Mention that transactions can complete in a different numeric order, for

PITR recovery.
This commit is contained in:
Bruce Momjian 2004-08-07 03:21:11 +00:00
parent ddb25082f3
commit a1c2ed7b02
1 changed files with 11 additions and 7 deletions

View File

@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/backup.sgml,v 2.42 2004/08/04 17:37:09 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/backup.sgml,v 2.43 2004/08/07 03:21:11 momjian Exp $
-->
<chapter id="backup">
<title>Backup and Restore</title>
@ -815,12 +815,16 @@ restore_command = 'cp /mnt/server/archivedir/%f %p'
<literal>recovery.conf</>. You can specify the stop point either by
date/time or by transaction ID. As of this writing only the date/time
option is very usable, since there are no tools to help you identify
which transaction ID to use. Note that the stop point must be after
the ending time of the backup (ie, the time of
<function>pg_stop_backup</>). You cannot use a base backup to recover
to a time when that backup was still going on. (To recover to such
a time, you must go back to your previous base backup and roll forward
from there.)
which transaction ID to use. Keep in mind that while transaction
IDs are asigned sequentially at transaction start, transactions can
complete in a different numeric order.
</para
<para>
Note that the stop point must be after the ending time of the backup
(ie, the time of <function>pg_stop_backup</>). You cannot use a base
backup to recover to a time when that backup was still going on. (To
recover to such a time, you must go back to your previous base backup
and roll forward from there.)
</para>
</sect2>