database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-25 01:02:05 +03:00
Code Activity

Add VACUUM (DISABLE_PAGE_SKIPPING) for emergencies.

Browse Source 
If you really want to vacuum every single page in the relation,
regardless of apparent visibility status or anything else, you can use
this option.  In previous releases, this behavior could be achieved
using VACUUM (FREEZE), but because we can now recognize all-frozen
pages as not needing to be frozen again, that no longer works.  There
should be no need for routine use of this option, but maybe bugs or
disaster recovery will necessitate its use.

Patch by me, reviewed by Andres Freund.
This commit is contained in:
Robert Haas
2016-06-17 15:48:57 -04:00
parent 20eb2731b7
commit ede62e56fb
7 changed files with 97 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/test/regress/expected/vacuum.out
View File

@ -79,5 +79,6 @@ ERROR: ANALYZE cannot be executed from VACUUM or ANALYZE
CONTEXT: SQL function "do_analyze" statement 1
SQL function "wrap_do_analyze" statement 1
VACUUM FULL vactst;
VACUUM (DISABLE_PAGE_SKIPPING) vaccluster;
DROP TABLE vaccluster;
DROP TABLE vactst;

2
src/test/regress/sql/vacuum.sql
View File

@ -60,5 +60,7 @@ VACUUM FULL pg_database;
VACUUM FULL vaccluster;
VACUUM FULL vactst;
VACUUM (DISABLE_PAGE_SKIPPING) vaccluster;
DROP TABLE vaccluster;
DROP TABLE vactst;