This parameter can only be set at server start.

</para>

<para>

In <literal>minimal</> level, WAL-logging of some bulk operations, like

<command>CREATE INDEX</>, <command>CLUSTER</> and <command>COPY</> on

a table that was created or truncated in the same transaction can be

safely skipped, which can make those operations much faster (see

<xref linkend="populate-pitr">). But minimal WAL does not contain

In <literal>minimal</> level, WAL-logging of some bulk

operations can be safely skipped, which can make those

operations much faster (see <xref linkend="populate-pitr">).

Operations in which this optimization can be applied include:

<simplelist>

<item>CREATE TABLE AS</item>

<item>CREATE INDEX</item>

<item>CLUSTER</item>

<item>COPY into tables that were created or truncated in the same

transaction

</simplelist>

But minimal WAL does not contain

enough information to reconstruct the data from a base backup and the

WAL logs, so either <literal>archive</> or <literal>hot_standby</>

level must be used to enable