such that this slot
       is not in danger of getting in state "lost".  It is NULL for lost
       slots, as well as if <varname>max_slot_wal_keep_size</varname>
       is <literal>-1</literal>.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>two_phase</structfield> <type>bool</type>
      </para>
      <para>
       True if the slot is enabled for decoding prepared transactions.  Always
       false for physical slots.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>two_phase_at</structfield> <type>pg_lsn</type>
      </para>
      <para>
       The address (<literal>LSN</literal>) from which the decoding of prepared
       transactions is enabled. <literal>NULL</literal> for logical slots
       where <structfield>two_phase</structfield> is false and for physical slots.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>inactive_since</structfield> <type>timestamptz</type>
      </para>
      <para>
        The time when the slot became inactive. <literal>NULL</literal> if the
        slot is currently being streamed. If the slot becomes invalid,
        this value will never be updated.
        For standby slots that are being synced from a
        primary server (whose <structfield>synced</structfield> field is
        <literal>true</literal>), the <structfield>inactive_since</structfield>
        indicates the time when slot synchronization (see <xref
        linkend="logicaldecoding-replication-slots-synchronization"/>)
        was most recently stopped.  <literal>NULL</literal> if the slot
        has always been synchronized. This helps standby slots track when
        synchronization was interrupted.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>conflicting</structfield> <type>bool</type>
      </para>
      <para>
       True if this logical slot conflicted with recovery (and so is now
       invalidated). When this column is true, check
       <structfield>invalidation_reason</structfield> column for the conflict
       reason. Always <literal>NULL</literal> for physical slots.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>invalidation_reason</structfield> <type>text</type>
      </para>
      <para>
       The reason for the slot's invalidation. It is set for both logical and
       physical slots. <literal>NULL</literal> if the slot is not invalidated.
       Possible values are:
       <itemizedlist spacing="compact">
        <listitem>
         <para>
          <literal>wal_removed</literal> means that the required WAL has been
          removed.
         </para>
        </listitem>
        <listitem>
         <para>
          <literal>rows_removed</literal> means that the required rows have
          been removed. It is set only for logical slots.
         </para>
        </listitem>
        <listitem>
         <para>
          <literal>wal_level_insufficient</literal> means that the
          primary doesn't have a <xref linkend="guc-wal-level"/> sufficient to
          perform logical decoding.  It is set only for logical slots.
         </para>
        </listitem>
        <listitem>
         <para>
          <literal>idle_timeout</literal> means that the slot has remained
          idle longer than the configured
          <xref linkend="guc-idle-replication-slot-timeout"/> duration.
         </para>
        </listitem>
       </itemizedlist>
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>failover</structfield> <type>bool</type>
      </para>
      <para>
       True if this