Mario Weilguni <roadrunner6@xxxxxx> wrote: >> yesterday I delete about 200 million rows of a table >> How can I release the space used by deleted rows? >> Without block the table. > vacuum does not reclaim space, just marks tuples dead. You need > vacuum full. VACUUM FULL will lock the table, blocking all other access, and it can run for quite a while. If you expect to be adding 200 million new rows to the table in the foreseeable future, a regular VACUUM (or autovacuum) will make that space available for reuse by that table. The space won't show in the file system; it will still be allocated to the database but available for new rows. -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
