In the normal backup and recovery terms , COLD BACKUP is the backup taken when the database is completely down. Then how do we connect to database with RMAN when the database is down?
The RMAN differentiates between "inconsistent" and "consistent" backups on the basis of whether the database is OPEN or not during the Backup. It will not use the terms "COLD BACKUP" and "HOT BACKUP".
For consistance RMAN RAC backup :
Now we have the RMAN cold backup. Does it include online redo logs. How do we restore the RMAN backup taken earlier. Can we directly restore and open the database.
RMAN will not backup online redologs. So when you restore the database from the backup taken above , you cant directly open the database as you dont have the online redologs. You have to open the database with reset logs.
This article is an example to backup RAC database with ASM. When the RAC with ASM Storage provides the high availability , why should we think of cold backup !!!!!!. This articles is only for concepts purpose and the real time RAC backups with RMAN are completely different.
Hope it helps ....