On 23.09.2005 09:27, sandhya wrote:
> 1) To Display all the databases under Particular user
> 3) To Display the permissions of the users
> 4) To Display the tables and Access permissions of it under a database

start psql with -E option then type \? and choose what you need.

> 2) To Display the timings of login and logout of the databases of other users.

see the logging section in postgresql.conf


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Regards,
Hannes Dorbath