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Diffstat (limited to 'doc/src/sgml/logicaldecoding.sgml')
| -rw-r--r-- | doc/src/sgml/logicaldecoding.sgml | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/doc/src/sgml/logicaldecoding.sgml b/doc/src/sgml/logicaldecoding.sgml index 6455664cb4f..85c55d64125 100644 --- a/doc/src/sgml/logicaldecoding.sgml +++ b/doc/src/sgml/logicaldecoding.sgml @@ -1228,5 +1228,29 @@ stream_commit_cb(...); <-- commit of the streamed transaction that name pattern will not be decoded as a two-phase commit transaction. </para> + <para> + The users that want to decode prepared transactions need to be careful about + below mentioned points: + + <itemizedlist> + <listitem> + <para> + If the prepared transaction has locked [user] catalog tables exclusively + then decoding prepare can block till the main transaction is committed. + </para> + </listitem> + + <listitem> + <para> + The logical replication solution that builds distributed two phase commit + using this feature can deadlock if the prepared transaction has locked + [user] catalog tables exclusively. They need to inform users to not have + locks on catalog tables (via explicit <command>LOCK</command> command) in + such transactions. + </para> + </listitem> + </itemizedlist> + </para> + </sect1> </chapter> |