diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgml index 5830be1996..83b72ad6b1 100644 --- a/doc/src/sgml/backup.sgml +++ b/doc/src/sgml/backup.sgml @@ -1,4 +1,4 @@ - + Backup and Restore @@ -76,7 +76,7 @@ pg_dump dbname > pg_dump does not block other operations on the database while it is working. (Exceptions are those operations that need to operate with an - exclusive lock, such as VACUUM.) + exclusive lock, such as VACUUM FULL.) diff --git a/doc/src/sgml/maintenance.sgml b/doc/src/sgml/maintenance.sgml index d963b7a767..f58af65ca7 100644 --- a/doc/src/sgml/maintenance.sgml +++ b/doc/src/sgml/maintenance.sgml @@ -1,5 +1,5 @@ @@ -105,8 +105,8 @@ $Header: /cvsroot/pgsql/doc/src/sgml/maintenance.sgml,v 1.6 2001/11/12 19:19:39 In normal PostgreSQL operation, an UPDATE or DELETE of a row does not immediately remove the old tuple (version of the row). This approach is necessary to gain the benefits - of multiversion concurrency control (see the User's Guide): the tuple - must not be deleted while + of multiversion concurrency control (see the User's Guide): + the tuple must not be deleted while it is still potentially visible to other transactions. But eventually, an outdated or deleted tuple is no longer of interest to any transaction. The space it occupies must be reclaimed for reuse by new tuples, to avoid diff --git a/doc/src/sgml/ref/analyze.sgml b/doc/src/sgml/ref/analyze.sgml index 70e172790b..dba4c1befa 100644 --- a/doc/src/sgml/ref/analyze.sgml +++ b/doc/src/sgml/ref/analyze.sgml @@ -1,5 +1,5 @@ @@ -125,12 +125,12 @@ ANALYZE [ VERBOSE ] [ table [ (VACUUM and ANALYZE - once a day during a low-usage time of day. + strategy is to run + and ANALYZE once a day during a low-usage time of day. - Unlike , + Unlike VACUUM FULL, ANALYZE requires only a read lock on the target table, so it can run in parallel with other activity on the table. diff --git a/doc/src/sgml/ref/vacuum.sgml b/doc/src/sgml/ref/vacuum.sgml index aa55dfa74c..35394662f9 100644 --- a/doc/src/sgml/ref/vacuum.sgml +++ b/doc/src/sgml/ref/vacuum.sgml @@ -1,5 +1,5 @@ @@ -207,8 +207,7 @@ NOTICE: Index index: Pages 28; intended usage is in connection with preparation of user-defined template databases, or other databases that are completely read-only and will not receive routine maintenance VACUUM operations. - See - for details. + See the Administrator's Guide for details. @@ -222,8 +221,7 @@ NOTICE: Index index: Pages 28; We recommend that active production databases be VACUUM-ed frequently (at least nightly), in order to - remove expired rows. After copying a large table into - Postgres or after deleting a large number + remove expired rows. After adding or deleting a large number of records, it may be a good idea to issue a VACUUM ANALYZE command for the affected table. This will update the system catalogs with @@ -254,19 +252,19 @@ NOTICE: Index index: Pages 28; regression=> VACUUM VERBOSE ANALYZE onek; NOTICE: --Relation onek-- -NOTICE: Pages 98: Changed 25, Reapped 74, Empty 0, New 0; - Tup 1000: Vac 3000, Crash 0, UnUsed 0, MinLen 188, MaxLen 188; - Re-using: Free/Avail. Space 586952/586952; EndEmpty/Avail. Pages 0/74. - Elapsed 0/0 sec. -NOTICE: Index onek_stringu1: Pages 28; Tuples 1000: Deleted 3000. Elapsed 0/0 sec. -NOTICE: Index onek_hundred: Pages 12; Tuples 1000: Deleted 3000. Elapsed 0/0 sec. -NOTICE: Index onek_unique2: Pages 19; Tuples 1000: Deleted 3000. Elapsed 0/0 sec. -NOTICE: Index onek_unique1: Pages 17; Tuples 1000: Deleted 3000. Elapsed 0/0 sec. -NOTICE: Rel onek: Pages: 98 --> 25; Tuple(s) moved: 1000. Elapsed 0/1 sec. -NOTICE: Index onek_stringu1: Pages 28; Tuples 1000: Deleted 1000. Elapsed 0/0 sec. -NOTICE: Index onek_hundred: Pages 12; Tuples 1000: Deleted 1000. Elapsed 0/0 sec. -NOTICE: Index onek_unique2: Pages 19; Tuples 1000: Deleted 1000. Elapsed 0/0 sec. -NOTICE: Index onek_unique1: Pages 17; Tuples 1000: Deleted 1000. Elapsed 0/0 sec. +NOTICE: Index onek_unique1: Pages 14; Tuples 1000: Deleted 3000. + CPU 0.00s/0.11u sec elapsed 0.12 sec. +NOTICE: Index onek_unique2: Pages 16; Tuples 1000: Deleted 3000. + CPU 0.00s/0.10u sec elapsed 0.10 sec. +NOTICE: Index onek_hundred: Pages 13; Tuples 1000: Deleted 3000. + CPU 0.00s/0.10u sec elapsed 0.10 sec. +NOTICE: Index onek_stringu1: Pages 31; Tuples 1000: Deleted 3000. + CPU 0.01s/0.09u sec elapsed 0.10 sec. +NOTICE: Removed 3000 tuples in 70 pages. + CPU 0.02s/0.04u sec elapsed 0.07 sec. +NOTICE: Pages 94: Changed 0, Empty 0; Tup 1000: Vac 3000, Keep 0, UnUsed 0. + Total CPU 0.05s/0.45u sec elapsed 0.59 sec. +NOTICE: Analyzing onek VACUUM