I wanted to let everyone know that I figured this out -- sort of. Seems I was trying this logged in using Remote Desktop (MS) while logged in as a user that wasn't Administrator, though part of the admin group. Something about that configuration is causing the error. When I went to the console, I was able to do a thread dump on any of the instances on the machine.
I can't test if it is RDP or user that's that problem, since this is a production system and I won't let Administrator login remotely. I might be able to use the other login on the console, but I will have to try that later. Jeff > -----Original Message----- > From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] > Sent: Tuesday, October 12, 2010 11:35 AM > To: Tomcat Users List > Subject: Error getting Thread dump on Windows > > Tomcat 5.5.17 (running as a service) > > Java JDK 1.5.0_06 (yes, I know, really old) > > Windows Server 2003 SP2 (up to date) > > > > I have a Tomcat instance (one of many) that appears to have some > hung/looping threads. > > I tried to use the system tray to take a thread dump (right-click, pick > thread dump) and I get an odd error from Windows: > > Window title: Application System Error > > Window contents: The system cannot file the file specified. Unable to > open the Event Mutex. > > > > Any clues? I've seen this sometimes on login (on another system) and > am > completely baffled. > > It occurs no matter which instance I am trying to dump. > > Jeff > > > > _______________________________________________________________________ > ___ > > Confidentiality Notice: This Transmission (including any attachments) > may contain information that is privileged, confidential, and exempt > from disclosure under applicable law. If the reader of this message is > not the intended recipient you are hereby notified that any > dissemination, distribution, or copying of this communication is > strictly prohibited. > > If you have received this transmission in error, please immediately > reply to the sender or telephone (512) 343-9100 and delete this > transmission from your system. __________________________________________________________________________ Confidentiality Notice: This Transmission (including any attachments) may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this transmission in error, please immediately reply to the sender or telephone (512) 343-9100 and delete this transmission from your system. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org