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Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 4e8c982dd59..c9e0ec2c021 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -2092,6 +2092,15 @@ include_dir 'conf.d' </para> <para> + When this feature is enabled, freed space at the end of a relation + cannot be released to the operating system, since that could remove + information needed to detect the <literal>snapshot too old</> + condition. All space allocated to a relation remains associated with + that relation for reuse only within that relation unless explicitly + freed (for example, with <command>VACUUM FULL</>). + </para> + + <para> This setting does not attempt to guarantee that an error will be generated under any particular circumstances. In fact, if the correct results can be generated from (for example) a cursor which |