E4654 Cmd Rej: Error issuing TST-DISK request

Error occurred while accessing disk during tst-disk.

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)