UEK is not yet supported by SDU/SMO/SMSAP team. Oracle 10.2.0.3 may also be an issue?
I cannot tell the other details of your config however there is also qualification work being done on some newer Oracle VM versions as well.
If this is a business critical system(s), you need to work with your account team to gather exact version information for these components. They can then get time/date estimates for when this will be supported.
Perhaps the best way to get this started in to send them the output from a smo operation or smo profile dump (this will automatically gather a snapdrive.dc). The version information can be extracted from those logs.
Some kind of solution found and tested few times. It's seems to related to DNFS and how Oracle works. I do not want to "hack" SMO but the solution in this matter seems to be when there is to interfaces involved. One is connected to the another filer and second interface is connected to the another filer. Everything works when SDU makes changes on fstab file and the same changed are transporterted dynamically to Direct NFS. Like documentation says that after cloning I need to do that manually, but it seems that it's too late on this matter.
SNapmanager for Oracle 3.2 Direct NFS RMAN operation hangs
How this works on latest Direct NFS Oracle 18.104.22.168. I will request also SR to Oracle.
SDU will add the mount infromation to /etc/fstab. So this is monitored and when event happens those changes will be added also into oranfstab then this will work. Not working situation & tested:
If this is not done those snapshots are cloned and mountet, but RMAN can not handle this situation, because it's target DB operation. I tested this when RMAN hangs that I killed the rman process on the system (after that hanging session, SMO reposrts that backup is ok, even catalog never finished. Then the filesystem on that snapshot was mounted by SMO and then try the same command to RMAN "catalog datafile copy..." RMAN hangs again waiting for disk io. When these mounts are added dynamically filer-path, local-path and export into oranfstab file the RMAN catalog operation works just fine.
Re: SNapmanager for Oracle 3.2 Direct NFS RMAN operation hangs