Last updated on FEBRUARY 01, 2017
Applies to:Oracle Database - Enterprise Edition - Version 184.108.40.206 and later
Information in this document applies to any platform.
Multiple databases are backed with the same tape library, but backup for only a few or a particular database gets failed with the below error.
Error / Problem Description
Exception [type: ACCESS_VIOLATION, UNABLE_TO_READ] [ADDR:0x10] [PC:0x4C3D9DFC, 000000004C3D9DFC]
ORA-07445: exception encountered: core dump [PC:0x4C3D9DFC] [ACCESS_VIOLATION] [ADDR:0x10] [PC:0x4C3D9DFC] [UNABLE_TO_READ] 
Trace file output:
Current Wait Stack:
0: waiting for 'Backup: MML create a backup piece' -->waitings for backup in MML layer.
=0x0, =0x0, =0x0
wait_id=1623378 seq_num=51457 snap_id=1
wait times: snap=34.930727 sec, exc=34.930727 sec, total=34.930727 sec -->waitings for backup in MML layer.
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