ORA-15042 Trying to Mount Diskgroup (Doc ID 1962288.1)

Last updated on JUNE 19, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 to 12.1.0.2 [Release 11.2 to 12.1]
Information in this document applies to any platform.
Checked for currency on 19-06-2016

Symptoms

On : 11.2.0.3 version, STORAGE

When attempting to mount diskgroup,
the following error occurs.

ERROR
-----------------------
ORA-15032: not all alterations performed
ORA-15040: diskgroup is incomplete
ORA-15042: ASM disk "72" is missing from group number "1"
ORA-15042: ASM disk "71" is missing from group number "1"
ORA-15042: ASM disk "70" is missing from group number "1"
ORA-15042: ASM disk "69" is missing from group number "1"
ORA-15042: ASM disk "68" is missing from group number "1"
ORA-15042: ASM disk "67" is missing from group number "1"
ORA-15042: ASM disk "66" is missing from group number "1"
ORA-15042: ASM disk "13" is missing from group number "1"
ORA-15042: ASM disk "12" is missing from group number "1"


STEPS
-----------------------
The issue can be reproduced at will with the following steps:
1. Reboot server.
2. Diskgroup will not auto mount.


BUSINESS IMPACT
-----------------------
The issue has the following business impact:
Due to this issue, users cannot mount diskgroup.

Changes

 System Administrators accidentally created duplicate disks and then when server rebooted both disks were discovered resulting in failure to mount the diskgroup

Cause

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