My Oracle Support Banner

ORA-12547: TNS:lost contact error while starting ASM after upgrade from to in a standalone environment (Doc ID 2267272.1)

Last updated on MAY 04, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 11.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.


On Standalone setup, after upgrading from to, ASM is not able to start, and hitting the following error:

SQL> sqlplus

SQL*Plus: Release Production on Thu May 11 23:53:13 2017

Copyright (c) 1982, 2014, Oracle. All rights reserved.

Enter user-name: / as sysdba
ORA-12547: TNS:lost contact

Enter user-name:



 Upgrade from to


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.