Unable To Start Database: ORA-15001, ORA-15055 (Doc ID 1448048.1)

Last updated on JULY 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.
***Checked for relevance on 11-Sep-2013***

Symptoms

Unable to start up the 11.1.0.7 RAC database instances:

alert_FHRUAT1.log:
~~~~~~~~~~~~~~~~~~
Mon Apr 09 23:27:45 2012
ASMB started with pid=43, OS id=13441
ORA-00210: cannot open the specified control file
ORA-00202: control file: '+DATA/fhruat/datafile/cntrl03.dbf'
ORA-17503: ksfdopn:2 Failed to open file +DATA/fhruat/datafile/cntrl03.dbf
ORA-15001: diskgroup "DATA" does not exist or is not mounted
ORA-15055: unable to connect to ASM instance
...


All ASM instances (clustered) are up and running and have all needed ASM disk groups mounted.

Changes

Upgraded the Grid Infrastructure (GI) home from 11.2.0.2.0 to 11.2.0.3.0.

Cause

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