Oracle ZFS Storage Appliance Administration Manual page 634

Configuring Oracle Direct NFS (dNFS)
...<br/>
}
Image copy restore:
■
run
{<br/>
...<br/>
}
Performing an incrementally applied backup requires reading an incremental backup set and
writing to an image copy. To tune buffers for incrementally applied backups, run the following:
run
{<br/>
sql 'alter system set "_backup_disk_bufcnt"=64';<br/>
sql 'alter system set "_backup_disk_bufsz"=1048576';<br/>
sql 'alter system set "_backup_file_bufcnt"=64';<br/>
sql 'alter system set "_backup_file_bufsz"=1048576';<br/>
allocate channel...
...<br/>
recover copy of database;
}
Creating Dedicated Services for Oracle RMAN Operations
Two services dedicated to Oracle RMAN processing can be configured to optimize
management of load balancing, high availability, and upgrades. These services can be evenly
load balanced over all the nodes of an Oracle SPARC SuperCluster system. Availability and
performance can be optimized by configuring the services to run on a preferred instance while
preparing them to fail over to any instance in the cluster. If these services are configured,
upgrading a one-quarter or one-half rack Oracle SPARC SuperCluster system does not require
changing the connect string of the Oracle RMAN run block.
The srvctl utility is used to install services for Oracle RMAN processing. The following code
fragment shows how to create two services evenly distributed over a four-node cluster that are
634 Oracle ZFS Storage Appliance Administration Guide, Release OS8.6.x • September 2016
sql 'alter system set "_backup_file_bufsz"=1048576';<br/>
allocate channel...
backup as copy database;
sql 'alter system set "_backup_file_bufcnt"=64';<br/>
sql 'alter system set "_backup_file_bufsz"=1048576';<br/>
allocate channel...
restore database;