Migrating Oracle Single Instance to RAC in Oracle 11g R2

In this tutorial i am show you How to Convert oracle single instance to multipal instance [ RAC ]

You can convert single to multipal instance through may way like

1.  DBCA
2. IMPORT/EXPORT 
3.  Manual
4.  Streams and Datapump
5. Grid Control
6. RConfig  and some more..

Here i am show you 1^st one that is DBCA
  It's some steps as given below

1. Connect with your running database as a sys user with sysdba privileges .
2. Start your database [ If your database is close ].
3. Take a database backup. [ Because of your doing convert your database single instance to multipal instance in this time may be resize any some failure at that time it will be helpful to doing a restore operation and come back ].
4. Start DBCA.
5. Then Create a template of your current running database.

• Start DBCA.