Listener Does not Respond

Question

I am having an issue with a listener . All of a sudeen , listener stopped responding .
When I was doing lsnrctl stat , I was getting "TNS-01189" . When I reloaded the listener , I am getting the same error .
I am on 11g r2 on windows 2008 r2 64 bit .
Thanks in Advance.
C:\Users\Administrator>lsnrctl reload
LSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 18-OCT-2010 20:29
:20
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=198.6.432.35)(PORT=1521)
TNS-01189: The listener could not authenticate the user
C:\Users\Administrator>lsnrctl reload
LSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 18-OCT-2010 20:30
:35
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
The command completed successfully
C:\Users\Administrator>

Answer 1

01189, 00000, "The listener could not authenticate the user"
// *Cause: The user attempted to issue a privileged administrative command, but
// could not be successfully authenticated by the listener using the local OS
// authentication mechanism. This may occur due to one of the following
// reasons:
// 1. The user is running a version of LSNRCTL that is lower than the version
//    of the listener.
// 2. The user is attempting to administer the listener from a remote node.
// 3. The listener could not obtain the system resources needed to perform the
//    authentication.
// 4. The local network connection between the listener and LSNRCTL was
//    terminated unexpectedly during authentication message exchange, such as
//    if LSNRCTL program was suddenly aborted.
// 5. The communication between the listener and LSNRCTL is being intercepted
//    by a malicious user.
// 6. The software that the user is running is not following the authentication
//    protocol, indicating a malicious user.
// *Action: Make sure that administrative commands are issued using the LSNRCTL
// tool that is of a version equal or greater than the version of the listener,
// and that the tool and the listener are running on the same node. You can
// issue the VERSION command to find out the version of the listener.
// If a malicious user is suspected, use the information provided in
// the listener log file to determine the source and nature of the requests.
// Enable listener tracing for more information. If the error persists,
// contact Oracle Support Services.are you 100% CERTAIN that ORACLE_HOME is correct?
are there more than one ORACLE_HOME on this system?
Handle:      user11142794
Status Level:      Newbie
Registered:      May 7, 2009
Total Posts:      68
Total Questions:      33 (23 unresolved)
so many questions & so few answers.
Edited by: sb92075 on Oct 18, 2010 6:05 PM