<entry align="center"><literal>X</literal></entry>

<entry align="center"><literal>-</literal></entry>

<entry align="center"><literal>-</literal></entry>

<entry align="center"></entry>

</row>

<row>

<entry align="left"><literal>CREATE USER MAPPING</literal></entry>

<para>

The <link linkend="view-pg-replication-slots"><structname>pg_replication_slots</structname></link>

view and the

<link linkend="monitoring-stats-views-table"><structname>pg_stat_replication</structname></link>

<link linkend="pg-stat-replication-view"><structname>pg_stat_replication</structname></link>

view provide information about the current state of replication slots and

streaming replication connections respectively. These views apply to both physical and

logical replication.

<listitem>

<para>

Increase <xref linkend="guc-max-wal-size"> and <xref

linkend="guc-checkpoint-timeout">; this reduces the frequency

linkend="guc-checkpoint-timeout">; this reduces the frequency

of checkpoints, but increases the storage requirements of

<filename>/pg_xlog</>.

</para>