On Mon, Jun 8, 2009 at 12:28 AM, Lutz Steinborn<l.steinborn@xxxxxxxx> wrote: > Hi, > > can anybody tell me how to get rid of nonremovable row versions ? > I know what those rows coming from long running transactions. But I can't see > any long running transactions in pg_locks and all postgres processes are idle. > How else can I check if transaction in process ? > > > I don't have any idea from where those long running transaction are comming > because we are stopping/starting our apllications every 2-3 days. And its not > the nature of our applications to establish long running transactions. I think you misunderstand nonremoveable rows. A demonstration: postgres=# create table test (id int); CREATE TABLE postgres=# insert into test values (1),(2),(3); INSERT 0 3 postgres=# vacuum verbose test; INFO: vacuuming "public.test" INFO: "test": found 0 removable, 3 nonremovable row versions in 1 pages DETAIL: 0 dead row versions cannot be removed yet. There were 0 unused item pointers. 1 pages contain useful free space. 0 pages are entirely empty. CPU 0.00s/0.00u sec elapsed 0.00 sec. VACUUM It's not just old transactions, it's current data as well. > > We are using postgresql 8.1.4. You really should be running 8.1.17. -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
