doc: Update the layout of "Viewing Statistics" section.

This commit updates the "Viewing Statistics" section more like
the existing catalogs chapter.

- Change its layout so that an introductory paragrap is put above
   the table for each statistics view. Previously the explanations
   were below the tables.

- Separate each view to different section and add index terms for them.

Author: Fujii Masao
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/6f8a482c-b3fa-4ed9-21c3-6d222a2cb87d@oss.nttdata.com

doc/src/sgml/catalogs.sgml

@@ -10455,8 +10455,9 @@ SCRAM-SHA-256$<replaceable>&lt;iteration count&gt;</replaceable>:<replaceable>&l
 
   <para>
    The <structfield>pid</structfield> column can be joined to the
-   <structfield>pid</structfield> column of the <link
+   <structfield>pid</structfield> column of the
-   linkend="pg-stat-activity-view"><structname>pg_stat_activity</structname></link>
+   <link linkend="monitoring-pg-stat-activity-view">
+   <structname>pg_stat_activity</structname></link>
    view to get more
    information on the session holding or awaiting each lock,
    for example

doc/src/sgml/config.sgml

@@ -3889,9 +3889,9 @@ restore_command = 'copy "C:\\server\\archivedir\\%f" "%p"'  # Windows
         The synchronous standbys will be those whose names appear
         in this list, and
         that are both currently connected and streaming data in real-time
-        (as shown by a state of <literal>streaming</literal> in the <link
+        (as shown by a state of <literal>streaming</literal> in the
-        linkend="pg-stat-replication-view"><literal>pg_stat_replication</literal></link>
+        <link linkend="monitoring-pg-stat-replication-view">
-        view).
+        <structname>pg_stat_replication</structname></link> view).
         Specifying more than one synchronous standby can allow for very high
         availability and protection against data loss.
        </para>
@@ -4244,8 +4244,8 @@ ANY <replaceable class="parameter">num_sync</replaceable> ( <replaceable class="
        Specifies the minimum frequency for the WAL receiver
        process on the standby to send information about replication progress
        to the primary or upstream standby, where it can be seen using the
-       <link
+       <link linkend="monitoring-pg-stat-replication-view">
-       linkend="pg-stat-replication-view"><literal>pg_stat_replication</literal></link>
+       <structname>pg_stat_replication</structname></link>
        view.  The standby will report
        the last write-ahead log location it has written, the last position it
        has flushed to disk, and the last position it has applied.
@@ -6694,8 +6694,10 @@ local0.*    /var/log/postgresql
 
          <para>
           The backend type corresponds to the column
-          <structfield>backend_type</structfield> in the view <xref
+          <structfield>backend_type</structfield> in the view
-          linkend="pg-stat-activity-view"/>, but additional types can appear
+          <link linkend="monitoring-pg-stat-activity-view">
+          <structname>pg_stat_activity</structname></link>,
+          but additional types can appear
           in the log that don't show in that view.
          </para>
 
@@ -7191,7 +7193,8 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
         platforms.  You can use the <xref linkend="pgtesttiming"/> tool to
         measure the overhead of timing on your system.
         I/O timing information is
-        displayed in <xref linkend="pg-stat-database-view"/>, in the output of
+        displayed in <link linkend="monitoring-pg-stat-database-view">
+        <structname>pg_stat_database</structname></link>, in the output of
         <xref linkend="sql-explain"/> when the <literal>BUFFERS</literal> option is
         used, and by <xref linkend="pgstatstatements"/>.  Only superusers can
         change this setting.

doc/src/sgml/high-availability.sgml

@@ -895,7 +895,8 @@ primary_conninfo = 'host=192.168.1.50 port=5432 user=foo password=foopass'
     </para>
     <para>
      You can retrieve a list of WAL sender processes via the
-     <xref linkend="pg-stat-replication-view"/> view. Large differences between
+     <link linkend="monitoring-pg-stat-replication-view"><structname>
+     pg_stat_replication</structname></link> view. Large differences between
      <function>pg_current_wal_lsn</function> and the view's <literal>sent_lsn</literal> field
      might indicate that the master server is under heavy load, while
      differences between <literal>sent_lsn</literal> and
@@ -904,7 +905,8 @@ primary_conninfo = 'host=192.168.1.50 port=5432 user=foo password=foopass'
     </para>
     <para>
      On a hot standby, the status of the WAL receiver process can be retrieved
-     via the <xref linkend="pg-stat-wal-receiver-view"/> view.  A large
+     via the <link linkend="monitoring-pg-stat-wal-receiver-view">
+     <structname>pg_stat_wal_receiver</structname></link> view.  A large
      difference between <function>pg_last_wal_replay_lsn</function> and the
      view's <literal>flushed_lsn</literal> indicates that WAL is being
      received faster than it can be replayed.

doc/src/sgml/logical-replication.sgml

@@ -495,7 +495,8 @@
 
   <para>
    The monitoring information about subscription is visible in
-   <link linkend="pg-stat-subscription"><literal>pg_stat_subscription</literal></link>.
+   <link linkend="monitoring-pg-stat-subscription">
+   <structname>pg_stat_subscription</structname></link>.
    This view contains one row for every subscription worker.  A subscription
    can have zero or more active subscription workers depending on its state.
   </para>

doc/src/sgml/logicaldecoding.sgml

@@ -347,7 +347,8 @@ $ pg_recvlogical -d postgres --slot=test --drop-slot
    <para>
     The <link linkend="view-pg-replication-slots"><structname>pg_replication_slots</structname></link>
     view and the
-    <link linkend="pg-stat-replication-view"><structname>pg_stat_replication</structname></link>
+    <link linkend="monitoring-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.

doc/src/sgml/monitoring.sgml

@@ -300,7 +300,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry>
        One row per server process, showing information related to
        the current activity of that process, such as state and current query.
-       See <xref linkend="pg-stat-activity-view"/> for details.
+       See <link linkend="monitoring-pg-stat-activity-view">
+       <structname>pg_stat_activity</structname></link> for details.
       </entry>
      </row>
 
@@ -308,7 +309,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry><structname>pg_stat_replication</structname><indexterm><primary>pg_stat_replication</primary></indexterm></entry>
       <entry>One row per WAL sender process, showing statistics about
        replication to that sender's connected standby server.
-       See <xref linkend="pg-stat-replication-view"/> for details.
+       See <link linkend="monitoring-pg-stat-replication-view">
+       <structname>pg_stat_replication</structname></link> for details.
       </entry>
      </row>
 
@@ -316,7 +318,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry><structname>pg_stat_wal_receiver</structname><indexterm><primary>pg_stat_wal_receiver</primary></indexterm></entry>
       <entry>Only one row, showing statistics about the WAL receiver from
        that receiver's connected server.
-       See <xref linkend="pg-stat-wal-receiver-view"/> for details.
+       See <link linkend="monitoring-pg-stat-wal-receiver-view">
+       <structname>pg_stat_wal_receiver</structname></link> for details.
       </entry>
      </row>
 
@@ -324,7 +327,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry><structname>pg_stat_subscription</structname><indexterm><primary>pg_stat_subscription</primary></indexterm></entry>
       <entry>At least one row per subscription, showing information about
        the subscription workers.
-       See <xref linkend="pg-stat-subscription"/> for details.
+       See <link linkend="monitoring-pg-stat-subscription">
+       <structname>pg_stat_subscription</structname></link> for details.
       </entry>
      </row>
 
@@ -332,7 +336,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry><structname>pg_stat_ssl</structname><indexterm><primary>pg_stat_ssl</primary></indexterm></entry>
       <entry>One row per connection (regular and replication), showing information about
        SSL used on this connection.
-       See <xref linkend="pg-stat-ssl-view"/> for details.
+       See <link linkend="monitoring-pg-stat-ssl-view">
+       <structname>pg_stat_ssl</structname></link> for details.
       </entry>
      </row>
 
@@ -340,7 +345,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry><structname>pg_stat_gssapi</structname><indexterm><primary>pg_stat_gssapi</primary></indexterm></entry>
       <entry>One row per connection (regular and replication), showing information about
        GSSAPI authentication and encryption used on this connection.
-       See <xref linkend="pg-stat-gssapi-view"/> for details.
+       See <link linkend="monitoring-pg-stat-gssapi-view">
+       <structname>pg_stat_gssapi</structname></link> for details.
       </entry>
      </row>
 
@@ -404,7 +410,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry><structname>pg_stat_archiver</structname><indexterm><primary>pg_stat_archiver</primary></indexterm></entry>
       <entry>One row only, showing statistics about the
        WAL archiver process's activity. See
-       <xref linkend="pg-stat-archiver-view"/> for details.
+       <link linkend="monitoring-pg-stat-archiver-view">
+       <structname>pg_stat_archiver</structname></link> for details.
       </entry>
      </row>
 
@@ -412,14 +419,16 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry><structname>pg_stat_bgwriter</structname><indexterm><primary>pg_stat_bgwriter</primary></indexterm></entry>
       <entry>One row only, showing statistics about the
        background writer process's activity. See
-       <xref linkend="pg-stat-bgwriter-view"/> for details.
+       <link linkend="monitoring-pg-stat-bgwriter-view">
+       <structname>pg_stat_bgwriter</structname></link> for details.
      </entry>
      </row>
 
      <row>
       <entry><structname>pg_stat_database</structname><indexterm><primary>pg_stat_database</primary></indexterm></entry>
       <entry>One row per database, showing database-wide statistics. See
-       <xref linkend="pg-stat-database-view"/> for details.
+       <link linkend="monitoring-pg-stat-database-view">
+       <structname>pg_stat_database</structname></link> for details.
       </entry>
      </row>
 
@@ -428,7 +437,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry>
        One row per database, showing database-wide statistics about
        query cancels due to conflict with recovery on standby servers.
-       See <xref linkend="pg-stat-database-conflicts-view"/> for details.
+       See <link linkend="monitoring-pg-stat-database-conflicts-view">
+       <structname>pg_stat_database_conflicts</structname></link> for details.
       </entry>
      </row>
 
@@ -437,7 +447,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry>
        One row for each table in the current database, showing statistics
        about accesses to that specific table.
-       See <xref linkend="pg-stat-all-tables-view"/> for details.
+       See <link linkend="monitoring-pg-stat-all-tables-view">
+       <structname>pg_stat_all_tables</structname></link> for details.
       </entry>
      </row>
 
@@ -479,7 +490,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry>
        One row for each index in the current database, showing statistics
        about accesses to that specific index.
-       See <xref linkend="pg-stat-all-indexes-view"/> for details.
+       See <link linkend="monitoring-pg-stat-all-indexes-view">
+       <structname>pg_stat_all_indexes</structname></link> for details.
       </entry>
      </row>
 
@@ -500,7 +512,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry>
        One row for each table in the current database, showing statistics
        about I/O on that specific table.
-       See <xref linkend="pg-statio-all-tables-view"/> for details.
+       See <link linkend="monitoring-pg-statio-all-tables-view">
+       <structname>pg_statio_all_tables</structname></link> for details.
       </entry>
      </row>
 
@@ -521,7 +534,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry>
        One row for each index in the current database,
        showing statistics about I/O on that specific index.
-       See <xref linkend="pg-statio-all-indexes-view"/> for details.
+       See <link linkend="monitoring-pg-statio-all-indexes-view">
+       <structname>pg_statio_all_indexes</structname></link> for details.
       </entry>
      </row>
 
@@ -542,7 +556,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
      <entry>
        One row for each sequence in the current database,
        showing statistics about I/O on that specific sequence.
-       See <xref linkend="pg-statio-all-sequences-view"/> for details.
+       See <link linkend="monitoring-pg-statio-all-sequences-view">
+       <structname>pg_statio_all_sequences</structname></link> for details.
      </entry>
      </row>
 
@@ -564,7 +579,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry>
        One row for each tracked function, showing statistics
        about executions of that function. See
-       <xref linkend="pg-stat-user-functions-view"/> for details.
+       <link linkend="monitoring-pg-stat-user-functions-view">
+       <structname>pg_stat_user_functions</structname></link> for details.
       </entry>
      </row>
 
@@ -578,7 +594,8 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
      <row>
       <entry><structname>pg_stat_slru</structname><indexterm><primary>pg_stat_slru</primary></indexterm></entry>
       <entry>One row per SLRU, showing statistics of operations. See
-       <xref linkend="pg-stat-slru-view"/> for details.
+       <link linkend="monitoring-pg-stat-slru-view">
+       <structname>pg_stat_slru</structname></link> for details.
       </entry>
      </row>
 
@@ -608,6 +625,20 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
    into the kernel's handling of I/O.
   </para>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-activity-view">
+  <title><structname>pg_stat_activity</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_activity</primary>
+  </indexterm>
+
+  <para>
+   The <structname>pg_stat_activity</structname> view will have one row
+   per server process, showing information related to
+   the current activity of that process.
+  </para>
 
   <table id="pg-stat-activity-view" xreflabel="pg_stat_activity">
    <title><structname>pg_stat_activity</structname> View</title>
@@ -889,12 +920,6 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
    </tgroup>
   </table>
 
-  <para>
-   The <structname>pg_stat_activity</structname> view will have one row
-   per server process, showing information related to
-   the current activity of that process.
-  </para>
-
   <note>
    <para>
     The <structfield>wait_event</structfield> and <structfield>state</structfield> columns are
@@ -2135,14 +2160,30 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
 
 <programlisting>
 SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event is NOT NULL;
- pid  | wait_event_type |  wait_event
+ pid  | wait_event_type | wait_event 
-------+-----------------+---------------
+------+-----------------+------------
  2540 | Lock            | relation
- 6644 | LWLock          | ProcArrayLock
+ 6644 | LWLock          | ProcArray
 (2 rows)
 </programlisting>
    </para>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-replication-view">
+  <title><structname>pg_stat_replication</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_replication</primary>
+  </indexterm>
+
+   <para>
+   The <structname>pg_stat_replication</structname> view will contain one row
+   per WAL sender process, showing statistics about replication to that
+   sender's connected standby server.  Only directly connected standbys are
+   listed; no information is available about downstream standby servers.
+  </para>
+
   <table id="pg-stat-replication-view" xreflabel="pg_stat_replication">
    <title><structname>pg_stat_replication</structname> View</title>
    <tgroup cols="1">
@@ -2457,13 +2498,6 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
-  <para>
-   The <structname>pg_stat_replication</structname> view will contain one row
-   per WAL sender process, showing statistics about replication to that
-   sender's connected standby server.  Only directly connected standbys are
-   listed; no information is available about downstream standby servers.
-  </para>
-
   <para>
    The lag times reported in the <structname>pg_stat_replication</structname>
    view are measurements of the time taken for recent WAL to be written,
@@ -2503,6 +2537,21 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </para>
   </note>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-wal-receiver-view">
+  <title><structname>pg_stat_wal_receiver</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_wal_receiver</primary>
+  </indexterm>
+
+  <para>
+   The <structname>pg_stat_wal_receiver</structname> view will contain only
+   one row, showing statistics about the WAL receiver from that receiver's
+   connected server.
+  </para>
+
   <table id="pg-stat-wal-receiver-view" xreflabel="pg_stat_wal_receiver">
    <title><structname>pg_stat_wal_receiver</structname> View</title>
    <tgroup cols="1">
@@ -2668,10 +2717,20 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-subscription">
+  <title><structname>pg_stat_subscription</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_subscription</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_stat_wal_receiver</structname> view will contain only
+   The <structname>pg_stat_subscription</structname> view will contain one
-   one row, showing statistics about the WAL receiver from that receiver's
+   row per subscription for main worker (with null PID if the worker is
-   connected server.
+   not running), and additional rows for workers handling the initial data
+   copy of the subscribed tables.
   </para>
 
   <table id="pg-stat-subscription" xreflabel="pg_stat_subscription">
@@ -2776,11 +2835,22 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-ssl-view">
+  <title><structname>pg_stat_ssl</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_ssl</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_stat_subscription</structname> view will contain one
+   The <structname>pg_stat_ssl</structname> view will contain one row per
-   row per subscription for main worker (with null PID if the worker is
+   backend or WAL sender process, showing statistics about SSL usage on
-   not running), and additional rows for workers handling the initial data
+   this connection. It can be joined to <structname>pg_stat_activity</structname>
-   copy of the subscribed tables.
+   or <structname>pg_stat_replication</structname> on the
+   <structfield>pid</structfield> column to get more details about the
+   connection.
   </para>
 
   <table id="pg-stat-ssl-view" xreflabel="pg_stat_ssl">
@@ -2896,11 +2966,20 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-gssapi-view">
+  <title><structname>pg_stat_gssapi</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_gssapi</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_stat_ssl</structname> view will contain one row per
+   The <structname>pg_stat_gssapi</structname> view will contain one row per
-   backend or WAL sender process, showing statistics about SSL usage on
+   backend, showing information about GSSAPI usage on this connection. It can
-   this connection. It can be joined to <structname>pg_stat_activity</structname>
+   be joined to <structname>pg_stat_activity</structname> or
-   or <structname>pg_stat_replication</structname> on the
+   <structname>pg_stat_replication</structname> on the
    <structfield>pid</structfield> column to get more details about the
    connection.
   </para>
@@ -2962,15 +3041,19 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
-  <para>
+ </sect2>
-   The <structname>pg_stat_gssapi</structname> view will contain one row per
-   backend, showing information about GSSAPI usage on this connection. It can
-   be joined to <structname>pg_stat_activity</structname> or
-   <structname>pg_stat_replication</structname> on the
-   <structfield>pid</structfield> column to get more details about the
-   connection.
-  </para>
 
+ <sect2 id="monitoring-pg-stat-archiver-view">
+  <title><structname>pg_stat_archiver</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_archiver</primary>
+  </indexterm>
+
+  <para>
+   The <structname>pg_stat_archiver</structname> view will always have a
+   single row, containing data about the archiver process of the cluster.
+  </para>
 
   <table id="pg-stat-archiver-view" xreflabel="pg_stat_archiver">
    <title><structname>pg_stat_archiver</structname> View</title>
@@ -3053,9 +3136,18 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-bgwriter-view">
+  <title><structname>pg_stat_bgwriter</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_bgwriter</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_stat_archiver</structname> view will always have a
+   The <structname>pg_stat_bgwriter</structname> view will always have a
-   single row, containing data about the archiver process of the cluster.
+   single row, containing global data for the cluster.
   </para>
 
   <table id="pg-stat-bgwriter-view" xreflabel="pg_stat_bgwriter">
@@ -3181,9 +3273,19 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-database-view">
+  <title><structname>pg_stat_database</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_database</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_stat_bgwriter</structname> view will always have a
+   The <structname>pg_stat_database</structname> view will contain one row
-   single row, containing global data for the cluster.
+   for each database in the cluster, plus one for shared objects, showing
+   database-wide statistics.
   </para>
 
   <table id="pg-stat-database-view" xreflabel="pg_stat_database">
@@ -3325,7 +3427,8 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
       <para>
        Number of queries canceled due to conflicts with recovery
        in this database. (Conflicts occur only on standby servers; see
-       <xref linkend="pg-stat-database-conflicts-view"/> for details.)
+       <link linkend="monitoring-pg-stat-database-conflicts-view">
+       <structname>pg_stat_database_conflicts</structname></link> for details.)
       </para></entry>
      </row>
 
@@ -3418,10 +3521,21 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-database-conflicts-view">
+  <title><structname>pg_stat_database_conflicts</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_database_conflicts</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_stat_database</structname> view will contain one row
+   The <structname>pg_stat_database_conflicts</structname> view will contain
-   for each database in the cluster, plus one for shared objects, showing
+   one row per database, showing database-wide statistics about
-   database-wide statistics.
+   query cancels occurring due to conflicts with recovery on standby servers.
+   This view will only contain information on standby servers, since
+   conflicts do not occur on master servers.
   </para>
 
   <table id="pg-stat-database-conflicts-view" xreflabel="pg_stat_database_conflicts">
@@ -3510,12 +3624,23 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-all-tables-view">
+  <title><structname>pg_stat_all_tables</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_all_tables</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_stat_database_conflicts</structname> view will contain
+   The <structname>pg_stat_all_tables</structname> view will contain
-   one row per database, showing database-wide statistics about
+   one row for each table in the current database (including TOAST
-   query cancels occurring due to conflicts with recovery on standby servers.
+   tables), showing statistics about accesses to that specific table. The
-   This view will only contain information on standby servers, since
+   <structname>pg_stat_user_tables</structname> and
-   conflicts do not occur on master servers.
+   <structname>pg_stat_sys_tables</structname> views
+   contain the same information,
+   but filtered to only show user and system tables respectively.
   </para>
 
   <table id="pg-stat-all-tables-view" xreflabel="pg_stat_all_tables">
@@ -3750,14 +3875,23 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-all-indexes-view">
+  <title><structname>pg_stat_all_indexes</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_all_indexes</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_stat_all_tables</structname> view will contain
+   The <structname>pg_stat_all_indexes</structname> view will contain
-   one row for each table in the current database (including TOAST
+   one row for each index in the current database,
-   tables), showing statistics about accesses to that specific table. The
+   showing statistics about accesses to that specific index. The
-   <structname>pg_stat_user_tables</structname> and
+   <structname>pg_stat_user_indexes</structname> and
-   <structname>pg_stat_sys_tables</structname> views
+   <structname>pg_stat_sys_indexes</structname> views
    contain the same information,
-   but filtered to only show user and system tables respectively.
+   but filtered to only show user and system indexes respectively.
   </para>
 
   <table id="pg-stat-all-indexes-view" xreflabel="pg_stat_all_indexes">
@@ -3851,16 +3985,6 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
-  <para>
-   The <structname>pg_stat_all_indexes</structname> view will contain
-   one row for each index in the current database,
-   showing statistics about accesses to that specific index. The
-   <structname>pg_stat_user_indexes</structname> and
-   <structname>pg_stat_sys_indexes</structname> views
-   contain the same information,
-   but filtered to only show user and system indexes respectively.
-  </para>
-
   <para>
    Indexes can be used by simple index scans, <quote>bitmap</quote> index scans,
    and the optimizer.  In a bitmap scan
@@ -3890,6 +4014,25 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </para>
   </note>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-statio-all-tables-view">
+  <title><structname>pg_statio_all_tables</structname></title>
+
+  <indexterm>
+   <primary>pg_statio_all_tables</primary>
+  </indexterm>
+
+  <para>
+   The <structname>pg_statio_all_tables</structname> view will contain
+   one row for each table in the current database (including TOAST
+   tables), showing statistics about I/O on that specific table. The
+   <structname>pg_statio_user_tables</structname> and
+   <structname>pg_statio_sys_tables</structname> views
+   contain the same information,
+   but filtered to only show user and system tables respectively.
+  </para>
+
   <table id="pg-statio-all-tables-view" xreflabel="pg_statio_all_tables">
    <title><structname>pg_statio_all_tables</structname> View</title>
    <tgroup cols="1">
@@ -4007,14 +4150,23 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-statio-all-indexes-view">
+  <title><structname>pg_statio_all_indexes</structname></title>
+
+  <indexterm>
+   <primary>pg_statio_all_indexes</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_statio_all_tables</structname> view will contain
+   The <structname>pg_statio_all_indexes</structname> view will contain
-   one row for each table in the current database (including TOAST
+   one row for each index in the current database,
-   tables), showing statistics about I/O on that specific table. The
+   showing statistics about I/O on that specific index. The
-   <structname>pg_statio_user_tables</structname> and
+   <structname>pg_statio_user_indexes</structname> and
-   <structname>pg_statio_sys_tables</structname> views
+   <structname>pg_statio_sys_indexes</structname> views
    contain the same information,
-   but filtered to only show user and system tables respectively.
+   but filtered to only show user and system indexes respectively.
   </para>
 
   <table id="pg-statio-all-indexes-view" xreflabel="pg_statio_all_indexes">
@@ -4098,14 +4250,19 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-statio-all-sequences-view">
+  <title><structname>pg_statio_all_sequences</structname></title>
+
+  <indexterm>
+   <primary>pg_statio_all_sequences</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_statio_all_indexes</structname> view will contain
+   The <structname>pg_statio_all_sequences</structname> view will contain
-   one row for each index in the current database,
+   one row for each sequence in the current database,
-   showing statistics about I/O on that specific index. The
+   showing statistics about I/O on that specific sequence.
-   <structname>pg_statio_user_indexes</structname> and
-   <structname>pg_statio_sys_indexes</structname> views
-   contain the same information,
-   but filtered to only show user and system indexes respectively.
   </para>
 
   <table id="pg-statio-all-sequences-view" xreflabel="pg_statio_all_sequences">
@@ -4171,10 +4328,20 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-user-functions-view">
+  <title><structname>pg_stat_user_functions</structname></title>
+
+  <indexterm>
+   <primary>pg_stat_user_functions</primary>
+  </indexterm>
+
   <para>
-   The <structname>pg_statio_all_sequences</structname> view will contain
+   The <structname>pg_stat_user_functions</structname> view will contain
-   one row for each sequence in the current database,
+   one row for each tracked function, showing statistics about executions of
-   showing statistics about I/O on that specific sequence.
+   that function.  The <xref linkend="guc-track-functions"/> parameter
+   controls exactly which functions are tracked.
   </para>
 
   <table id="pg-stat-user-functions-view" xreflabel="pg_stat_user_functions">
@@ -4251,10 +4418,19 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
+ </sect2>
+
+ <sect2 id="monitoring-pg-stat-slru-view">
+  <title><structname>pg_stat_slru</structname></title>
+
   <indexterm>
    <primary>SLRU</primary>
   </indexterm>
 
+  <indexterm>
+   <primary>pg_stat_slru</primary>
+  </indexterm>
+
   <para>
    <productname>PostgreSQL</productname> accesses certain on-disk information
    via <firstterm>SLRU</firstterm> (simple least-recently-used) caches.
@@ -4364,13 +4540,6 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
    </tgroup>
   </table>
 
-  <para>
-   The <structname>pg_stat_user_functions</structname> view will contain
-   one row for each tracked function, showing statistics about executions of
-   that function.  The <xref linkend="guc-track-functions"/> parameter
-   controls exactly which functions are tracked.
-  </para>
-
  </sect2>
 
  <sect2 id="monitoring-stats-functions">

doc/src/sgml/ref/initdb.sgml

@@ -219,7 +219,8 @@ PostgreSQL documentation
         may incur a noticeable performance penalty. If set, checksums
         are calculated for all objects, in all databases. All checksum
         failures will be reported in the
-        <xref linkend="pg-stat-database-view"/> view.
+        <link linkend="monitoring-pg-stat-database-view">
+        <structname>pg_stat_database</structname></link> view.
        </para>
       </listitem>
      </varlistentry>

doc/src/sgml/ref/pg_basebackup.sgml

@@ -533,7 +533,8 @@ PostgreSQL documentation
         in a non-zero exit status. However, the base backup will not be
         removed in such a case, as if the <option>--no-clean</option> option
         had been used.  Checksum verifications failures will also be reported
-        in the <xref linkend="pg-stat-database-view"/> view.
+        in the <link linkend="monitoring-pg-stat-database-view">
+        <structname>pg_stat_database</structname></link> view.
        </para>
       </listitem>
      </varlistentry>

doc/src/sgml/sslinfo.sgml

@@ -16,7 +16,8 @@
 
  <para>
   Some of the information available through this module can also be obtained
-  using the built-in system view <xref linkend="pg-stat-ssl-view"/>.
+  using the built-in system view <link linkend="monitoring-pg-stat-ssl-view">
+  <structname>pg_stat_ssl</structname></link>.
  </para>
 
  <para>