diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/func.sgml | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 0f7154b76ab..968a9985527 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -28970,6 +28970,15 @@ postgres=# SELECT '0/0'::pg_lsn + pd.segment_number * ps.setting::int + :offset </para> <para> + <function>pg_wal_replay_wait</function> should be called on standby. + If a user calls <function>pg_wal_replay_wait</function> on primary, it + will error out. However, if <function>pg_wal_replay_wait</function> is + called on primary promoted from standby and <literal>target_lsn</literal> + was already replayed, then <function>pg_wal_replay_wait</function> just + exits immediately. + </para> + + <para> You can use <function>pg_wal_replay_wait</function> to wait for the <type>pg_lsn</type> value. For example, an application could update the <literal>movie</literal> table and get the <acronym>lsn</acronym> after |