Commitb661aea

committed

doc: warn pg_stat_reset() can cause vacuum/analyze problems

1 parent2f26cec commitb661aeaCopy full SHA for b661aea

File tree

+11

-0

lines changed

+11

-0

lines changed

Lines changed: 11 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -5180,6 +5180,17 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i`
`5180`	`5180`	`</tgroup>`
`5181`	`5181`	`</table>`
`5182`	`5182`
	`5183`	`+ <warning>`
	`5184`	`+ <para>`
	`5185`	`+ Using <function>pg_stat_reset()</function> also resets counters that`
	`5186`	`+ autovacuum uses to determine when to trigger a vacuum or an analyze.`
	`5187`	`+ Resetting these counters can cause autovacuum to not perform necessary`
	`5188`	`+ work, which can cause problems such as table bloat or out-dated`
	`5189`	`+ table statistics. A database-wide <command>ANALYZE</command> is`
	`5190`	`+ recommended after the statistics have been reset.`
	`5191`	`+ </para>`
	`5192`	`+ </warning>`
	`5193`	`+`
`5183`	`5194`	`<para>`
`5184`	`5195`	`<function>pg_stat_get_activity</function>, the underlying function of`
`5185`	`5196`	`the <structname>pg_stat_activity</structname> view, returns a set of records`

Comments

(0)