Fix documentation of pg_start_backup and pg_stop_backup functions.

MasaoFujii · MasaoFujii · commit b804c1837b55 · 2019-04-23T02:41:58.000+09:00
This commit adds the description that "non-exclusive" pg_start_backup and pg_stop_backup can be executed even during recovery. Previously it was wrongly documented that those functions are not allowed to be executed during recovery. Back-patch to 9.6 where non-exclusive backup API was added. Discussion: https://postgr.es/m/CAHGQGwEuAYrEX7Yhmf2MCrTK81HDkkg-JqsOUh8zw6+zYC5zzw@mail.gmail.com
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
@@ -19835,6 +19835,8 @@ SELECT set_config('log_statement_stats', 'off', false);
     The functions shown in <xref
     linkend="functions-admin-backup-table"/> assist in making on-line backups.
     These functions cannot be executed during recovery (except
+    non-exclusive <function>pg_start_backup</function>,
+    non-exclusive <function>pg_stop_backup</function>,
     <function>pg_is_in_backup</function>, <function>pg_backup_start_time</function>
     and <function>pg_wal_lsn_diff</function>).
    </para>
