With version 7.1 of PostgreSQL server, the old naming scheme for
databases and tables (in $PGDATA/base) has changed. The databases
are put in folders for their OID in pg_database and the tables in
that folder are named for their OIDs in pg_class. This app connects
to the database (you can specify host, port, user, pass etc to
connect to a host other than localhost) and extracts the OID and
table name information. It has 4 ways it can be run:
pg_oid2name
This will connect to the template1 database and display all databases
in the system.
$ ./pg_oid2name
All databases:
---------------------------------
18720 = test1
1 = template1
18719 = template0
18721 = test
18735 = postgres
18736 = cssi
pg_oid2name -d test [-x]
This connects to the database test and shows all tables and their OIDs.
$ ./pg_oid2name -d test
All tables from database "test":
---------------------------------
18766 = dns
18737 = ips
18722 = testdate
pg_oid2name -d test -o 18737 or
pg_oid2name -d test -t testdate
This will connect to the database test and display the table name for oid
18737 and the oid for table name testdate respectivly.
$ ./pg_oid2name -d test -o 18737
Tablename of oid 18737 from database "test":
---------------------------------
18737 = ips
$ ./pg_oid2name -d test -t testdate
Oid of table testdate from database "test":
_______________________________
18722 = testdate
There should be a decent amount of error handling in the app, a lot of it
dealt with via the postgres function calls.
$ ./pg_oid2name -d nothere -t testdate
Oid of table testdate from database "nothere":
_______________________________
Connection to database 'nothere' failed.
FATAL 1: Database "nothere" does not exist in the system catalog.
$ ./pg_oid2name -d test -t nothere
Oid of table nothere from database "test":
_______________________________
No tables with that name found
Mail me with any problems or additions you would like to see. Clearing
house for the code will be at: http://www.crimelabs.net
b. palmer, bpalmer@crimelabs.net
