On Wed, Aug 7, 2013 at 2:46 AM, Vishalakshi Navaneethakrishnan <nvishalakshi@xxxxxxxxxx> wrote: > Daily once we are executing "Vacuum Freeze analyze" -- To prevent > transaction id wraparound > using this command > vacuumdb -F -z -h localhost -U postgres dbname It is not necessary to do. Autovacuum does it itself where and when needed. > Even sometimes autovacuum running on the databases and increase the load > (Above 200) very much and the server was unresponsive > > I have seen the autovacum worker process in top command, > While i executing pg_stat_activity as postgres user, i have seen the pid of > autovacuum process in the result but the query filed is "Empty" Was autovacuum the only process that you saw in pg_stat_activity? What OS do you use? Do you use huge pages? -- Kind regards, Sergey Konoplev PostgreSQL Consultant and DBA http://www.linkedin.com/in/grayhemp +1 (415) 867-9984, +7 (901) 903-0499, +7 (988) 888-1979 gray.ru@xxxxxxxxx -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general