Hi
I had a environment which is 11g R2 RAC and have 15 database running on it.
Some are very big double digit terabytes and so rman backup to TSM tape library
is taking long time. We worked with TSM and got dedicated vlan backup interface
but it is not behaving correctly as sometime backup work good but another
backup after one backup take 5-6 time more. If using regular interphase the
performance is constant. Os level backup using dedicated gigabit vlan backup
interface is having not issue. Only RMAN backup is the issue. Can someone
share any experience as how to monitor and trace the issue. Ticket was opened
with Oracle support but they found nothing on both OS (Using OEL) and Database
(11.2.0.4). TSM team saying that OS level backup has no issue and it is only
rRMAN which is having issue. Moreover RMAN work good sometime but having
intermittent issue.
So if someone share how they think this can be handled or any of their
experience.
TIA Sanjay