--- doc/src/sgml/monitoring.sgml.orig 2017-04-07 22:37:55.388708334 +0200 +++ doc/src/sgml/monitoring.sgml 2017-04-07 22:38:16.582047695 +0200 @@ -1275,6 +1275,7 @@ ProcArrayGroupUpdate Waiting for group leader to clear transaction id at transaction end. + SafeSnapshot Waiting for a snapshot for a READ ONLY DEFERRABLE transaction.