postgres
diff --git a/‎src/backend/access/transam/multixact.c
Lines changed: 2 additions & 1 deletion b/‎src/backend/access/transam/multixact.c
Lines changed: 2 additions & 1 deletion
@@ -779,7 +779,8 @@ MultiXactIdCreateFromMembers(int nmembers, MultiXactMember *members)
 			if (ISUPDATE_from_mxstatus(members[i].status))
 			{
 				if (has_update)
-					elog(ERROR, "new multixact has more than one updating member");
+					elog(ERROR, "new multixact has more than one updating member: %s",
+						 mxid_to_string(InvalidMultiXactId, nmembers, members));
 				has_update = true;
 			}
 		}
Original file line number	Diff line number	Diff line change
`@@ -779,7 +779,8 @@ MultiXactIdCreateFromMembers(int nmembers, MultiXactMember *members)`
`779`	`779`	`if (ISUPDATE_from_mxstatus(members[i].status))`
`780`	`780`	`{`
`781`	`781`	`if (has_update)`
`782`		`- elog(ERROR, "new multixact has more than one updating member");`
	`782`	`+ elog(ERROR, "new multixact has more than one updating member: %s",`
	`783`	`+ mxid_to_string(InvalidMultiXactId, nmembers, members));`
`783`	`784`	`has_update = true;`
`784`	`785`	`}`
`785`	`786`	`}`