tnsping from 10.2 works against 11.2 listener, but tnsping from 11.1 and 11.2 does not
I have a 11.2 server and 11.2, 11.1 and 10.2 clients, all on the same machine, on Windows 7.
TNS Listener 11.2 is running.
The problem is that tnsping from the 10.2 client works, while calling tnsping from the 11.2 and 11.1 clients produces the error "TNS-12541: TNS:no listener"
C:\>C:\oracle\product\10.2.0\client_1\BIN\tnsping demg
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 12-APR-2
011 15:55:10
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
C:\oracle\product\10.2.0\client_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = HOSTNAME.domain)
(PORT = 1522)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE