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-rw-r--r--doc/src/sgml/system-views.sgml7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/src/sgml/system-views.sgml b/doc/src/sgml/system-views.sgml
index 3c8dca8ca30..7ed617170f2 100644
--- a/doc/src/sgml/system-views.sgml
+++ b/doc/src/sgml/system-views.sgml
@@ -2530,6 +2530,13 @@ SELECT * FROM pg_locks pl LEFT JOIN pg_prepared_xacts ppx
<para>
The time since the slot has become inactive.
<literal>NULL</literal> if the slot is currently being used.
+ Note that for slots on the standby that are being synced from a
+ primary server (whose <structfield>synced</structfield> field is
+ <literal>true</literal>), the
+ <structfield>inactive_since</structfield> indicates the last
+ synchronization (see
+ <xref linkend="logicaldecoding-replication-slots-synchronization"/>)
+ time.
</para></entry>
</row>