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Commit1f1914b

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petergeogheganpull[bot]
authored andcommitted
Doc: update VACUUM VERBOSE freezing tip.
VACUUM VERBOSE/autovacuuming logging have reported on the number ofpages frozen by VACUUM since commitd977ffd added that capability.This information is directly related to relfrozenxid advancement, soupdate an older tip from the documentation about how relfrozenxid isreported on by the same instrumentation code. Now the tip directlymentions newly frozen pages, too.
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‎doc/src/sgml/maintenance.sgml

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@@ -643,8 +643,9 @@ SELECT datname, age(datfrozenxid) FROM pg_database;
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parameter is specified, <command>VACUUM</command> prints various
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statistics about the table. This includes information about how
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<structfield>relfrozenxid</structfield> and
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<structfield>relminmxid</structfield> advanced. The same details appear
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in the server log when autovacuum logging (controlled by <xref
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<structfield>relminmxid</structfield> advanced, and the number of
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newly frozen pages. The same details appear in the server log when
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autovacuum logging (controlled by <xref
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linkend="guc-log-autovacuum-min-duration"/>) reports on a
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<command>VACUUM</command> operation executed by autovacuum.
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</para>

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