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Update to new version of Oracle conversion utility, version 1.8.

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Gilles DAROLD
This commit is contained in:
Bruce Momjian 2002-04-04 05:55:57 +00:00
parent 958a1c2a0e
commit d61c7886e8
6 changed files with 1216 additions and 622 deletions
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24
contrib/oracle/CHANGES
View File

@ -24,4 +24,28 @@
- Fix incorrect type translation and many other bug fix
- Add schema only extraction by option schema => 'MYSCHEM'
2001 06 27 - Version 1.4
- Add online Oracle data extraction and insertion into PG database.
- Data export as insert statement (type => DATA)
- Data export as copy from stdin statement (type => COPY)
2001 12 28 - Version 1.5
- Fix LongReadLen problem when exporting Oracle data on LONG and LOB types
Thanks to Stephane Schildknecht for reporting and testing the fix.
- Add more precision on NUMBER type conversion
- Add conversion of type LONG, LOB, FILE
- Fix a problem when extracting data, sometime table could need to be prefixed
by the schema name.
- Fix output of Oracle data extraction. It now require a call to the function
export_data().
2002 01 07 - Version 1.6
- Fix problem exporting NULL value. Thanks to Stephane Schildknecht.
2002 02 14 - Version 1.7
- Remove export of OUTLINE object type. Thanks to Jean-Paul ARGUDO.
2002 03 05 - Version 1.8
- Add Oracle type FLOAT conversion to float8.
- Add column alias extraction on view. Thanks to Jean-Francois RIPOUTEAU
- Add PACKAGE extraction (type => DATA).

679
contrib/oracle/Ora2Pg.pm
View File

@ -13,13 +13,13 @@ package Ora2Pg;
# the same terms as Perl itself.
#------------------------------------------------------------------------------
use strict;
use vars qw($VERSION);
#use strict;
use vars qw($VERSION $PSQL);
use Carp qw(confess);
use DBI;
$VERSION = "1.2";
$VERSION = "1.8";
$PSQL = "psql";
=head1 NAME
@ -46,6 +46,11 @@ Ora2Pg - Oracle to PostgreSQL database schema converter
datasource => $dbsrc, # Database DBD datasource
user => $dbuser, # Database user
password => $dbpwd, # Database password
{
PrintError => 0,
RaiseError => 1,
AutoCommit => 0
}
);
# Create the POSTGRESQL representation of all objects in the database
@ -88,42 +93,83 @@ or if you only want to extract tables 10 to 20:
max => 20 # End extraction at indice 20
);
To choose a particular schema just set the following option to your schema name :
To choose a particular Oracle schema to export just set the following option
to your schema name:
schema => 'APPS'
To know at which indices table can be found during extraction use the option:
This schema definition can also be needed when you want to export data. If export
failed and complain that the table doesn't exists use this to prefix the table name
by the schema name.
To know at which indices tables can be found during extraction use the option:
showtableid => 1
To extract all views set the option type as follow:
To extract all views set the type option as follow:
type => 'VIEW'
To extract all grants set the option type as follow:
To extract all grants set the type option as follow:
type => 'GRANT'
To extract all sequences set the option type as follow:
To extract all sequences set the type option as follow:
type => 'SEQUENCE'
To extract all triggers set the option type as follow:
To extract all triggers set the type option as follow:
type => 'TRIGGER'
To extract all functions set the option type as follow:
To extract all functions set the type option as follow:
type => 'FUNCTION'
To extract all procedures set the option type as follow:
To extract all procedures set the type option as follow:
type => 'PROCEDURE'
Default is table schema extraction
To extract all packages and body set the type option as follow:
type => 'PACKAGE'
Default is table extraction
type => 'TABLE'
To extract all data from table extraction as INSERT statement use:
type => 'DATA'
To extract all data from table extraction as COPY statement use:
type => 'COPY'
and data_limit => n to specify the max tuples to return. If you set
this options to 0 or nothing, no limitation are used. Additional option
'table', 'min' and 'max' can also be used.
When use of COPY or DATA you can export data by calling method:
$schema->export_data("output.sql");
Data are dumped to the given filename or to STDOUT with no argument.
You can also send these data directly to a PostgreSQL backend using
the following method:
$schema->send_to_pgdb($destdatasrc,$destuser,$destpasswd);
In this case you must call export_data() without argument after the
call to method send_to_pgdb().
If you set type to COPY and you want to dump data directly to a PG database,
you must call method send_to_pgdb but data will not be sent via DBD::Pg but
they will be load to the database using the psql command. Calling this method
is istill required to be able to extract database name, hostname and port
information. Edit the $PSQL variable to match the path of your psql
command (nothing to edit if psql is in your path).
=head1 DESCRIPTION
@ -141,6 +187,9 @@ It currently dump the database schema (tables, views, sequences, indexes, grants
with primary, unique and foreign keys into PostgreSQL syntax without editing the
SQL code generated.
It now can dump Oracle data into PostgreSQL DB as online process. You can choose
what columns can be exported for each table.
Functions, procedures and triggers PL/SQL code generated must be reviewed to match
the PostgreSQL syntax. Some usefull recommandation on porting Oracle to PostgreSQL
can be found at http://techdocs.postgresql.org/ under the "Converting from other
@ -161,9 +210,9 @@ Features must include:
with unique, primary and foreign key.
- Grants/privileges export by user and group.
- Table selection (by name and max table) export.
- Predefined functions/triggers/procedures export.
- Predefined functions/triggers/procedures/packages export.
- Data export.
- Sql query converter (todo)
- Data export (todo)
My knowledge regarding database is really poor especially for Oracle
so contribution is welcome.
@ -171,7 +220,7 @@ so contribution is welcome.
=head1 REQUIREMENT
You just need the DBI and DBD::Oracle perl module to be installed
You just need the DBI, DBD::Pg and DBD::Oracle perl module to be installed
@ -187,12 +236,14 @@ Supported options are:
- user : DBD user (optional with public access)
- password : DBD password (optional with public access)
- schema : Oracle internal schema to extract
- type : Type of data to extract, can be TABLE,VIEW,GRANT,SEQUENCE,TRIGGER,FUNCTION,PROCEDURE
- type : Type of data to extract, can be TABLE,VIEW,GRANT,SEQUENCE,
TRIGGER,FUNCTION,PROCEDURE,DATA,COPY,PACKAGE
- debug : Print the current state of the parsing
- tables : Extract only the given tables (arrayref)
- showtableid : Display only the table indice during extraction
- min : Indice to begin extraction. Default to 0
- max : Indice to end extraction. Default to 0 mean no limits
- data_limit : Number max of tuples to return during data extraction (default 10)
Attempt that this list should grow a little more because all initialization is
done by this way.
@ -215,10 +266,26 @@ sub new
}
=head2 export_data FILENAME
Print SQL data output to a filename or
to STDOUT if no file is given.
Must be used only if type option is set to DATA or COPY
=cut
sub export_data
{
my ($self, $outfile) = @_;
$self->_get_sql_data($outfile);
}
=head2 export_sql FILENAME
Print SQL conversion output to a filename or
to STDOUT if no file is given.
simply return these data if no file is given.
=cut
@ -233,13 +300,66 @@ sub export_schema
close FILE;
return;
}
# Return data as string
return $self->_get_sql_data();
}
#### Private subroutines
=head2 send_to_pgdb DEST_DATASRC DEST_USER DEST_PASSWD
Open a DB handle to a PostgreSQL database
=cut
sub send_to_pgdb
{
my ($self, $destsrc, $destuser, $destpasswd) = @_;
# Connect the database
$self->{dbhdest} = DBI->connect($destsrc, $destuser, $destpasswd);
$destsrc =~ /dbname=([^;]*)/;
$self->{dbname} = $1;
$destsrc =~ /host=([^;]*)/;
$self->{dbhost} = $1;
$self->{dbhost} = 'localhost' if (!$self->{dbhost});
$destsrc =~ /port=([^;]*)/;
$self->{dbport} = $1;
$self->{dbport} = 5432 if (!$self->{dbport});
$self->{dbuser} = $destuser;
# Check for connection failure
if (!$self->{dbhdest}) {
die "Error : $DBI::err ... $DBI::errstr\n";
}
}
=head2 modify_struct TABLE_NAME ARRAYOF_FIELDNAME
Modify a table structure during export. Only given fieldname
will be exported.
=cut
sub modify_struct
{
my ($self, $table, @fields) = @_;
map { $_ = lc($_) } @fields;
$table = lc($table);
push(@{$self->{modify}{$table}}, @fields);
}
#### Private subroutines ####
=head1 PRIVATE METHODS
@ -262,6 +382,11 @@ sub _init
die "Error : $DBI::err ... $DBI::errstr\n";
}
# Save the DB connection
$self->{datasource} = $options{datasource};
$self->{user} = $options{user};
$self->{password} = $options{password};
$self->{debug} = 0;
$self->{debug} = 1 if ($options{debug});
@ -281,10 +406,14 @@ sub _init
$self->{showtableid} = $options{showtableid} if ($options{showtableid});
$self->{dbh}->{LongReadLen} = 0;
#$self->{dbh}->{LongTrunkOk} = 1;
#$self->{dbh}->{LongTruncOk} = 1;
$self->{data_limit} = 10;
$self->{data_current} = 0;
$self->{data_limit} = $options{data_limit} if (exists $options{data_limit});
# Retreive all table informations
if (!exists $options{type} || ($options{type} eq 'TABLE')) {
if (!exists $options{type} || ($options{type} eq 'TABLE') || ($options{type} eq 'DATA') || ($options{type} eq 'COPY')) {
$self->_tables();
} elsif ($options{type} eq 'VIEW') {
$self->{dbh}->{LongReadLen} = 100000;
@ -299,8 +428,11 @@ sub _init
} elsif (($options{type} eq 'FUNCTION') || ($options{type} eq 'PROCEDURE')) {
$self->{dbh}->{LongReadLen} = 100000;
$self->_functions($options{type});
} elsif ($options{type} eq 'PACKAGE') {
$self->{dbh}->{LongReadLen} = 100000;
$self->_packages();
} else {
die "type option must be TABLE, VIEW, GRANT, SEQUENCE, TRIGGER, FUNCTION or PROCEDURE\n";
die "type option must be TABLE, VIEW, GRANT, SEQUENCE, TRIGGER, PACKAGE, FUNCTION or PROCEDURE\n";
}
$self->{type} = $options{type};
@ -393,6 +525,24 @@ print STDERR "Retrieving functions information...\n" if ($self->{debug});
}
=head2 _packages
This function is used to retrieve all packages information.
Set the main hash $self->{packages}.
=cut
sub _packages
{
my ($self) = @_;
print STDERR "Retrieving packages information...\n" if ($self->{debug});
$self->{packages} = $self->_get_packages();
}
=head2 _tables
This function is used to retrieve all table information.
@ -451,7 +601,7 @@ print STDERR "Max table dump set to $self->{max}.\n" if ($self->{debug} && $self
foreach my $t (@$table) {
# Jump to desired extraction
if (grep(/^${@$t}[2]$/, @done)) {
print STDERR "SSSSSS duplicate ${@$t}[0] - ${@$t}[1] - ${@$t}[2]\n";
print STDERR "Duplicate entry found: ${@$t}[0] - ${@$t}[1] - ${@$t}[2]\n";
} else {
push(@done, ${@$t}[2]);
}
@ -540,6 +690,8 @@ print STDERR "Max view dump set to $self->{max}.\n" if ($self->{debug} && $self-
print STDERR "[$i] " if ($self->{max} || $self->{min});
print STDERR "Scanning $table...\n" if ($self->{debug});
$self->{views}{$table}{text} = $view_infos{$table};
## Added JFR : 3/3/02 : Retrieve also aliases from views
$self->{views}{$table}{alias}= $view_infos{$table}{alias};
$i++;
}
@ -554,7 +706,7 @@ Returns a string containing the entire SQL Schema definition compatible with Pos
sub _get_sql_data
{
my ($self) = @_;
my ($self, $outfile) = @_;
my $sql_header = "-- Generated by Ora2Pg, the Oracle database Schema converter, version $VERSION\n";
$sql_header .= "-- Copyright 2000 Gilles DAROLD. All rights reserved.\n";
@ -569,7 +721,21 @@ sub _get_sql_data
if ($self->{type} eq 'VIEW') {
print STDERR "Add views definition...\n" if ($self->{debug});
foreach my $view (sort keys %{$self->{views}}) {
$sql_output .= "CREATE VIEW \"\L$view\E\" AS $self->{views}{$view}{text};\n";
if (!@{$self->{views}{$view}{alias}}) {
$sql_output .= "CREATE VIEW \"\L$view\E\" AS $self->{views}{$view}{text};\n";
} else {
$sql_output .= "CREATE VIEW \"\L$view\E\" (";
my $count = 0;
foreach my $d (@{$self->{views}{$view}{alias}}) {
if ($count == 0) {
$count = 1;
} else {
$sql_output .= ", "
}
$sql_output .= "$d->[0]";
}
$sql_output .= ") AS $self->{views}{$view}{text};\n";
}
}
if (!$sql_output) {
@ -578,7 +744,7 @@ print STDERR "Add views definition...\n" if ($self->{debug});
$sql_output .= "\n";
}
return $sql_header . $sql_output . "\nEND TRANSACTION";
return $sql_header . $sql_output . "\nEND TRANSACTION;\n";
}
# Process grant only
@ -629,7 +795,7 @@ print STDERR "Add groups/users privileges...\n" if ($self->{debug});
$sql_output .= "\n" . $grants . "\n";
return $sql_header . $sql_output . "\nEND TRANSACTION";
return $sql_header . $sql_output . "\nEND TRANSACTION;\n";
}
# Process sequences only
@ -653,7 +819,7 @@ print STDERR "Add sequences definition...\n" if ($self->{debug});
$sql_output = "-- Nothing found of type $self->{type}\n";
}
return $sql_header . $sql_output . "\nEND TRANSACTION";
return $sql_header . $sql_output . "\nEND TRANSACTION;\n";
}
# Process triggers only. PL/SQL code is pre-converted to PL/PGSQL following
@ -697,7 +863,7 @@ print STDERR "Add triggers definition...\n" if ($self->{debug});
$sql_output = "-- Nothing found of type $self->{type}\n";
}
return $sql_header . $sql_output . "\nEND TRANSACTION";
return $sql_header . $sql_output . "\nEND TRANSACTION;\n";
}
# Process functions only
@ -727,9 +893,248 @@ print STDERR "Add functions definition...\n" if ($self->{debug});
$sql_output = "-- Nothing found of type $self->{type}\n";
}
return $sql_header . $sql_output . "\nEND TRANSACTION";
return $sql_header . $sql_output . "\nEND TRANSACTION;\n";
}
# Process functions only
if ($self->{type} eq 'PACKAGE') {
print STDERR "Add packages definition...\n" if ($self->{debug});
foreach my $pkg (sort keys %{$self->{packages}}) {
$sql_output .= "-- Oracle package '$pkg' declaration, please edit to match PostgreSQL syntax.\n";
$sql_output .= "$self->{packages}{$pkg}\n";
$sql_output .= "-- End of Oracle package '$pkg' declaration\n\n";
}
if (!$sql_output) {
$sql_output = "-- Nothing found of type $self->{type}\n";
}
return $sql_header . $sql_output . "\nEND TRANSACTION;\n";
}
# Extract data only
if (($self->{type} eq 'DATA') || ($self->{type} eq 'COPY')) {
# Connect the database
$self->{dbh} = DBI->connect($self->{datasource}, $self->{user}, $self->{password});
# Check for connection failure
if (!$self->{dbh}) {
die "Error : $DBI::err ... $DBI::errstr\n";
}
if (!$self->{dbhdest}) {
if ($outfile) {
open(FILE,">$outfile") or die "Can't open $outfile: $!";
print FILE $sql_header;
} else {
print $sql_header;
}
} else {
if ($self->{type} eq 'COPY') {
open(DBH, "| $PSQL -h $self->{dbhost} -p $self->{dbport} -d $self->{dbname}") or die "Can't open $PSQL command, $!\n";
}
}
foreach my $table (keys %{$self->{tables}}) {
print STDERR "Dumping table $table...\n" if ($self->{debug});
my @tt = ();
my @nn = ();
my $s_out = "INSERT INTO \"\L$table\E\" (";
if ($self->{type} eq 'COPY') {
$s_out = "COPY \"\L$table\E\" FROM stdin;\n";
}
foreach my $i ( 0 .. $#{$self->{tables}{$table}{field_name}} ) {
my $fieldname = ${$self->{tables}{$table}{field_name}}[$i];
if (exists $self->{modify}{"\L$table\E"}) {
next if (!grep(/\L$fieldname\E/, @{$self->{modify}{"\L$table\E"}}));
}
foreach my $f (@{$self->{tables}{$table}{column_info}}) {
next if (${$f}[0] ne "$fieldname");
my $type = $self->_sql_type(${$f}[1], ${$f}[2], ${$f}[5], ${$f}[6]);
$type = "${$f}[1], ${$f}[2]" if (!$type);
push(@tt, $type);
push(@nn, ${$f}[0]);
if ($self->{type} ne 'COPY') {
$s_out .= "\"\L${$f}[0]\E\",";
}
last;
}
}
if ($self->{type} ne 'COPY') {
$s_out =~ s/,$//;
$s_out .= ") VALUES (";
}
# Extract all data from the current table
$self->{data_current} = 0;
$self->{data_end} = 0;
while ( !$self->{data_end} ) {
my $sth = $self->_get_data($table, \@nn, \@tt);
$self->{data_end} = 1 if (!$self->{data_limit});
my $count = 0;
my $sql = '';
if ($self->{type} eq 'COPY') {
if ($self->{dbhdest}) {
$sql = $s_out;
} else {
if ($outfile) {
print FILE $s_out;
} else {
print $s_out;
}
}
}
while (my $row = $sth->fetch) {
if ($self->{type} ne 'COPY') {
if ($self->{dbhdest}) {
$sql .= $s_out;
} else {
if ($outfile) {
print FILE $s_out;
} else {
print $s_out;
}
}
}
for (my $i = 0; $i <= $#{$row}; $i++) {
if ($self->{type} ne 'COPY') {
if ($tt[$i] =~ /(char|date|time|text)/) {
$row->[$i] =~ s/'/''/gs;
if ($row->[$i]) {
$row->[$i] = "'$row->[$i]'";
} else {
$row->[$i] = 'NULL';
}
if ($self->{dbhdest}) {
$sql .= $row->[$i];
} else {
if ($outfile) {
print FILE $row->[$i];
} else {
print $row->[$i];
}
}
} else {
if (!$row->[$i]) {
$row->[$i] = 'NULL';
}
if ($self->{dbhdest}) {
$sql .= $row->[$i];
} else {
if ($outfile) {
print FILE $row->[$i];
} else {
print $row->[$i];
}
}
}
if ($i < $#{$row}) {
if ($self->{dbhdest}) {
$sql .= ",";
} else {
if ($outfile) {
print FILE ",";
} else {
print ",";
}
}
}
} else {
if (!$row->[$i]) {
$row->[$i] = '\N';
}
if ($self->{dbhdest}) {
$sql .= $row->[$i];
} else {
if ($outfile) {
print FILE $row->[$i];
} else {
print $row->[$i];
}
}
if ($i < $#{$row}) {
if ($self->{dbhdest}) {
$sql .= "\t";
} else {
if ($outfile) {
print FILE "\t";
} else {
print "\t";
}
}
} else {
if ($self->{dbhdest}) {
$sql .= "\n";
} else {
if ($outfile) {
print FILE "\n";
} else {
print "\n";
}
}
}
}
}
if ($self->{type} ne 'COPY') {
if ($self->{dbhdest}) {
$sql .= ");\n";
} else {
if ($outfile) {
print FILE ");\n";
} else {
print ");\n";
}
}
}
$count++;
}
if ($self->{type} eq 'COPY') {
if ($self->{dbhdest}) {
$sql .= "\\.\n";
} else {
if ($outfile) {
print FILE "\\.\n";
} else {
print "\\.\n";
}
}
}
if ($self->{data_limit}) {
$self->{data_end} = 1 if ($count+1 < $self->{data_limit});
}
# Insert data if we are in online processing mode
if ($self->{dbhdest}) {
if ($self->{type} ne 'COPY') {
my $s = $self->{dbhdest}->prepare($sql) or die $self->{dbhdest}->errstr . "\n";
$s->execute or die $s->errstr . "\n";
} else {
print DBH "$sql";
}
}
}
}
# Disconnect from the database
$self->{dbh}->disconnect() if ($self->{dbh});
if (!$self->{dbhdest}) {
if ($outfile) {
print FILE "\nEND TRANSACTION;\n";
} else {
print "\nEND TRANSACTION;\n";
}
}
$self->{dbhdest}->disconnect() if ($self->{dbhdest});
if ($self->{type} eq 'COPY') {
close DBH;
}
return;
}
# Dump the database structure
@ -741,7 +1146,7 @@ print STDERR "Dumping table $table...\n" if ($self->{debug});
foreach my $i ( 0 .. $#{$self->{tables}{$table}{field_name}} ) {
foreach my $f (@{$self->{tables}{$table}{column_info}}) {
next if (${$f}[0] ne "${$self->{tables}{$table}{field_name}}[$i]");
my $type = $self->_sql_type(${$f}[1], ${$f}[2]);
my $type = $self->_sql_type(${$f}[1], ${$f}[2], ${$f}[5], ${$f}[6]);
$type = "${$f}[1], ${$f}[2]" if (!$type);
$sql_output .= "\t\"\L${$f}[0]\E\" $type";
# Set the primary key definition
@ -803,11 +1208,63 @@ print STDERR "Dumping table $table...\n" if ($self->{debug});
$sql_output = "-- Nothing found of type TABLE\n";
}
return $sql_header . $sql_output . "\nEND TRANSACTION";
return $sql_header . $sql_output . "\nEND TRANSACTION;\n";
}
=head2 _sql_type INTERNAL_TYPE LENGTH
=head2 _get_data TABLE
This function implements a Oracle-native data extraction.
Return a list of array reference containing the data
=cut
sub _get_data
{
my ($self, $table, $name, $type) = @_;
my $str = "SELECT ";
my $tmp = "SELECT ";
for my $k (0 .. $#{$name}) {
if ( $type->[$k] =~ /(date|time)/) {
$str .= "to_char($name->[$k], 'YYYY-MM-DD'),";
} else {
$str .= "$name->[$k],";
}
$tmp .= "$name->[$k],";
}
$str =~ s/,$//;
$tmp =~ s/,$//;
my $tmp2 = $tmp;
$tmp2 =~ s/SELECT /SELECT ROWNUM as noline,/;
# Fix a problem when the table need to be prefixed by the schema
if ($self->{schema}) {
$table = "$self->{schema}.$table";
}
if ($self->{data_limit}) {
$str = $tmp . " FROM ( $tmp2 FROM ( $tmp FROM $table) ";
$str .= " WHERE ROWNUM < ($self->{data_limit} + $self->{data_current})) ";
$str .= " WHERE noline >= $self->{data_current}";
} else {
$str .= " FROM $table";
}
$self->{data_current} += $self->{data_limit};
# Fix a problem when exporting type LONG and LOB
$self->{dbh}->{'LongReadLen'} = 1023*1024;
$self->{dbh}->{'LongTruncOk'} = 1;
my $sth = $self->{dbh}->prepare($str) or die $sth->errstr . "\n";
$sth->execute or die $sth->errstr . "\n";
return $sth;
}
=head2 _sql_type INTERNAL_TYPE LENGTH PRECISION SCALE
This function return the PostgreSQL datatype corresponding to the
Oracle internal type.
@ -816,32 +1273,70 @@ Oracle internal type.
sub _sql_type
{
my ($self, $type, $len) = @_;
my ($self, $type, $len, $precision, $scale) = @_;
my %TYPE = (
# Oracle only has one flexible underlying numeric type, NUMBER.
# Without precision and scale it is set to PG type float8 to match all needs
'NUMBER' => 'float8',
'LONG' => 'integer',
# CHAR types limit of 2000 bytes with default to 1 if no length is given.
# PG char type has max length set to 8104 so it should match all needs
'CHAR' => 'char',
'NCHAR' => 'char',
# VARCHAR types the limit is 2000 bytes in Oracle 7 and 4000 in Oracle 8.
# PG varchar type has max length iset to 8104 so it should match all needs
'VARCHAR' => 'varchar',
'NVARCHAR' => 'varchar',
'VARCHAR2' => 'varchar',
'NVARCHAR2' => 'varchar',
# The DATE data type is used to store the date and time information.
# Pg type datetime should match all needs
'DATE' => 'datetime',
# Type LONG is like VARCHAR2 but with up to 2Gb.
# PG type text should match all needs or if you want you could use blob
'LONG' => 'text', # Character data of variable length
'LONG RAW' => 'text', # Raw binary data of variable length
# Types LOB and FILE are like LONG but with up to 4Gb.
# PG type text should match all needs or if you want you could use blob (large object)
'CLOB' => 'text', # A large object containing single-byte characters
'NLOB' => 'text', # A large object containing national character set data
'BLOB' => 'text', # Binary large object
'BFILE' => 'text', # Locator for external large binary file
# The RAW type is presented as hexadecimal characters. The contents are treated as binary data. Limit of 2000 bytes
# Pg type text should match all needs or if you want you could use blob (large object)
'RAW' => 'text',
'ROWID' => 'oid',
'LONG RAW' => 'binary',
'FLOAT' => 'float8'
);
# Overide the length
$len = '' if ($type eq 'NUMBER');
$len = $precision if ( ($type eq 'NUMBER') && $precision );
if (exists $TYPE{$type}) {
if ($len) {
if (($type eq "NUMBER") || ($type eq "LONG")) {
return "$TYPE{$type}($len)";
} elsif (($type eq "CHAR") || ($type =~ /VARCHAR/)) {
if ( ($type eq "CHAR") || ($type =~ /VARCHAR/) ) {
# Type CHAR have default length set to 1
# Type VARCHAR(2) must have a given length
$len = 1 if (!$len && ($type eq "CHAR"));
return "$TYPE{$type}($len)";
} elsif ($type eq "NUMBER") {
# This is an integer
if (!$scale) {
if ($precision) {
return "numeric($precision)";
}
} else {
if ($precision) {
return "decimal($precision,$scale)";
}
}
return "$TYPE{$type}";
} else {
return "$TYPE{$type}";
}
} else {
return $TYPE{$type};
}
}
@ -872,7 +1367,7 @@ sub _column_info
my ($self, $table) = @_;
my $sth = $self->{dbh}->prepare(<<END) or die $self->{dbh}->errstr;
SELECT COLUMN_NAME, DATA_TYPE, DATA_LENGTH, NULLABLE, DATA_DEFAULT
SELECT COLUMN_NAME, DATA_TYPE, DATA_LENGTH, NULLABLE, DATA_DEFAULT, DATA_PRECISION, DATA_SCALE
FROM DBA_TAB_COLUMNS
WHERE TABLE_NAME='$table'
END
@ -880,7 +1375,7 @@ END
my $data = $sth->fetchall_arrayref();
if ($self->{debug}) {
foreach my $d (@$data) {
print STDERR "\t$d->[0] => type:$d->[1] , length:$d->[2] , nullable:$d->[3] , default:$d->[4]\n";
print STDERR "\t$d->[0] => type:$d->[1] , length:$d->[2], precision:$d->[5], scale:$d->[6], nullable:$d->[3] , default:$d->[4]\n";
}
}
@ -1033,7 +1528,7 @@ sub _get_users
# Retrieve all USERS defined in this database
my $str = "SELECT USERNAME FROM DBA_USERS";
if (!$self->{schema}) {
$str .= " WHERE USERNAME <> 'SYS' AND USERNAME <> 'SYSTEM' AND USERNAME <> 'DBSNMP'";
$str .= " WHERE USERNAME <> 'SYS' AND USERNAME <> 'SYSTEM' AND USERNAME <> 'DBSNMP' AND USERNAME <> 'OUTLN'";
} else {
$str .= " WHERE USERNAME = '$self->{schema}'";
}
@ -1067,7 +1562,7 @@ sub _get_roles
# Retrieve all ROLES defined in this database
my $str = "SELECT GRANTED_ROLE,GRANTEE FROM DBA_ROLE_PRIVS WHERE GRANTEE NOT IN (select distinct role from dba_roles)";
if (!$self->{schema}) {
$str .= " AND GRANTEE <> 'SYS' AND GRANTEE <> 'SYSTEM' AND GRANTEE <> 'DBSNMP'";
$str .= " AND GRANTEE <> 'SYS' AND GRANTEE <> 'SYSTEM' AND GRANTEE <> 'DBSNMP' AND GRANTEE <> 'OUTLN'";
} else {
$str .= " AND GRANTEE = '$self->{schema}'";
}
@ -1103,7 +1598,7 @@ sub _get_all_grants
if ($self->{schema}) {
$str .= " WHERE GRANTEE = '$self->{schema}'";
} else {
$str .= " WHERE GRANTEE <> 'SYS' AND GRANTEE <> 'SYSTEM' AND GRANTEE <> 'DBSNMP'";
$str .= " WHERE GRANTEE <> 'SYS' AND GRANTEE <> 'SYSTEM' AND GRANTEE <> 'DBSNMP' AND GRANTEE <> 'OUTLN'";
}
$str .= " ORDER BY TABLE_NAME";
@ -1167,7 +1662,7 @@ sub _get_sequences
# Retrieve all indexes
my $str = "SELECT DISTINCT SEQUENCE_NAME, MIN_VALUE, MAX_VALUE, INCREMENT_BY, LAST_NUMBER, CACHE_SIZE, CYCLE_FLAG FROM DBA_SEQUENCES";
if (!$self->{schema}) {
$str .= " WHERE SEQUENCE_OWNER <> 'SYS' AND SEQUENCE_OWNER <> 'SYSTEM' AND SEQUENCE_OWNER <> 'DBSNMP'";
$str .= " WHERE SEQUENCE_OWNER <> 'SYS' AND SEQUENCE_OWNER <> 'SYSTEM' AND SEQUENCE_OWNER <> 'DBSNMP' AND SEQUENCE_OWNER <> 'OUTLN'";
} else {
$str .= " WHERE SEQUENCE_OWNER = '$self->{schema}'";
}
@ -1198,7 +1693,7 @@ sub _get_views
# Retrieve all views
my $str = "SELECT VIEW_NAME,TEXT FROM DBA_VIEWS";
if (!$self->{schema}) {
$str .= " WHERE OWNER <> 'SYS' AND OWNER <> 'SYSTEM' AND OWNER <> 'DBSNMP'";
$str .= " WHERE OWNER <> 'SYS' AND OWNER <> 'SYSTEM' AND OWNER <> 'DBSNMP' AND OWNER <> 'OUTLN'";
} else {
$str .= " WHERE OWNER = '$self->{schema}'";
}
@ -1208,11 +1703,46 @@ sub _get_views
my %data = ();
while (my $row = $sth->fetch) {
$data{$row->[0]} = $row->[1];
@{$data{$row->[0]}{alias}} = $self->_alias_info ($row->[0]);
}
return %data;
}
=head2 _alias_info
This function implements a Oracle-native column information.
Return a list of array reference containing the following informations
for each alias of the given view
[(
column name,
column id
)]
=cut
sub _alias_info
{
my ($self, $view) = @_;
my $sth = $self->{dbh}->prepare(<<END) or die $self->{dbh}->errstr;
SELECT COLUMN_NAME, COLUMN_ID
FROM DBA_TAB_COLUMNS
WHERE TABLE_NAME='$view'
END
$sth->execute or die $sth->errstr;
my $data = $sth->fetchall_arrayref();
if ($self->{debug}) {
foreach my $d (@$data) {
print STDERR "\t$d->[0] => column id:$d->[1]\n";
}
}
return @$data;
}
=head2 _get_triggers
@ -1229,7 +1759,7 @@ sub _get_triggers
# Retrieve all indexes
my $str = "SELECT TRIGGER_NAME, TRIGGER_TYPE, TRIGGERING_EVENT, TABLE_NAME, TRIGGER_BODY FROM DBA_TRIGGERS WHERE STATUS='ENABLED'";
if (!$self->{schema}) {
$str .= " AND OWNER <> 'SYS' AND OWNER <> 'SYSTEM' AND OWNER <> 'DBSNMP'";
$str .= " AND OWNER <> 'SYS' AND OWNER <> 'SYSTEM' AND OWNER <> 'DBSNMP' AND OWNER <> 'OUTLN'";
} else {
$str .= " AND OWNER = '$self->{schema}'";
}
@ -1260,7 +1790,7 @@ sub _get_functions
# Retrieve all indexes
my $str = "SELECT DISTINCT OBJECT_NAME,OWNER FROM DBA_OBJECTS WHERE OBJECT_TYPE='$type' AND STATUS='VALID'";
if (!$self->{schema}) {
$str .= " AND OWNER <> 'SYS' AND OWNER <> 'SYSTEM' AND OWNER <> 'DBSNMP'";
$str .= " AND OWNER <> 'SYS' AND OWNER <> 'SYSTEM' AND OWNER <> 'DBSNMP' AND OWNER <> 'OUTLN'";
} else {
$str .= " AND OWNER = '$self->{schema}'";
}
@ -1284,6 +1814,48 @@ sub _get_functions
}
=head2 _get_packages
This function implements a Oracle-native packages information.
Return a hash of all function name with their PLSQL code
=cut
sub _get_packages
{
my ($self) = @_;
# Retrieve all indexes
my $str = "SELECT DISTINCT OBJECT_NAME,OWNER FROM DBA_OBJECTS WHERE OBJECT_TYPE='PACKAGE' AND STATUS='VALID'";
if (!$self->{schema}) {
$str .= " AND OWNER <> 'SYS' AND OWNER <> 'SYSTEM' AND OWNER <> 'DBSNMP' AND OWNER <> 'OUTLN'";
} else {
$str .= " AND OWNER = '$self->{schema}'";
}
my $sth = $self->{dbh}->prepare($str) or die $self->{dbh}->errstr;
$sth->execute or die $sth->errstr;
my %packages = ();
my @fct_done = ();
while (my $row = $sth->fetch) {
print STDERR "\tFound Package: $row->[0]\n" if ($self->{debug});
next if (grep(/^$row->[0]$/, @fct_done));
push(@fct_done, $row->[0]);
my $sql = "SELECT TEXT FROM DBA_SOURCE WHERE OWNER='$row->[1]' AND NAME='$row->[0]' ORDER BY LINE";
my $sth2 = $self->{dbh}->prepare($sql) or die $self->{dbh}->errstr;
$sth2->execute or die $sth2->errstr;
while (my $r = $sth2->fetch) {
$packages{"$row->[0]"} .= $r->[0];
}
}
return \%packages;
}
=head2 _table_info
This function retrieve all Oracle-native tables information.
@ -1311,7 +1883,7 @@ sub _table_info
if ($self->{schema}) {
$sql .= " and at.OWNER='$self->{schema}'";
} else {
$sql .= "and at.OWNER <> 'SYS' and at.OWNER <> 'SYSTEM' and at.OWNER <> 'DBSNMP'";
$sql .= "AND at.OWNER <> 'SYS' AND at.OWNER <> 'SYSTEM' AND at.OWNER <> 'DBSNMP' AND at.OWNER <> 'OUTLN'";
}
$sql .= " order by tc.TABLE_TYPE, at.OWNER, at.TABLE_NAME";
my $sth = $self->{dbh}->prepare( $sql ) or return undef;
@ -1328,6 +1900,7 @@ __END__
Gilles Darold <gilles@darold.net>
=head1 COPYRIGHT
Copyright (c) 2001 Gilles Darold - All rights reserved.
@ -1343,9 +1916,15 @@ it can move and not be compatible with older version so I will do my best
to give you official support for Ora2Pg. Your volontee to help construct
it and your contribution are welcome.
=head1 SEE ALSO
L<DBI>, L<DBD::Oracle>
L<DBI>, L<DBD::Oracle>, L<DBD::Pg>
=head1 ACKNOWLEDGEMENTS
Thanks to Jason Servetar who decided me to implement data extraction.
=cut

295
contrib/oracle/README.ora2pg
View File

@ -20,6 +20,11 @@ SYNOPSIS
datasource => $dbsrc, # Database DBD datasource
user => $dbuser, # Database user
password => $dbpwd, # Database password
{
PrintError => 0,
RaiseError => 1,
AutoCommit => 0
}
);
# Create the POSTGRESQL representation of all objects in the database
@ -62,74 +67,116 @@ SYNOPSIS
max => 20 # End extraction at indice 20
);
To choose a particular schema just set the following option to
your schema name :
To choose a particular Oracle schema to export just set the following
option to your schema name:
schema => 'APPS'
To know at which indices table can be found during extraction
use the option:
This schema definition can also be needed when you want to export data.
If export failed and complain that the table doesn't exists use this to
prefix the table name by the schema name.
To know at which indices tables can be found during extraction use the
option:
showtableid => 1
To extract all views set the option type as follow:
To extract all views set the type option as follow:
type => 'VIEW'
To extract all grants set the option type as follow:
To extract all grants set the type option as follow:
type => 'GRANT'
To extract all sequences set the option type as follow:
To extract all sequences set the type option as follow:
type => 'SEQUENCE'
To extract all triggers set the option type as follow:
To extract all triggers set the type option as follow:
type => 'TRIGGER'
To extract all functions set the option type as follow:
To extract all functions set the type option as follow:
type => 'FUNCTION'
To extract all procedures set the option type as follow:
To extract all procedures set the type option as follow:
type => 'PROCEDURE'
Default is table schema extraction
To extract all packages and body set the type option as follow:
type => 'PACKAGE'
Default is table extraction
type => 'TABLE'
To extract all data from table extraction as INSERT statement use:
type => 'DATA'
To extract all data from table extraction as COPY statement use:
type => 'COPY'
and data_limit => n to specify the max tuples to return. If you set this
options to 0 or nothing, no limitation are used. Additional option
'table', 'min' and 'max' can also be used.
When use of COPY or DATA you can export data by calling method:
$schema->export_data("output.sql");
Data are dumped to the given filename or to STDOUT with no argument. You
can also send these data directly to a PostgreSQL backend using the
following method:
$schema->send_to_pgdb($destdatasrc,$destuser,$destpasswd);
In this case you must call export_data() without argument after the call
to method send_to_pgdb().
If you set type to COPY and you want to dump data directly to a PG
database, you must call method send_to_pgdb but data will not be sent
via DBD::Pg but they will be load to the database using the psql
command. Calling this method is istill required to be able to extract
database name, hostname and port information. Edit the $PSQL variable to
match the path of your psql command (nothing to edit if psql is in your
path).
DESCRIPTION
Ora2Pg is a perl OO module used to export an Oracle database
schema to a PostgreSQL compatible schema.
Ora2Pg is a perl OO module used to export an Oracle database schema to a
PostgreSQL compatible schema.
It simply connect to your Oracle database, extract its structure
and generate a SQL script that you can load into your PostgreSQL
database.
It simply connect to your Oracle database, extract its structure and
generate a SQL script that you can load into your PostgreSQL database.
I'm not a Oracle DBA so I don't really know something about its
internal structure so you may find some incorrect things. Please
tell me what is wrong and what can be better.
I'm not a Oracle DBA so I don't really know something about its internal
structure so you may find some incorrect things. Please tell me what is
wrong and what can be better.
It currently dump the database schema (tables, views, sequences,
indexes, grants), with primary, unique and foreign keys into
PostgreSQL syntax without editing the SQL code generated.
indexes, grants), with primary, unique and foreign keys into PostgreSQL
syntax without editing the SQL code generated.
It now can dump Oracle data into PostgreSQL DB as online process. You
can choose what columns can be exported for each table.
Functions, procedures and triggers PL/SQL code generated must be
reviewed to match the PostgreSQL syntax. Some usefull
recommandation on porting Oracle to PostgreSQL can be found at
reviewed to match the PostgreSQL syntax. Some usefull recommandation on
porting Oracle to PostgreSQL can be found at
http://techdocs.postgresql.org/ under the "Converting from other
Databases to PostgreSQL" Oracle part. I just notice one thing
more is that the trunc() function in Oracle is the same for
number or date so be carefull when porting to PostgreSQL to use
trunc() for number and date_trunc() for date.
Databases to PostgreSQL" Oracle part. I just notice one thing more is
that the trunc() function in Oracle is the same for number or date so be
carefull when porting to PostgreSQL to use trunc() for number and
date_trunc() for date.
ABSTRACT
The goal of the Ora2Pg perl module is to cover all part needed
to export an Oracle database to a PostgreSQL database without
other thing that provide the connection parameters to the Oracle
database.
The goal of the Ora2Pg perl module is to cover all part needed to export
an Oracle database to a PostgreSQL database without other thing that
provide the connection parameters to the Oracle database.
Features must include:
@ -137,15 +184,15 @@ ABSTRACT
with unique, primary and foreign key.
- Grants/privileges export by user and group.
- Table selection (by name and max table) export.
- Predefined functions/triggers/procedures export.
- Predefined functions/triggers/procedures/packages export.
- Data export.
- Sql query converter (todo)
- Data export (todo)
My knowledge regarding database is really poor especially for
Oracle so contribution is welcome.
My knowledge regarding database is really poor especially for Oracle so
contribution is welcome.
REQUIREMENT
You just need the DBI and DBD::Oracle perl module to be
You just need the DBI, DBD::Pg and DBD::Oracle perl module to be
installed
PUBLIC METHODS
@ -159,36 +206,57 @@ PUBLIC METHODS
- user : DBD user (optional with public access)
- password : DBD password (optional with public access)
- schema : Oracle internal schema to extract
- type : Type of data to extract, can be TABLE,VIEW,GRANT,SEQUENCE,TRIGGER,FUNCTION,PROCEDURE
- type : Type of data to extract, can be TABLE,VIEW,GRANT,SEQUENCE,
TRIGGER,FUNCTION,PROCEDURE,DATA,COPY,PACKAGE
- debug : Print the current state of the parsing
- tables : Extract only the given tables (arrayref)
- showtableid : Display only the table indice during extraction
- min : Indice to begin extraction. Default to 0
- max : Indice to end extraction. Default to 0 mean no limits
- data_limit : Number max of tuples to return during data extraction (default 10)
Attempt that this list should grow a little more because all
initialization is done by this way.
export_data FILENAME
Print SQL data output to a filename or to STDOUT if no file is given.
Must be used only if type option is set to DATA or COPY =cut
sub export_data { my ($self, $outfile) = @_;
$self->_get_sql_data($outfile);
}
export_sql FILENAME
Print SQL conversion output to a filename or to STDOUT if no
file is given.
Print SQL conversion output to a filename or simply return these data if
no file is given.
send_to_pgdb DEST_DATASRC DEST_USER DEST_PASSWD
Open a DB handle to a PostgreSQL database
modify_struct TABLE_NAME ARRAYOF_FIELDNAME
Modify a table structure during export. Only given fieldname will be
exported.
PRIVATE METHODS
_init HASH_OPTIONS
Initialize a Ora2Pg object instance with a connexion to the
Oracle database.
Initialize a Ora2Pg object instance with a connexion to the Oracle
database.
_grants
This function is used to retrieve all privilege information.
It extract all Oracle's ROLES to convert them as Postgres groups
and search all users associated to these roles.
It extract all Oracle's ROLES to convert them as Postgres groups and
search all users associated to these roles.
Set the main hash $self->{groups}. Set the main hash $self-
>{grantss}.
Set the main hash $self->{groups}. Set the main hash $self->{grantss}.
_sequences
@ -208,29 +276,35 @@ PRIVATE METHODS
Set the main hash $self->{functions}.
_packages
This function is used to retrieve all packages information.
Set the main hash $self->{packages}.
_tables
This function is used to retrieve all table information.
Set the main hash of the database structure $self->{tables}.
Keys are the names of all tables retrieved from the current
database. Each table information compose an array associated to
the table_info key as array reference. In other way:
Set the main hash of the database structure $self->{tables}. Keys are
the names of all tables retrieved from the current database. Each table
information compose an array associated to the table_info key as array
reference. In other way:
$self->{tables}{$class_name}{table_info} = [(OWNER,TYPE)];
DBI TYPE can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY,
LOCAL TEMPORARY, ALIAS, SYNONYM or a data source specific type
identifier. This only extract TABLE type.
DBI TYPE can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY, LOCAL
TEMPORARY, ALIAS, SYNONYM or a data source specific type identifier.
This only extract TABLE type.
It also get the following informations in the DBI object to
affect the main hash of the database structure :
It also get the following informations in the DBI object to affect the
main hash of the database structure :
$self->{tables}{$class_name}{field_name} = $sth->{NAME};
$self->{tables}{$class_name}{field_type} = $sth->{TYPE};
It also call these other private subroutine to affect the main
hash of the database structure :
It also call these other private subroutine to affect the main hash of
the database structure :
@{$self->{tables}{$class_name}{column_info}} = $self->_column_info($class_name);
@{$self->{tables}{$class_name}{primary_key}} = $self->_primary_key($class_name);
@ -241,9 +315,9 @@ PRIVATE METHODS
This function is used to retrieve all views information.
Set the main hash of the views definition $self->{views}. Keys
are the names of all views retrieved from the current database
values are the text definition of the views.
Set the main hash of the views definition $self->{views}. Keys are the
names of all views retrieved from the current database values are the
text definition of the views.
It then set the main hash as follow:
@ -252,58 +326,62 @@ PRIVATE METHODS
_get_sql_data
Returns a string containing the entire SQL Schema definition
compatible with PostgreSQL
Returns a string containing the entire SQL Schema definition compatible
with PostgreSQL
_sql_type INTERNAL_TYPE LENGTH
_get_data TABLE
This function return the PostgreSQL datatype corresponding to
the Oracle internal type.
This function implements a Oracle-native data extraction.
Return a list of array reference containing the data
_sql_type INTERNAL_TYPE LENGTH PRECISION SCALE
This function return the PostgreSQL datatype corresponding to the Oracle
internal type.
_column_info TABLE
This function implements a Oracle-native column information.
Return a list of array reference containing the following
informations for each column the given a table
Return a list of array reference containing the following informations
for each column the given a table
[( column name, column type, column length, nullable column,
default value )]
[( column name, column type, column length, nullable column, default
value )]
_primary_key TABLE
This function implements a Oracle-native primary key column
information.
This function implements a Oracle-native primary key column information.
Return a list of all column name defined as primary key for the
given table.
Return a list of all column name defined as primary key for the given
table.
_unique_key TABLE
This function implements a Oracle-native unique key column
information.
This function implements a Oracle-native unique key column information.
Return a list of all column name defined as unique key for the
given table.
Return a list of all column name defined as unique key for the given
table.
_foreign_key TABLE
This function implements a Oracle-native foreign key reference
information.
Return a list of hash of hash of array reference. Ouuf! Nothing
very difficult. The first hash is composed of all foreign key
name. The second hash just have two key known as 'local' and
remote' corresponding to the local table where the foreign key
is defined and the remote table where the key refer.
Return a list of hash of hash of array reference. Ouuf! Nothing very
difficult. The first hash is composed of all foreign key name. The
second hash just have two key known as 'local' and remote' corresponding
to the local table where the foreign key is defined and the remote table
where the key refer.
The foreign key name is composed as follow:
'local_table_name->remote_table_name'
Foreign key data consist in two array representing at the same
indice the local field and the remote field where the first one
refer to the second. Just like this:
Foreign key data consist in two array representing at the same indice
the local field and the remote field where the first one refer to the
second. Just like this:
@{$link{$fkey_name}{local}} = @local_columns;
@{$link{$fkey_name}{remote}} = @remote_columns;
@ -318,31 +396,27 @@ PRIVATE METHODS
This function implements a Oracle-native roles information.
Return a hash of all groups (roles) as an array of associated
users.
Return a hash of all groups (roles) as an array of associated users.
_get_all_grants
This function implements a Oracle-native user privilege
information.
This function implements a Oracle-native user privilege information.
Return a hash of all tables grants as an array of associated
users.
Return a hash of all tables grants as an array of associated users.
_get_indexes TABLE
This function implements a Oracle-native indexes information.
Return hash of array containing all unique index and a hash of
array of all indexes name which are not primary keys for the
given table.
Return hash of array containing all unique index and a hash of array of
all indexes name which are not primary keys for the given table.
_get_sequences
This function implements a Oracle-native sequences information.
Return a hash of array of sequence name with MIN_VALUE,
MAX_VALUE, INCREMENT and LAST_NUMBER for the given table.
Return a hash of array of sequence name with MIN_VALUE, MAX_VALUE,
INCREMENT and LAST_NUMBER for the given table.
_get_views
@ -350,6 +424,15 @@ PRIVATE METHODS
Return a hash of view name with the SQL query it is based on.
_alias_info
This function implements a Oracle-native column information.
Return a list of array reference containing the following informations
for each alias of the given view
[( column name, column id )]
_get_triggers
This function implements a Oracle-native triggers information.
@ -362,6 +445,12 @@ PRIVATE METHODS
Return a hash of all function name with their PLSQL code
_get_packages
This function implements a Oracle-native packages information.
Return a hash of all function name with their PLSQL code
_table_info
This function retrieve all Oracle-native tables information.
@ -374,16 +463,18 @@ AUTHOR
COPYRIGHT
Copyright (c) 2001 Gilles Darold - All rights reserved.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
BUGS
This perl module is in the same state as my knowledge regarding
database, it can move and not be compatible with older version
so I will do my best to give you official support for Ora2Pg.
Your volontee to help construct it and your contribution are
welcome.
database, it can move and not be compatible with older version so I will
do my best to give you official support for Ora2Pg. Your volontee to
help construct it and your contribution are welcome.
SEE ALSO
the DBI manpage, the DBD::Oracle manpage
the DBI manpage, the DBD::Oracle manpage, the DBD::Pg manpage
ACKNOWLEDGEMENTS
Thanks to Jason Servetar who decided me to implement data extraction.

9
contrib/oracle/TODO
View File

@ -1,13 +1,10 @@
Here are some more thing to do :
Add possible call to perl function for each field value exported
(data conversion on the fly before dump)
- More precision in type conversion based on length
(I've no good DB to do that)
This will be done as soon as possible
- Fix problem regarding table/constraint output order.
The following need your help :
- Extracting/converting datas.
- SQL queries converter.
- PL/SQL code converter.

806
contrib/oracle/ora2pg.html
View File

@ -1,107 +1,110 @@
<HTML>
<HEAD>
<TITLE>Ora2Pg - Oracle to PostgreSQL database schema converter</TITLE>
<LINK REV="made" HREF="mailto:root@porky.devel.redhat.com">
<LINK REV="made" HREF="mailto:darold@localhost.localdomain">
</HEAD>
<BODY>
<A NAME="__index__"></A>
<!-- INDEX BEGIN -->
<UL>
<LI><A HREF="#NAME">NAME</A>
<LI><A HREF="#SYNOPSIS">SYNOPSIS</A>
<LI><A HREF="#DESCRIPTION">DESCRIPTION</A>
<LI><A HREF="#ABSTRACT">ABSTRACT</A>
<LI><A HREF="#REQUIREMENT">REQUIREMENT</A>
<LI><A HREF="#PUBLIC_METHODS">PUBLIC METHODS</A>
<LI><A HREF="#name">NAME</A></LI>
<LI><A HREF="#synopsis">SYNOPSIS</A></LI>
<LI><A HREF="#description">DESCRIPTION</A></LI>
<LI><A HREF="#abstract">ABSTRACT</A></LI>
<LI><A HREF="#requirement">REQUIREMENT</A></LI>
<LI><A HREF="#public methods">PUBLIC METHODS</A></LI>
<UL>
<LI><A HREF="#new_HASH_OPTIONS">new HASH_OPTIONS</A>
<LI><A HREF="#export_sql_FILENAME">export_sql FILENAME</A>
<LI><A HREF="#new hash_options">new HASH_OPTIONS</A></LI>
<LI><A HREF="#export_data filename">export_data FILENAME</A></LI>
<LI><A HREF="#export_sql filename">export_sql FILENAME</A></LI>
<LI><A HREF="#send_to_pgdb dest_datasrc dest_user dest_passwd">send_to_pgdb DEST_DATASRC DEST_USER DEST_PASSWD</A></LI>
<LI><A HREF="#modify_struct table_name arrayof_fieldname">modify_struct TABLE_NAME ARRAYOF_FIELDNAME</A></LI>
</UL>
<LI><A HREF="#PRIVATE_METHODS">PRIVATE METHODS</A>
<LI><A HREF="#private methods">PRIVATE METHODS</A></LI>
<UL>
<LI><A HREF="#_init_HASH_OPTIONS">_init HASH_OPTIONS</A>
<LI><A HREF="#_grants">_grants</A>
<LI><A HREF="#_sequences">_sequences</A>
<LI><A HREF="#_triggers">_triggers</A>
<LI><A HREF="#_functions">_functions</A>
<LI><A HREF="#_tables">_tables</A>
<LI><A HREF="#_views">_views</A>
<LI><A HREF="#_get_sql_data">_get_sql_data</A>
<LI><A HREF="#_sql_type_INTERNAL_TYPE_LENGTH">_sql_type INTERNAL_TYPE LENGTH</A>
<LI><A HREF="#_column_info_TABLE">_column_info TABLE</A>
<LI><A HREF="#_primary_key_TABLE">_primary_key TABLE</A>
<LI><A HREF="#_unique_key_TABLE">_unique_key TABLE</A>
<LI><A HREF="#_foreign_key_TABLE">_foreign_key TABLE</A>
<LI><A HREF="#_get_users">_get_users</A>
<LI><A HREF="#_get_roles">_get_roles</A>
<LI><A HREF="#_get_all_grants">_get_all_grants</A>
<LI><A HREF="#_get_indexes_TABLE">_get_indexes TABLE</A>
<LI><A HREF="#_get_sequences">_get_sequences</A>
<LI><A HREF="#_get_views">_get_views</A>
<LI><A HREF="#_get_triggers">_get_triggers</A>
<LI><A HREF="#_get_functions">_get_functions</A>
<LI><A HREF="#_table_info">_table_info</A>
<LI><A HREF="#_init hash_options">_init HASH_OPTIONS</A></LI>
<LI><A HREF="#_grants">_grants</A></LI>
<LI><A HREF="#_sequences">_sequences</A></LI>
<LI><A HREF="#_triggers">_triggers</A></LI>
<LI><A HREF="#_functions">_functions</A></LI>
<LI><A HREF="#_packages">_packages</A></LI>
<LI><A HREF="#_tables">_tables</A></LI>
<LI><A HREF="#_views">_views</A></LI>
<LI><A HREF="#_get_sql_data">_get_sql_data</A></LI>
<LI><A HREF="#_get_data table">_get_data TABLE</A></LI>
<LI><A HREF="#_sql_type internal_type length precision scale">_sql_type INTERNAL_TYPE LENGTH PRECISION SCALE</A></LI>
<LI><A HREF="#_column_info table">_column_info TABLE</A></LI>
<LI><A HREF="#_primary_key table">_primary_key TABLE</A></LI>
<LI><A HREF="#_unique_key table">_unique_key TABLE</A></LI>
<LI><A HREF="#_foreign_key table">_foreign_key TABLE</A></LI>
<LI><A HREF="#_get_users">_get_users</A></LI>
<LI><A HREF="#_get_roles">_get_roles</A></LI>
<LI><A HREF="#_get_all_grants">_get_all_grants</A></LI>
<LI><A HREF="#_get_indexes table">_get_indexes TABLE</A></LI>
<LI><A HREF="#_get_sequences">_get_sequences</A></LI>
<LI><A HREF="#_get_views">_get_views</A></LI>
<LI><A HREF="#_alias_info">_alias_info</A></LI>
<LI><A HREF="#_get_triggers">_get_triggers</A></LI>
<LI><A HREF="#_get_functions">_get_functions</A></LI>
<LI><A HREF="#_get_packages">_get_packages</A></LI>
<LI><A HREF="#_table_info">_table_info</A></LI>
</UL>
<LI><A HREF="#AUTHOR">AUTHOR</A>
<LI><A HREF="#COPYRIGHT">COPYRIGHT</A>
<LI><A HREF="#BUGS">BUGS</A>
<LI><A HREF="#SEE_ALSO">SEE ALSO</A>
<LI><A HREF="#author">AUTHOR</A></LI>
<LI><A HREF="#copyright">COPYRIGHT</A></LI>
<LI><A HREF="#bugs">BUGS</A></LI>
<LI><A HREF="#see also">SEE ALSO</A></LI>
<LI><A HREF="#acknowledgements">ACKNOWLEDGEMENTS</A></LI>
</UL>
<!-- INDEX END -->
<HR>
<P>
<H1><A NAME="NAME">NAME</A></H1>
<P>
Ora2Pg - Oracle to PostgreSQL database schema converter
<H1><A NAME="name">NAME</A></H1>
<P>Ora2Pg - Oracle to PostgreSQL database schema converter</P>
<P>
<HR>
<H1><A NAME="SYNOPSIS">SYNOPSIS</A></H1>
<P>
<PRE> BEGIN {
<H1><A NAME="synopsis">SYNOPSIS</A></H1>
<PRE>
BEGIN {
$ENV{ORACLE_HOME} = '/usr/local/oracle/oracle816';
}
</PRE>
<P>
<PRE> use strict;
</PRE>
<P>
<PRE> use Ora2Pg;
</PRE>
<P>
<PRE> # Init the database connection
}</PRE>
<PRE>
use strict;</PRE>
<PRE>
use Ora2Pg;</PRE>
<PRE>
# Init the database connection
my $dbsrc = 'dbi:Oracle:host=testdb.samse.fr;sid=TEST;port=1521';
my $dbuser = 'system';
my $dbpwd = 'manager';
</PRE>
<P>
<PRE> # Create an instance of the Ora2Pg perl module
my $dbpwd = 'manager';</PRE>
<PRE>
# Create an instance of the Ora2Pg perl module
my $schema = new Ora2Pg (
datasource =&gt; $dbsrc, # Database DBD datasource
user =&gt; $dbuser, # Database user
password =&gt; $dbpwd, # Database password
);
</PRE>
<P>
<PRE> # Create the POSTGRESQL representation of all objects in the database
$schema-&gt;export_schema(&quot;output.sql&quot;);
</PRE>
<P>
<PRE> exit(0);
</PRE>
<P>
or if you only want to extract some tables:
<P>
<PRE> # Create an instance of the Ora2Pg perl module
{
PrintError =&gt; 0,
RaiseError =&gt; 1,
AutoCommit =&gt; 0
}
);</PRE>
<PRE>
# Create the POSTGRESQL representation of all objects in the database
$schema-&gt;export_schema(&quot;output.sql&quot;);</PRE>
<PRE>
exit(0);</PRE>
<P>or if you only want to extract some tables:</P>
<PRE>
# Create an instance of the Ora2Pg perl module
my @tables = ('tab1', 'tab2', 'tab3');
my $schema = new Ora2Pg (
datasource =&gt; $dbsrc, # Database DBD datasource
@ -111,483 +114,366 @@ or if you only want to extract some tables:
or # Tables to extract
tables =&gt; [('tab1','tab2')],
debug =&gt; 1 # To show somethings when running
);
</PRE>
<P>
or if you only want to extract the 10 first tables:
<P>
<PRE> # Create an instance of the Ora2Pg perl module
);</PRE>
<P>or if you only want to extract the 10 first tables:</P>
<PRE>
# Create an instance of the Ora2Pg perl module
my $schema = new Ora2Pg (
datasource =&gt; $dbsrc, # Database DBD datasource
user =&gt; $dbuser, # Database user
password =&gt; $dbpwd, # Database password
max =&gt; 10 # 10 first tables to extract
);
</PRE>
<P>
or if you only want to extract tables 10 to 20:
<P>
<PRE> # Create an instance of the Ora2Pg perl module
);</PRE>
<P>or if you only want to extract tables 10 to 20:</P>
<PRE>
# Create an instance of the Ora2Pg perl module
my $schema = new Ora2Pg (
datasource =&gt; $dbsrc, # Database DBD datasource
user =&gt; $dbuser, # Database user
password =&gt; $dbpwd, # Database password
min =&gt; 10, # Begin extraction at indice 10
max =&gt; 20 # End extraction at indice 20
);
</PRE>
<P>
To choose a particular schema just set the following option to your schema
name :
<P>
<PRE> schema =&gt; 'APPS'
</PRE>
<P>
To know at which indices table can be found during extraction use the
option:
<P>
<PRE> showtableid =&gt; 1
</PRE>
<P>
To extract all views set the option type as follow:
<P>
<PRE> type =&gt; 'VIEW'
</PRE>
<P>
To extract all grants set the option type as follow:
<P>
<PRE> type =&gt; 'GRANT'
</PRE>
<P>
To extract all sequences set the option type as follow:
<P>
<PRE> type =&gt; 'SEQUENCE'
</PRE>
<P>
To extract all triggers set the option type as follow:
<P>
<PRE> type =&gt; 'TRIGGER'
</PRE>
<P>
To extract all functions set the option type as follow:
<P>
<PRE> type =&gt; 'FUNCTION'
</PRE>
<P>
To extract all procedures set the option type as follow:
<P>
<PRE> type =&gt; 'PROCEDURE'
</PRE>
<P>
Default is table schema extraction
<P>
<PRE> type =&gt; 'TABLE'
</PRE>
);</PRE>
<P>To choose a particular Oracle schema to export just set the following option
to your schema name:</P>
<PRE>
schema =&gt; 'APPS'</PRE>
<P>This schema definition can also be needed when you want to export data. If export
failed and complain that the table doesn't exists use this to prefix the table name
by the schema name.</P>
<P>To know at which indices tables can be found during extraction use the option:</P>
<PRE>
showtableid =&gt; 1</PRE>
<P>To extract all views set the type option as follow:</P>
<PRE>
type =&gt; 'VIEW'</PRE>
<P>To extract all grants set the type option as follow:</P>
<PRE>
type =&gt; 'GRANT'</PRE>
<P>To extract all sequences set the type option as follow:</P>
<PRE>
type =&gt; 'SEQUENCE'</PRE>
<P>To extract all triggers set the type option as follow:</P>
<PRE>
type =&gt; 'TRIGGER'</PRE>
<P>To extract all functions set the type option as follow:</P>
<PRE>
type =&gt; 'FUNCTION'</PRE>
<P>To extract all procedures set the type option as follow:</P>
<PRE>
type =&gt; 'PROCEDURE'</PRE>
<P>To extract all packages and body set the type option as follow:</P>
<PRE>
type =&gt; 'PACKAGE'</PRE>
<P>Default is table extraction</P>
<PRE>
type =&gt; 'TABLE'</PRE>
<P>To extract all data from table extraction as INSERT statement use:</P>
<PRE>
type =&gt; 'DATA'</PRE>
<P>To extract all data from table extraction as COPY statement use:</P>
<PRE>
type =&gt; 'COPY'</PRE>
<P>and data_limit =&gt; n to specify the max tuples to return. If you set
this options to 0 or nothing, no limitation are used. Additional option
'table', 'min' and 'max' can also be used.</P>
<P>When use of COPY or DATA you can export data by calling method:</P>
<P>$schema-&gt;export_data(``output.sql'');</P>
<P>Data are dumped to the given filename or to STDOUT with no argument.
You can also send these data directly to a PostgreSQL backend using
the following method:</P>
<P>$schema-&gt;send_to_pgdb($destdatasrc,$destuser,$destpasswd);</P>
<P>In this case you must call <CODE>export_data()</CODE> without argument after the
call to method send_to_pgdb().</P>
<P>If you set type to COPY and you want to dump data directly to a PG database,
you must call method send_to_pgdb but data will not be sent via DBD::Pg but
they will be load to the database using the psql command. Calling this method
is istill required to be able to extract database name, hostname and port
information. Edit the $PSQL variable to match the path of your psql
command (nothing to edit if psql is in your path).</P>
<P>
<HR>
<H1><A NAME="DESCRIPTION">DESCRIPTION</A></H1>
<P>
Ora2Pg is a perl OO module used to export an Oracle database schema to a
PostgreSQL compatible schema.
<P>
It simply connect to your Oracle database, extract its structure and
generate a SQL script that you can load into your PostgreSQL database.
<P>
I'm not a Oracle DBA so I don't really know something about its internal
<H1><A NAME="description">DESCRIPTION</A></H1>
<P>Ora2Pg is a perl OO module used to export an Oracle database schema
to a PostgreSQL compatible schema.</P>
<P>It simply connect to your Oracle database, extract its structure and
generate a SQL script that you can load into your PostgreSQL database.</P>
<P>I'm not a Oracle DBA so I don't really know something about its internal
structure so you may find some incorrect things. Please tell me what is
wrong and what can be better.
<P>
It currently dump the database schema (tables, views, sequences, indexes,
grants), with primary, unique and foreign keys into PostgreSQL syntax
without editing the SQL code generated.
<P>
Functions, procedures and triggers PL/SQL code generated must be reviewed
to match the PostgreSQL syntax. Some usefull recommandation on porting
Oracle to PostgreSQL can be found at <A
HREF="http://techdocs.postgresql.org/">http://techdocs.postgresql.org/</A>
under the ``Converting from other Databases to PostgreSQL'' Oracle part. I
just notice one thing more is that the <CODE>trunc()</CODE> function in
Oracle is the same for number or date so be carefull when porting to
PostgreSQL to use <CODE>trunc()</CODE> for number and
<CODE>date_trunc()</CODE> for date.
wrong and what can be better.</P>
<P>It currently dump the database schema (tables, views, sequences, indexes, grants),
with primary, unique and foreign keys into PostgreSQL syntax without editing the
SQL code generated.</P>
<P>It now can dump Oracle data into PostgreSQL DB as online process. You can choose
what columns can be exported for each table.</P>
<P>Functions, procedures and triggers PL/SQL code generated must be reviewed to match
the PostgreSQL syntax. Some usefull recommandation on porting Oracle to PostgreSQL
can be found at <A HREF="http://techdocs.postgresql.org/">http://techdocs.postgresql.org/</A> under the ``Converting from other
Databases to PostgreSQL'' Oracle part. I just notice one thing more is that the
<CODE>trunc()</CODE> function in Oracle is the same for number or date so be carefull when
porting to PostgreSQL to use <CODE>trunc()</CODE> for number and <CODE>date_trunc()</CODE> for date.</P>
<P>
<HR>
<H1><A NAME="ABSTRACT">ABSTRACT</A></H1>
<P>
The goal of the Ora2Pg perl module is to cover all part needed to export an
Oracle database to a PostgreSQL database without other thing that provide
the connection parameters to the Oracle database.
<P>
Features must include:
<P>
<PRE> - Database schema export (tables, views, sequences, indexes),
<H1><A NAME="abstract">ABSTRACT</A></H1>
<P>The goal of the Ora2Pg perl module is to cover all part needed to export
an Oracle database to a PostgreSQL database without other thing that provide
the connection parameters to the Oracle database.</P>
<P>Features must include:</P>
<PRE>
- Database schema export (tables, views, sequences, indexes),
with unique, primary and foreign key.
- Grants/privileges export by user and group.
- Table selection (by name and max table) export.
- Predefined functions/triggers/procedures export.
- Sql query converter (todo)
- Data export (todo)
</PRE>
<P>
My knowledge regarding database is really poor especially for Oracle so
contribution is welcome.
- Predefined functions/triggers/procedures/packages export.
- Data export.
- Sql query converter (todo)</PRE>
<P>My knowledge regarding database is really poor especially for Oracle
so contribution is welcome.</P>
<P>
<HR>
<H1><A NAME="REQUIREMENT">REQUIREMENT</A></H1>
<P>
You just need the DBI and DBD::Oracle perl module to be installed
<H1><A NAME="requirement">REQUIREMENT</A></H1>
<P>You just need the DBI, DBD::Pg and DBD::Oracle perl module to be installed</P>
<P>
<HR>
<H1><A NAME="PUBLIC_METHODS">PUBLIC METHODS</A></H1>
<H1><A NAME="public methods">PUBLIC METHODS</A></H1>
<P>
<HR>
<H2><A NAME="new_HASH_OPTIONS">new HASH_OPTIONS</A></H2>
<P>
Creates a new Ora2Pg object.
<P>
Supported options are:
<P>
<PRE> - datasource : DBD datasource (required)
<H2><A NAME="new hash_options">new HASH_OPTIONS</A></H2>
<P>Creates a new Ora2Pg object.</P>
<P>Supported options are:</P>
<PRE>
- datasource : DBD datasource (required)
- user : DBD user (optional with public access)
- password : DBD password (optional with public access)
- schema : Oracle internal schema to extract
- type : Type of data to extract, can be TABLE,VIEW,GRANT,SEQUENCE,TRIGGER,FUNCTION,PROCEDURE
- type : Type of data to extract, can be TABLE,VIEW,GRANT,SEQUENCE,
TRIGGER,FUNCTION,PROCEDURE,DATA,COPY,PACKAGE
- debug : Print the current state of the parsing
- tables : Extract only the given tables (arrayref)
- showtableid : Display only the table indice during extraction
- min : Indice to begin extraction. Default to 0
- max : Indice to end extraction. Default to 0 mean no limits
</PRE>
- data_limit : Number max of tuples to return during data extraction (default 10)</PRE>
<P>Attempt that this list should grow a little more because all initialization is
done by this way.</P>
<P>
Attempt that this list should grow a little more because all initialization
is done by this way.
<H2><A NAME="export_data filename">export_data FILENAME</A></H2>
<P>Print SQL data output to a filename or
to STDOUT if no file is given.</P>
<P>Must be used only if type option is set to DATA or COPY
=cut</P>
<P>sub export_data
{
my ($self, $outfile) = @_;</P>
<PRE>
$self-&gt;_get_sql_data($outfile);
}</PRE>
<P>
<H2><A NAME="export_sql filename">export_sql FILENAME</A></H2>
<P>Print SQL conversion output to a filename or
simply return these data if no file is given.</P>
<P>
<H2><A NAME="send_to_pgdb dest_datasrc dest_user dest_passwd">send_to_pgdb DEST_DATASRC DEST_USER DEST_PASSWD</A></H2>
<P>Open a DB handle to a PostgreSQL database</P>
<P>
<H2><A NAME="modify_struct table_name arrayof_fieldname">modify_struct TABLE_NAME ARRAYOF_FIELDNAME</A></H2>
<P>Modify a table structure during export. Only given fieldname
will be exported.</P>
<P>
<HR>
<H2><A NAME="export_sql_FILENAME">export_sql FILENAME</A></H2>
<H1><A NAME="private methods">PRIVATE METHODS</A></H1>
<P>
Print SQL conversion output to a filename or to STDOUT if no file is given.
<H2><A NAME="_init hash_options">_init HASH_OPTIONS</A></H2>
<P>Initialize a Ora2Pg object instance with a connexion to the
Oracle database.</P>
<P>
<HR>
<H1><A NAME="PRIVATE_METHODS">PRIVATE METHODS</A></H1>
<P>
<HR>
<H2><A NAME="_init_HASH_OPTIONS">_init HASH_OPTIONS</A></H2>
<P>
Initialize a Ora2Pg object instance with a connexion to the Oracle
database.
<P>
<HR>
<H2><A NAME="_grants">_grants</A></H2>
<P>This function is used to retrieve all privilege information.</P>
<P>It extract all Oracle's ROLES to convert them as Postgres groups
and search all users associated to these roles.</P>
<P>Set the main hash $self-&gt;{groups}.
Set the main hash $self-&gt;{grantss}.</P>
<P>
This function is used to retrieve all privilege information.
<P>
It extract all Oracle's ROLES to convert them as Postgres groups and search
all users associated to these roles.
<P>
Set the main hash $self-&gt;{groups}. Set the main hash
$self-&gt;{grantss}.
<P>
<HR>
<H2><A NAME="_sequences">_sequences</A></H2>
<P>This function is used to retrieve all sequences information.</P>
<P>Set the main hash $self-&gt;{sequences}.</P>
<P>
This function is used to retrieve all sequences information.
<P>
Set the main hash $self-&gt;{sequences}.
<P>
<HR>
<H2><A NAME="_triggers">_triggers</A></H2>
<P>This function is used to retrieve all triggers information.</P>
<P>Set the main hash $self-&gt;{triggers}.</P>
<P>
This function is used to retrieve all triggers information.
<P>
Set the main hash $self-&gt;{triggers}.
<P>
<HR>
<H2><A NAME="_functions">_functions</A></H2>
<P>This function is used to retrieve all functions information.</P>
<P>Set the main hash $self-&gt;{functions}.</P>
<P>
This function is used to retrieve all functions information.
<H2><A NAME="_packages">_packages</A></H2>
<P>This function is used to retrieve all packages information.</P>
<P>Set the main hash $self-&gt;{packages}.</P>
<P>
Set the main hash $self-&gt;{functions}.
<P>
<HR>
<H2><A NAME="_tables">_tables</A></H2>
<P>
This function is used to retrieve all table information.
<P>
Set the main hash of the database structure $self-&gt;{tables}. Keys are
the names of all tables retrieved from the current database. Each table
information compose an array associated to the table_info key as array
reference. In other way:
<P>
<PRE> $self-&gt;{tables}{$class_name}{table_info} = [(OWNER,TYPE)];
</PRE>
<P>
DBI TYPE can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY, LOCAL
TEMPORARY, ALIAS, SYNONYM or a data source specific type identifier. This
only extract TABLE type.
<P>
It also get the following informations in the DBI object to affect the main
hash of the database structure :
<P>
<PRE> $self-&gt;{tables}{$class_name}{field_name} = $sth-&gt;{NAME};
$self-&gt;{tables}{$class_name}{field_type} = $sth-&gt;{TYPE};
</PRE>
<P>
It also call these other private subroutine to affect the main hash of the
database structure :
<P>
<PRE> @{$self-&gt;{tables}{$class_name}{column_info}} = $self-&gt;_column_info($class_name);
<P>This function is used to retrieve all table information.</P>
<P>Set the main hash of the database structure $self-&gt;{tables}.
Keys are the names of all tables retrieved from the current
database. Each table information compose an array associated
to the table_info key as array reference. In other way:</P>
<PRE>
$self-&gt;{tables}{$class_name}{table_info} = [(OWNER,TYPE)];</PRE>
<P>DBI TYPE can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY, LOCAL TEMPORARY,
ALIAS, SYNONYM or a data source specific type identifier. This only extract
TABLE type.</P>
<P>It also get the following informations in the DBI object to affect the
main hash of the database structure :</P>
<PRE>
$self-&gt;{tables}{$class_name}{field_name} = $sth-&gt;{NAME};
$self-&gt;{tables}{$class_name}{field_type} = $sth-&gt;{TYPE};</PRE>
<P>It also call these other private subroutine to affect the main hash
of the database structure :</P>
<PRE>
@{$self-&gt;{tables}{$class_name}{column_info}} = $self-&gt;_column_info($class_name);
@{$self-&gt;{tables}{$class_name}{primary_key}} = $self-&gt;_primary_key($class_name);
@{$self-&gt;{tables}{$class_name}{unique_key}} = $self-&gt;_unique_key($class_name);
@{$self-&gt;{tables}{$class_name}{foreign_key}} = $self-&gt;_foreign_key($class_name);
</PRE>
@{$self-&gt;{tables}{$class_name}{foreign_key}} = $self-&gt;_foreign_key($class_name);</PRE>
<P>
<HR>
<H2><A NAME="_views">_views</A></H2>
<P>This function is used to retrieve all views information.</P>
<P>Set the main hash of the views definition $self-&gt;{views}.
Keys are the names of all views retrieved from the current
database values are the text definition of the views.</P>
<P>It then set the main hash as follow:</P>
<PRE>
# Definition of the view
$self-&gt;{views}{$table}{text} = $view_infos{$table};</PRE>
<P>
This function is used to retrieve all views information.
<P>
Set the main hash of the views definition $self-&gt;{views}. Keys are the
names of all views retrieved from the current database values are the text
definition of the views.
<P>
It then set the main hash as follow:
<P>
<PRE> # Definition of the view
$self-&gt;{views}{$table}{text} = $view_infos{$table};
</PRE>
<P>
<HR>
<H2><A NAME="_get_sql_data">_get_sql_data</A></H2>
<P>Returns a string containing the entire SQL Schema definition compatible with PostgreSQL</P>
<P>
Returns a string containing the entire SQL Schema definition compatible
with PostgreSQL
<H2><A NAME="_get_data table">_get_data TABLE</A></H2>
<P>This function implements a Oracle-native data extraction.</P>
<P>Return a list of array reference containing the data</P>
<P>
<HR>
<H2><A NAME="_sql_type_INTERNAL_TYPE_LENGTH">_sql_type INTERNAL_TYPE LENGTH</A></H2>
<H2><A NAME="_sql_type internal_type length precision scale">_sql_type INTERNAL_TYPE LENGTH PRECISION SCALE</A></H2>
<P>This function return the PostgreSQL datatype corresponding to the
Oracle internal type.</P>
<P>
This function return the PostgreSQL datatype corresponding to the Oracle
internal type.
<H2><A NAME="_column_info table">_column_info TABLE</A></H2>
<P>This function implements a Oracle-native column information.</P>
<P>Return a list of array reference containing the following informations
for each column the given a table</P>
<P>[(
column name,
column type,
column length,
nullable column,
default value
)]</P>
<P>
<HR>
<H2><A NAME="_column_info_TABLE">_column_info TABLE</A></H2>
<H2><A NAME="_primary_key table">_primary_key TABLE</A></H2>
<P>This function implements a Oracle-native primary key column
information.</P>
<P>Return a list of all column name defined as primary key
for the given table.</P>
<P>
This function implements a Oracle-native column information.
<H2><A NAME="_unique_key table">_unique_key TABLE</A></H2>
<P>This function implements a Oracle-native unique key column
information.</P>
<P>Return a list of all column name defined as unique key
for the given table.</P>
<P>
Return a list of array reference containing the following informations for
each column the given a table
<H2><A NAME="_foreign_key table">_foreign_key TABLE</A></H2>
<P>This function implements a Oracle-native foreign key reference
information.</P>
<P>Return a list of hash of hash of array reference. Ouuf! Nothing very difficult.
The first hash is composed of all foreign key name. The second hash just have
two key known as 'local' and remote' corresponding to the local table where the
foreign key is defined and the remote table where the key refer.</P>
<P>The foreign key name is composed as follow:</P>
<PRE>
'local_table_name-&gt;remote_table_name'</PRE>
<P>Foreign key data consist in two array representing at the same indice the local
field and the remote field where the first one refer to the second.
Just like this:</P>
<PRE>
@{$link{$fkey_name}{local}} = @local_columns;
@{$link{$fkey_name}{remote}} = @remote_columns;</PRE>
<P>
[( column name, column type, column length, nullable column, default value
)]
<P>
<HR>
<H2><A NAME="_primary_key_TABLE">_primary_key TABLE</A></H2>
<P>
This function implements a Oracle-native primary key column information.
<P>
Return a list of all column name defined as primary key for the given
table.
<P>
<HR>
<H2><A NAME="_unique_key_TABLE">_unique_key TABLE</A></H2>
<P>
This function implements a Oracle-native unique key column information.
<P>
Return a list of all column name defined as unique key for the given table.
<P>
<HR>
<H2><A NAME="_foreign_key_TABLE">_foreign_key TABLE</A></H2>
<P>
This function implements a Oracle-native foreign key reference information.
<P>
Return a list of hash of hash of array reference. Ouuf! Nothing very
difficult. The first hash is composed of all foreign key name. The second
hash just have two key known as 'local' and remote' corresponding to the
local table where the foreign key is defined and the remote table where the
key refer.
<P>
The foreign key name is composed as follow:
<P>
<PRE> 'local_table_name-&gt;remote_table_name'
</PRE>
<P>
Foreign key data consist in two array representing at the same indice the
local field and the remote field where the first one refer to the second.
Just like this:
<P>
<PRE> @{$link{$fkey_name}{local}} = @local_columns;
@{$link{$fkey_name}{remote}} = @remote_columns;
</PRE>
<P>
<HR>
<H2><A NAME="_get_users">_get_users</A></H2>
<P>This function implements a Oracle-native users information.</P>
<P>Return a hash of all users as an array.</P>
<P>
This function implements a Oracle-native users information.
<P>
Return a hash of all users as an array.
<P>
<HR>
<H2><A NAME="_get_roles">_get_roles</A></H2>
<P>This function implements a Oracle-native roles
information.</P>
<P>Return a hash of all groups (roles) as an array of associated users.</P>
<P>
This function implements a Oracle-native roles information.
<P>
Return a hash of all groups (roles) as an array of associated users.
<P>
<HR>
<H2><A NAME="_get_all_grants">_get_all_grants</A></H2>
<P>This function implements a Oracle-native user privilege
information.</P>
<P>Return a hash of all tables grants as an array of associated users.</P>
<P>
This function implements a Oracle-native user privilege information.
<H2><A NAME="_get_indexes table">_get_indexes TABLE</A></H2>
<P>This function implements a Oracle-native indexes information.</P>
<P>Return hash of array containing all unique index and a hash of
array of all indexes name which are not primary keys for the
given table.</P>
<P>
Return a hash of all tables grants as an array of associated users.
<P>
<HR>
<H2><A NAME="_get_indexes_TABLE">_get_indexes TABLE</A></H2>
<P>
This function implements a Oracle-native indexes information.
<P>
Return hash of array containing all unique index and a hash of array of all
indexes name which are not primary keys for the given table.
<P>
<HR>
<H2><A NAME="_get_sequences">_get_sequences</A></H2>
<P>This function implements a Oracle-native sequences
information.</P>
<P>Return a hash of array of sequence name with MIN_VALUE, MAX_VALUE,
INCREMENT and LAST_NUMBER for the given table.</P>
<P>
This function implements a Oracle-native sequences information.
<P>
Return a hash of array of sequence name with MIN_VALUE, MAX_VALUE,
INCREMENT and LAST_NUMBER for the given table.
<P>
<HR>
<H2><A NAME="_get_views">_get_views</A></H2>
<P>This function implements a Oracle-native views information.</P>
<P>Return a hash of view name with the SQL query it is based on.</P>
<P>
This function implements a Oracle-native views information.
<H2><A NAME="_alias_info">_alias_info</A></H2>
<P>This function implements a Oracle-native column information.</P>
<P>Return a list of array reference containing the following informations
for each alias of the given view</P>
<P>[(
column name,
column id
)]</P>
<P>
Return a hash of view name with the SQL query it is based on.
<P>
<HR>
<H2><A NAME="_get_triggers">_get_triggers</A></H2>
<P>This function implements a Oracle-native triggers information.</P>
<P>Return an array of refarray of all triggers informations</P>
<P>
This function implements a Oracle-native triggers information.
<P>
Return an array of refarray of all triggers informations
<P>
<HR>
<H2><A NAME="_get_functions">_get_functions</A></H2>
<P>This function implements a Oracle-native functions information.</P>
<P>Return a hash of all function name with their PLSQL code</P>
<P>
This function implements a Oracle-native functions information.
<H2><A NAME="_get_packages">_get_packages</A></H2>
<P>This function implements a Oracle-native packages information.</P>
<P>Return a hash of all function name with their PLSQL code</P>
<P>
Return a hash of all function name with their PLSQL code
<P>
<HR>
<H2><A NAME="_table_info">_table_info</A></H2>
<P>
This function retrieve all Oracle-native tables information.
<P>
Return a handle to a DB query statement
<P>This function retrieve all Oracle-native tables information.</P>
<P>Return a handle to a DB query statement</P>
<P>
<HR>
<H1><A NAME="AUTHOR">AUTHOR</A></H1>
<P>
Gilles Darold &lt;<A
HREF="mailto:gilles@darold.net">gilles@darold.net</A>&gt;
<H1><A NAME="author">AUTHOR</A></H1>
<P>Gilles Darold &lt;<A HREF="mailto:gilles@darold.net">gilles@darold.net</A>&gt;</P>
<P>
<HR>
<H1><A NAME="COPYRIGHT">COPYRIGHT</A></H1>
<P>
Copyright (c) 2001 Gilles Darold - All rights reserved.
<P>
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
<H1><A NAME="copyright">COPYRIGHT</A></H1>
<P>Copyright (c) 2001 Gilles Darold - All rights reserved.</P>
<P>This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.</P>
<P>
<HR>
<H1><A NAME="BUGS">BUGS</A></H1>
<P>
This perl module is in the same state as my knowledge regarding database,
<H1><A NAME="bugs">BUGS</A></H1>
<P>This perl module is in the same state as my knowledge regarding database,
it can move and not be compatible with older version so I will do my best
to give you official support for Ora2Pg. Your volontee to help construct it
and your contribution are welcome.
to give you official support for Ora2Pg. Your volontee to help construct
it and your contribution are welcome.</P>
<P>
<HR>
<H1><A NAME="SEE_ALSO">SEE ALSO</A></H1>
<H1><A NAME="see also">SEE ALSO</A></H1>
<P><EM>DBI</EM>, <A HREF="/DBD/Oracle.html">the DBD::Oracle manpage</A>, <A HREF="/DBD/Pg.html">the DBD::Pg manpage</A></P>
<P>
<EM>DBI</EM>, <A HREF="/DBD/Oracle.html">DBD::Oracle</A>
<HR>
<H1><A NAME="acknowledgements">ACKNOWLEDGEMENTS</A></H1>
<P>Thanks to Jason Servetar who decided me to implement data extraction.</P>
</BODY>

25
contrib/oracle/ora2pg.pl
View File

@ -8,7 +8,7 @@
# Copyright: Copyright (c) 2000 : Gilles Darold - All rights reserved -
# Function : Script used to convert Oracle Database schema to PostgreSQL
#------------------------------------------------------------------------------
# Version : 1.0
# Version : 1.1
#------------------------------------------------------------------------------
BEGIN {
@ -32,6 +32,9 @@ my $schema = new Ora2Pg (
debug => 1, # Verbose mode
schema => 'APPS', # Extract only APPS schema
type => 'TABLE', # Extract table
# type => 'PACKAGE', # Extract PACKAGE information
# type => 'DATA', # Extract data with output as INSERT statement
# type => 'COPY', # Extract data with output as COPY statement
# type => 'VIEW', # Extract views
# type => 'GRANT', # Extract privileges
# type => 'SEQUENCE', # Extract sequences
@ -45,11 +48,25 @@ my $schema = new Ora2Pg (
# tables => [('TRIP_DATA')], # Foreign key
# showtableid => 1, # Display only table indice during extraction
# min => 1, # Extract begin at indice 3
# max => 10 # Extract ended at indice 5
# max => 10, # Extract ended at indice 5
# data_limit => 1000, # Extract all data by dump of 1000 tuples
# data_limit => 0, # Extract all data in one pass. Be sure to have enougth memory
);
# Create the POSTGRESQL representation of all objects in the database
$schema->export_schema("output.sql");
# Just export data of the following fields from table 's_txcot'
#$schema->modify_struct('s_txcot','dossier', 'rub', 'datapp');
# Function to use for extraction when type option is set to DATA or COPY
# Send exported data to a PostgreSQL database
#$schema->send_to_pgdb('dbi:Pg:dbname=template1;host=localhost;port=5432','test','test');
# Output the data extracted from Oracle DB to a file or to STDOUT if no argument.
# If you set the send_to_pgdb() method the output is given to PG database. See above
#$schema->export_data("output.sql");
# Function to use ifor extraction with other type
# Create the POSTGRESQL representation of all objects in the database
$schema->export_schema("output.sql");
exit(0);