I have to take backup of my database but when I right click DB and then backup The button for backup is disabled. Similarly in existing database ,not able to restore because the Restore button too disabled. I was working fine till the time I created a new database.
How do they get enabled?
I had the same problem in ubuntu 14.04. It was necessary to install both postgresql-client-common (which contains pg_dump and pg_restore) and postgresql-client packages.