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doc: clarify that logical slots track transaction activity

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Previously it only mentioned WAL retention.

Discussion: https://postgr.es/m/pexmenhqptw5h4ma4qasz3cvjtynivxprqifgghdjtmkxdig2g@djg7bk2p6pts

Backpatch-through: master
This commit is contained in:
Bruce Momjian
2025-11-14 10:45:59 -05:00
parent 43e6929bb2
commit 4c00960772
1 changed files with 3 additions and 2 deletions
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doc/src/sgml/logical-replication.sgml
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@@ -225,8 +225,9 @@
</para> </para>
<para> <para>
By default a new subscription creates a logical replication slot on the By default a new subscription creates a logical replication slot on
publisher and then uses this slot to preserve necessary WAL (see <xref the publisher and then uses this slot to track relevant transaction
activity and preserve necessary WAL (see <xref
linkend="streaming-replication-slots"/>). Additional replication linkend="streaming-replication-slots"/>). Additional replication
slots may be required for the initial data synchronization of slots may be required for the initial data synchronization of
pre-existing table data and those will be dropped at the end of data pre-existing table data and those will be dropped at the end of data