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commit    fd079193d24ce81fdc31fbba687cadc70609c44d
Author:   Amit Kapila <akapila@postgresql.org>
Date:     Wed Jun 21 04:54:41 2023 +0000
First released in: 16.0, 11.21, 12.16, 13.12, 14.9, 15.4

    Fix the errhint message and docs for drop subscription failure.
    
    The existing errhint message and docs were missing the fact that we can't
    disassociate from the slot unless the subscription is disabled.
    
    Author: Robert Sjöblom, Peter Smith
    Reviewed-by: Peter Eisentraut, Amit Kapila
    Backpatch-through: 11
    Discussion: https://postgr.es/m/807bdf85-61ea-88e2-5712-6d9fcd4eabff@fortnox.se


 doc/src/sgml/ref/drop_subscription.sgml | 8 +++++---
 src/backend/commands/subscriptioncmds.c | 3 ++-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/doc/src/sgml/ref/drop_subscription.sgml b/doc/src/sgml/ref/drop_subscription.sgml
index aee96155463..d79f137c1e8 100644
--- a/doc/src/sgml/ref/drop_subscription.sgml
+++ b/doc/src/sgml/ref/drop_subscription.sgml
@@ -85,9 +85,11 @@ DROP SUBSCRIPTION [ IF EXISTS ] <replaceable class="parameter">name</replaceable
    for the subscription on the remote host are released.  If this fails,
    either because the remote host is not reachable or because the remote
    replication slot cannot be dropped or does not exist or never existed,
-   the <command>DROP SUBSCRIPTION</command> command will fail.  To proceed in
-   this situation, disassociate the subscription from the replication slot by
-   executing <literal>ALTER SUBSCRIPTION ... SET (slot_name = NONE)</literal>.
+   the <command>DROP SUBSCRIPTION</command> command will fail.  To proceed
+   in this situation, first disable the subscription by executing
+   <literal>ALTER SUBSCRIPTION ... DISABLE</literal>, and then disassociate
+   it from the replication slot by executing
+   <literal>ALTER SUBSCRIPTION ... SET (slot_name = NONE)</literal>.
    After that, <command>DROP SUBSCRIPTION</command> will no longer attempt any
    actions on a remote host.  Note that if the remote replication slot still
    exists, it (and any related table synchronization slots) should then be
diff --git a/src/backend/commands/subscriptioncmds.c b/src/backend/commands/subscriptioncmds.c
index 83cb67e7a59..404b3965596 100644
--- a/src/backend/commands/subscriptioncmds.c
+++ b/src/backend/commands/subscriptioncmds.c
@@ -1860,7 +1860,8 @@ ReportSlotConnectionError(List *rstates, Oid subid, char *slotname, char *err)
 			 errmsg("could not connect to publisher when attempting to drop replication slot \"%s\": %s",
 					slotname, err),
 	/* translator: %s is an SQL ALTER command */
-			 errhint("Use %s to disassociate the subscription from the slot.",
+			 errhint("Use %s to disable the subscription, and then use %s to disassociate it from the slot.",
+					 "ALTER SUBSCRIPTION ... DISABLE",
 					 "ALTER SUBSCRIPTION ... SET (slot_name = NONE)")));
 }
 


[parent: c2f974fffbec]