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1 | 1 | <!-- |
2 | | -$PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.52 2005/12/0705:35:53 momjian Exp $ |
| 2 | +$PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.53 2005/12/0714:35:45 momjian Exp $ |
3 | 3 | --> |
4 | 4 |
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5 | 5 | <chapter id="maintenance"> |
@@ -142,8 +142,8 @@ $PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.52 2005/12/07 05:35:53 momj |
142 | 142 | just <command>VACUUM</command>, marks expired data in tables and |
143 | 143 | indexes for future reuse; it does <emphasis>not</emphasis> attempt |
144 | 144 | to reclaim the space used by this expired data unless the space is |
145 | | - at the end of the table and an exclusive lock can beobtainedeasily |
146 | | -on the table. Unused space at the start or middle of the file does |
| 145 | + at the end of the table and an exclusivetablelock can be easily |
| 146 | +obtained. Unused space at the start or middle of the file does |
147 | 147 | not result in the file being shortened and space returned to the |
148 | 148 | operating system. This variant of <command>VACUUM</command> can be |
149 | 149 | run concurrently with normal database operations. |
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