Oracle RAC : ASM instance startup failing with "terminating the instance due to error 482" in alert log

ASM instance startup failing with "terminating the instance due to error 482" in alert log

ASM instance alert log shows below error while starting the ASM instance on second node

Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x1994] [PC:0x43EFF99, kjbmprlst()+1369] [flags: 0x0, count: 1]

Errors in file /opt/app/oragrid/orabase/diag/asm/+asm/+ASM2/trace/+ASM2_lmd0_39620.trc  (incident=224081):

ORA-07445: exception encountered: core dump [kjbmprlst()+1369] [SIGSEGV] [ADDR:0x1994] [PC:0x43EFF99] [Address not mapped to object] []

Incident details in: /opt/app/oragrid/orabase/diag/asm/+asm/+ASM2/incident/incdir_224081/+ASM2_lmd0_39620_i224081.trc

Use ADRCI or Support Workbench to package the incident.

See Note 411.1 at My Oracle Support for error and packaging details.

Dumping diagnostic data in directory=[cdmp_20180131051633], requested by (instance=2, osid=39620 (LMD0)), summary=[incident=224081].

PMON (ospid: 39577): terminating the instance due to error 482

Fix :

The cluster_database parameter was changed to FALSE which was resulting in the ASM startup failures

Please run the below from the running cluster node making change to the ASM instance

SQL> alter system set cluster_database=TRUE scope=spfile sid='+ASM2';

System altered.

This should start your ASM instance now. I hope this resolves your issue.