diff --git a/doc/src/sgml/logicaldecoding.sgml b/doc/src/sgml/logicaldecoding.sgml index 4c2ca12445e..35202a789cf 100644 --- a/doc/src/sgml/logicaldecoding.sgml +++ b/doc/src/sgml/logicaldecoding.sgml @@ -754,16 +754,18 @@ OutputPluginWrite(ctx, true); In synchronous replication setup, a deadlock can happen, if the transaction - has locked [user] catalog tables exclusively. This is because logical decoding of - transactions can lock catalog tables to access them. To avoid this users - must refrain from taking an exclusive lock on [user] catalog tables. This can - happen in the following ways: + has locked [user] catalog tables exclusively. See + for information on user + catalog tables. This is because logical decoding of transactions can lock + catalog tables to access them. To avoid this users must refrain from taking + an exclusive lock on [user] catalog tables. This can happen in the following + ways: Issuing an explicit LOCK on pg_class - (or any other catalog table) in a transaction. + in a transaction. @@ -781,6 +783,10 @@ OutputPluginWrite(ctx, true); + + Note that these commands that can cause deadlock apply to not only explicitly + indicated system catalog tables above but also to any other [user] catalog + table.