Dear Devrim; Thanks a lot, u r right. But it look like that now the postgresql has been crashed (really I do not know why suddenly I found it stop .. but what I expect that there were a lot of wrong queries are running). I am not sure if a block happened due to something wrong .. I ran yum remove postgresql postgresql-devel postgresql-server, also I remove the directory /var/lib/pgsl and I reinstall, then I ran again service postgresql initdb. But still I am not able to start the postgresql (it is giving fail). What could be the reason for the fail to start the postgresql? How I can do a complete remove for it (what other than pgsql directory need to be removed?) Where could be the problem? Appreciate ur kindly help. Regards Bilal -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin