*** Apologies for re-posting this e-mail **** Dear group, I have a strange problem. apologies if this is the wrong place, however as a first option i am posting here. I have to subscribe to other special mailing lists. I have two databases in my system. In firstdb i am having the following problem: firstdb=# \d targets ERROR: could not access status of transaction 362 DETAIL: could not open file "/var/lib/pgsql/data/pg_clog/0000": No such file or directory when I vacuumed it: $ vacuumdb firstdb vacuumdb: vacuuming of database "firstdb" failed: ERROR: could not access status of transaction 11 DETAIL: could not open file "/var/lib/pgsql/data/pg_clog/0000": No such file or directory Second problem: Issue with secondb - arraydb $ vacuumdb arraydb VACUUM Suspecting there is something going on with postgres, I wanted to take a backup of the arraydb. here is what I am doing: $ sudo pg_dump arraydb > arraydb_bcup_Aug_05_2006.dump $ ls -lh total 8.0K -rw-r--r-- 1 speri postgres 0 Aug 5 20:17 arradb_bcup_Aug_05_2006.out There is nothing in this. I created dumps long back and they are heavy. what could be the problem in the cases of first and second problems. looking forward to hear from experts eagerly. Thanks __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com