Connection To ASM Instance Fails With ORA-12547 (Doc ID 1351745.1)

Last updated on OCTOBER 31, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.2 and later
Information in this document applies to any platform.
***Checked for relevance on 21-Jun-2013***

Symptoms

While trying to startup CRS,ASM does not come up and ora.asm status is OFFLINE.
When try to connect to ASM instance from sqlplus it gives below error.

sqlplus "/ as sysasm"

SQL*Plus: Release 11.2.0.2.0 Production on Tue Aug 23 12:04:50 2011

Copyright (c) 1982, 2010, Oracle. All rights reserved.

ERROR:
ORA-12547: TNS:lost contact

Changes

Below parameters added in sqlnet.ora

SQLNET.ENCRYPTION_TYPES_SERVER={3DES168}
SQLNET.ENCRYPTION_SERVER=REQUIRED

Cause

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