SQLPLUS throws ORA-12547 when invoked (Doc ID 552979.1)

Last updated on MAY 31, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Oracle 10.2 has been installed in a new Oracle_Home
Preparing to perform post-upgrade steps
SQLPLUS command fails with following error ...

$ sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Feb 5 10:04:01 2008
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-12547: TNS:lost contact
Enter user-name:

Cause

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