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Improve lazy vacuum wording.

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This commit is contained in:
Bruce Momjian 2005-12-07 14:35:45 +00:00
parent 9551ab2fe9
commit 823702be9d
1 changed files with 3 additions and 3 deletions
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6
doc/src/sgml/maintenance.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.52 2005/12/07 05:35:53 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.53 2005/12/07 14:35:45 momjian Exp $
-->
<chapter id="maintenance">
@ -142,8 +142,8 @@ $PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.52 2005/12/07 05:35:53 momj
just <command>VACUUM</command>, marks expired data in tables and
indexes for future reuse; it does <emphasis>not</emphasis> attempt
to reclaim the space used by this expired data unless the space is
at the end of the table and an exclusive lock can be obtained easily
on the table. Unused space at the start or middle of the file does
at the end of the table and an exclusive table lock can be easily
obtained. Unused space at the start or middle of the file does
not result in the file being shortened and space returned to the
operating system. This variant of <command>VACUUM</command> can be
run concurrently with normal database operations.