Hope doing well.
sir, i am new in oracle. i have created one database name grand1 and i have created one user and given all priviliges to that user.
now i want to take backup of the database and restore in another system which has oracle installed.
but i don't know how to do that.
could you explain in simple way?
As usual you haven't
a) bothered to give sufficient information, such as your database version
b) bothered to check the documentation (http://www.oracle.com/pls/db112/search?remark=quick_search&word=backup)
c) bothered to look into oracle feature to know if you're posting in the correct forum. Are you sure you want to be backing up a high availability (HA) oracle database?
You'd probably be better asking in the General forum: General Questions
or the RMAN (Recovery Manager) forum: Recovery Manager (RMAN)
I suspect from your brief description you're not wanting to backup a HA style database setup. (http://www.oracle.com/technetwork/database/availability/index.html)