Exclude vacuum/autovacuum and backend sessions from activity statistics

Author: Roman Nikolaev

mamonsu/plugins/pgsql/oldest.py

@@ -19,7 +19,12 @@ class Oldest(Plugin):
     OldestQuerySql = """
 select
     extract(epoch from max(now() - xact_start))
-from pg_catalog.pg_stat_activity where pid not in (select pid from pg_stat_replication);
+from pg_catalog.pg_stat_activity 
+where 
+    pid not in (select pid from pg_stat_replication)
+    AND pid <> pg_backend_pid() 
+    AND query not ilike '%VACUUM%' 
+    HAVING extract(epoch from max(now() - xact_start))>0;
 """
 
     OldestQuerySql_bootstrap = """

mamonsu/tools/bootstrap/sql.py

@@ -70,7 +70,11 @@
     SELECT
         extract(epoch from max(now() - xact_start))
     FROM pg_catalog.pg_stat_activity
-    WHERE pid not in (select pid from pg_stat_replication)
+    WHERE 
+        pid not in (select pid from pg_stat_replication)
+        AND pid <> pg_backend_pid() 
+        AND query not ilike '%VACUUM%' 
+        HAVING extract(epoch from max(now() - xact_start))>0
 $$ LANGUAGE SQL SECURITY DEFINER;
 
 CREATE OR REPLACE FUNCTION public.mamonsu_count_{3}_files()