in the
Symantec NetBackup ™ for
Oracle Administrator's Guide
...
Failover VIP exists and backup is load balanced
In this configuration, the NetBackup master server can always use the failover
vipname to reach an active host to run the backup script. However, becauseRMAN
allocates the channels on both hosts, the NetBackup media server must connect
back to the correct host to obtain the data for each request. Hence, the backup
images are stored under two different client names
Failover VIP is not available, and backup is load balanced, one policy
with custom script
A load-balanced backup without a failover vipname must overcome the combined
challenges of the preceding configurations. Because a failover vipname does not
exist, the NetBackup scheduler must attempt to execute the backup script on both
hosts and the script must start RMAN on only one of the hosts. Because RMAN
may allocate channels on both instances, the user-directed requests must present
host specific names so that the connect-back from the NetBackup media server
is able to retrieve the data from the correct host.
