E4652 Cmd Rej: Error while reserving disk

The command could not reserve the disk-under-test; the disk is unresponsive.

Recovery

1. Make sure no other disk operation is in progress (audit, database backup, or database restore). If so, wait for the operation to complete.

2. Re-enter the command that generated this error message. If this error message appears again, contact My Oracle Support. See My Oracle Support (MOS)