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Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 9eedab652df..3071c8eace4 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -11597,6 +11597,34 @@ LOG: CleanUpLock: deleting: lock(0xb7acd844) id(24688,24696,0,0,0,1) </listitem> </varlistentry> + <varlistentry id="guc-logical-decoding-mode" xreflabel="logical_decoding_mode"> + <term><varname>logical_decoding_mode</varname> (<type>enum</type>) + <indexterm> + <primary><varname>logical_decoding_mode</varname> configuration parameter</primary> + </indexterm> + </term> + <listitem> + <para> + Allows streaming or serializing changes immediately in logical decoding. + The allowed values of <varname>logical_decoding_mode</varname> are + <literal>buffered</literal> and <literal>immediate</literal>. When set + to <literal>immediate</literal>, stream each change if + <literal>streaming</literal> option (see optional parameters set by + <link linkend="sql-createsubscription"><command>CREATE SUBSCRIPTION</command></link>) + is enabled, otherwise, serialize each change. When set to + <literal>buffered</literal>, which is the default, decoding will stream + or serialize changes when <varname>logical_decoding_work_mem</varname> + is reached. + </para> + <para> + This parameter is intended to be used to test logical decoding and + replication of large transactions for which otherwise we need to + generate the changes till <varname>logical_decoding_work_mem</varname> + is reached. + </para> + </listitem> + </varlistentry> + </variablelist> </sect1> <sect1 id="runtime-config-short"> |