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after upgrade to 11GR2: ORA-12154: TNS:could not resolve the connect identifier specified

edited Sep 20, 2010 10:28AM in Database Networking (MOSC) 6 commentsAnswered
 Hi,

I upgraded a 10.2.03 database on linux 86_64 to 11GR2, everything went smoothly without errors.

But we I try to connect the database by spacifying the database name, I got error: ORA-12154:

These are some info:

[oraprd@sternum upgrade2]$ sqlplus scott/tiger@prod10c2;

SQL*Plus: Release 11.2.0.1.0 Production on Mon Sep 20 12:13:04 2010

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified

The ORACLE_HOME and ORACLE_SID are set correctly, and the listner is up for 11G

[oraprd@sternum upgrade2]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 20-SEP-2010 12:12:21

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

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