I am trying to figure out why the "RMAN delete" is so slow, and if it is caused by NFS file system mounted on Linux server. Please forgive me to ask such basic question here. I am not Oracle DBA, but a NFS storage engineer.
I was told that DBA issued RMAN delete command to delete some old RMAN backups on a NFS file system which contains backups and backups only. The deletion is so slow as if hanging there, and he has to kill it after long time.
I read some documents, and seem to me that RMAN delete could also update the backup repository or Database if there is no repository configured. Is that true? If yes, then since the repository or DB are located on the other file system, so, the slowness could be caused by that file system while updating the repository or DB.
Further, DBA also sometime feel extremely slowness while shutting down the database. My understanding is that would not access NFS containing backups. Is that true? If yes, that's going to be the other evidence that the slowness may not be caused by NFS.
So, my question
If it is true that "RMAN delete" will also update the backup repository?
Will shutting DB down process somehow access NFS file system containing backups
Thank you!