Re: [GENERAL] Modified rows are not marked as dead and as such vacuum is unable to clean them up

=?UTF-8?B?VGFtw6FzIEFuZHLDoXMgS8OhbG3DoW4=?= <hello@tamaskalman.com> writes:
> we have a PostgreSQL 9.3.4 database with multiple large tables, that keep
> growing.
> Looking at the pg_stat of  the front runner table that is currently about 1
> Gb  big, it seems, that stale row data is not marked as dead after updates,

Have you checked for uncommitted prepared transactions?
If "select * from pg_prepared_xacts" finds anything, that's
probably your problem.

            regards, tom lane