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Add monitoring function pg_last_xact_replay_timestamp.

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Fujii Masao, with a little wordsmithing by me.
This commit is contained in:
Robert Haas
2010-11-09 22:39:43 -05:00
parent 844ed5dc97
commit 7ba6e4f0e0
5 changed files with 41 additions and 1 deletions
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19
doc/src/sgml/func.sgml
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@ -13551,6 +13551,9 @@ postgres=# SELECT * FROM pg_xlogfile_name_offset(pg_stop_backup());
<indexterm>
<primary>pg_last_xlog_replay_location</primary>
</indexterm>
<indexterm>
<primary>pg_last_xact_replay_timestamp</primary>
</indexterm>
<para>
The functions shown in <xref
@ -13605,6 +13608,22 @@ postgres=# SELECT * FROM pg_xlogfile_name_offset(pg_stop_backup());
the function returns NULL.
</entry>
</row>
<row>
<entry>
<literal><function>pg_last_xact_replay_timestamp()</function></literal>
</entry>
<entry><type>timestamp with time zone</type></entry>
<entry>Get timestamp of last transaction replayed during recovery.
This is the time at which the commit or abort WAL record for that
transaction was generated.
If no transactions have been replayed during recovery, this function
returns NULL. Otherwise, if recovery is still in progress this will
increase monotonically. If recovery has completed then this value will
remain static at the value of the last transaction applied during that
recovery. When the server has been started normally without recovery
the function returns NULL.
</entry>
</row>
</tbody>
</tgroup>
</table>