Netbackup 8.0 unable to release channel after restore is complete

We are taking backup of Oracle 12.0c running on Oracle Linux 7.4, and netbackup agent version is 8.0. Backup is successfully taken through intelligente policy, but while trying to restore this backup to an identical machine with same configration and different IP's at the end when restore is completed it gives error while releasing channel and strangly Netbackup Administration Console show the restore is successfull.