RMAN Session in Hung Status

Question

Hi ,
We have observed  few issue while backing up the  archive logs through tapes ( Symantec Backup). Backup team told us that they are not able to see the jobs at their end running , while we are triggering the backup . Later on we find lot of rman session active in the database ( 27 RMAN Session in v$session)
I have few question :
> If there are already rman session which are in hung state , Even if we trigger the new backup , Will that complete trigger or they will also went into the hug state. ( I think new session will also goes into the hung state) . Symantec backup team said they don't have any issue at their end.
>Generally we kill the all the backup processes at OS level ( ps -ef | grep rman & ps -ef | grep backup ) , Is that possible still few RMAN session doesn't get killed  from v$session. ( I am not sure about this , As per my understanding , if we kill any rman session at the OS level , it should be killed from the v$session)
Database Version : 11gR2
OS : AIX 6.1
BACKUP : Symantec backup
REgards
Sourabh GUpta

Answer 1

Hi ,
We are just trying to find the RCA for this , I have few doubts based on that I will troubleshoot this :
> If there are already rman session which are in hung state , Even if we fire  the new backup , Will that complete  or they will also went into the hug state. ( I think new session will also goes into the hung state) . Symantec backup team said they don't have any issue at their end.
>Generally we kill the all the backup processes at OS level ( ps -ef | grep rman & ps -ef | grep backup ) , Is that possible still few RMAN session doesn't get killed  from v$session. ( I am not sure about this , As per my understanding , if we kill any rman session at the OS level , it should be killed from the v$session)
Regards
Sourabh Gupta