<entry role="catalog_table_entry"><para role="column_definition">
       <structfield>datid</structfield> <type>oid</type>
      </para>
      <para>
       OID of the database to which this backend is connected.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>datname</structfield> <type>name</type>
      </para>
      <para>
       Name of the database to which this backend is connected.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>relid</structfield> <type>oid</type>
      </para>
      <para>
       OID of the table being clustered.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>command</structfield> <type>text</type>
      </para>
      <para>
       The command that is running. Either <literal>CLUSTER</literal> or <literal>VACUUM FULL</literal>.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>phase</structfield> <type>text</type>
      </para>
      <para>
       Current processing phase. See <xref linkend="cluster-phases"/>.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>cluster_index_relid</structfield> <type>oid</type>
      </para>
      <para>
       If the table is being scanned using an index, this is the OID of the
       index being used; otherwise, it is zero.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>heap_tuples_scanned</structfield> <type>bigint</type>
      </para>
      <para>
       Number of heap tuples scanned.
       This counter only advances when the phase is
       <literal>seq scanning heap</literal>,
       <literal>index scanning heap</literal>
       or <literal>writing new heap</literal>.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>heap_tuples_written</structfield> <type>bigint</type>
      </para>
      <para>
       Number of heap tuples written.
       This counter only advances when the phase is
       <literal>seq scanning heap</literal>,
       <literal>index scanning heap</literal>
       or <literal>writing new heap</literal>.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>heap_blks_total</structfield> <type>bigint</type>
      </para>
      <para>
       Total number of heap blocks in the table.  This number is reported
       as of the beginning of <literal>seq scanning heap</literal>.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>heap_blks_scanned</structfield> <type>bigint</type>
      </para>
      <para>
       Number of heap blocks scanned.  This counter only advances when the
       phase is <literal>seq scanning heap</literal>.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>index_rebuild_count</structfield> <type>bigint</type>
      </para>
      <para>
       Number of indexes rebuilt.  This counter only advances when the phase
       is <literal>rebuilding index</literal>.
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>

  <table id="cluster-phases">
   <title>CLUSTER and VACUUM FULL Phases</title>
   <tgroup cols="2">
    <colspec colname="col1" colwidth="1*"/>
    <colspec colname="col2" colwidth="2*"/>
    <thead>
    <row>
      <entry>Phase</entry>
      <entry>Description</entry>
     </row>
    </thead>

   <tbody>
    <row>
     <entry><literal>initializing</literal></entry>