I have installed Oracle Client 11g R2 Win64 on Windows 7 x64. However, running tnsping (without parameters) yields the following output:
C:\Users\stefan.moebius>tnsping
TNS Ping Utility for 64-bit Windows: Version 11.2.0.1.0 - Production on 01-APR-2011 17:06:17
Copyright (c) 1997, 2010, Oracle. All rights reserved.
TNS-03502: Message 3502 not found; No message file for product=NETWORK, facility=TNS
What's wrong?
I tried settings ORACLE_HOME, as that's mentioned around the net, but that didn't help. Looking at what tnsping is doing using ProcMon shows that it actually does find the file
C:\develop\oracle\product\11.2.0\client_1\network\mesg\nlus.msb