I have to do in command line ?

Create database database_name;

ALTER USER your_user WITH SUPERUSER;

psql database_name < dump.sql

ALTER DATABASE database_name OWNER TO your_user;

yes

i think in your case you have to do that last code for setting the owner

Actually I used this command to create database psql -h ip -d database name -U openpg -f D:\backup\dump.sql

can you use the above code for making backup, i think it will work smoothly

I changed Owner of the database in PG admin and my issue solved. Thanks every one...

Can you explain the steps to restore? So that I can identify in which step i did mistake.