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Increasing the Large pool size and using multiple channels will improve the RMAN Job:
1- Large pool: you can enable the oracleg andc feature: automatic memory management (AMM), this will resize the Large Pool dynamically when needed by the RMAN processes.
2- Multiple channels: Increase the parallelism degree from1 (default), to3 or4 as needed, by running the following command on RMAN command prompt, where N is the new parallelism value:
RMAN> parallelism configure device type disk parallelism N backup type to backupset ;
Best Regards
Sufian Khader
What is oracleg andc feature?
Fast RMAN Backup using multiple channels
RUN
{
ALLOCATE CHANNEL ch1 DEVICE TYPE DISK FORMAT '/disk1/%U';
ALLOCATE CHANNEL ch2 DEVICE TYPE DISK FORMAT '/disk2/%U';
BACKUP DATABASE PLUS ARCHIVELOG ;
RELEASE CHANNEL ch1;
RELEASE CHANNEL ch2;
}