From 8ee74b3f17ab3b9a4f18d585769ba8da05c96fc5 Mon Sep 17 00:00:00 2001 From: Laurenz Albe Date: Thu, 15 Jan 2026 23:37:00 +0100 Subject: [PATCH v2] Prevent ANALYZE from waiting for synchronous standbys If the cluster to upgrade has synchronous replication configured, "vacuumdb --analyze-only" will hang waiting for the feedback of a synchronous standby, but there is none during an upgrade. To prevent that, set "synchronous_commit" to "local" while optimizer statistics are being calculated. https://postgr.es/m/flat/d3f21029c8ea11f6a61cfb8045ac11480787411e.camel@cybertec.at --- pg_upgradecluster.d/analyze | 3 +++ 1 file changed, 3 insertions(+) diff --git a/pg_upgradecluster.d/analyze b/pg_upgradecluster.d/analyze index 6480b5e..2a8d145 100755 --- a/pg_upgradecluster.d/analyze +++ b/pg_upgradecluster.d/analyze @@ -19,6 +19,9 @@ case $newversion in ;; esac +# don't hang waiting for a synchronous standby server +export PGOPTIONS="$PGOPTIONS -csynchronous_commit=local" + case $newversion in 9.2|9.3) vacuumdb $flags --analyze-only -- 2.52.0