$PostgreSQL: pgsql/doc/src/sgml/backup.sgml,v 2.42 2004/08/04 17:37:09 tgl Exp $

<sect2 id="backup-online-caveats">

<title>Caveats</title>

<para>

At this writing, there are several limitations of the on-line backup

technique. These will probably be fixed in future releases.

<itemizedlist>

<listitem>

<para>

The effects of <command>CREATE DATABASE</>, <command>DROP DATABASE</>,

<command>CREATE TABLESPACE</>, and <command>DROP TABLESPACE</> are

not fully reflected in the WAL log. It is recommended that you take

a new base backup after performing one of these operations.

</para>

</listitem>

<listitem>

<para>

Operations on non-btree indexes (hash, R-tree, and GiST indexes) are

not presently WAL-logged, so replay will not update these index types.

The recommended workaround, if you use any non-btree indexes, is to

manually <command>REINDEX</> each such index after completing a

recovery operation.

</para>

</listitem>

</itemizedlist>

</para>

</sect2>