Netbackup , TWS and RMAN

DB version: 11.2
OS : AIX
I have joined a new company where RMAN backups go to Tape using Veritas Netbackup and these backup jobs are scheduled using IBM TWS (Tivoli Work Scheduler).
Prior to joining this company, I have only worked with RMAN using crontab.
I realise that Veritas Netbackup is just a middle man between RMAN executable and the Tape. But I can see Netbackup parameters like NB_ORA_POLICY being created for the server hosting the DB. When I googled NB_ORA_POLICY , I learnt that it is related to schedules of the RMAN backup (on which day should the Full backup should run , on which day should the incremental backup should run , etc...).
So, what is the role of TWS work sheduler if we are specifying the schedules in the Netbackup?

So, what is the role of TWS work sheduler if we are specifying the schedules in the Netbackup? You have to ask the person(s) in your company, who decided to use the Tivoli scheduler. This is neither a requirement from Oracle nor Veritas.
Sometimes it's a company policy to use the SAME scheduler for all tasks,which require scheduling.
Werner

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