Hi, It seems like connections aren't being closed properly. Some RedHat users have reported a need to set the LD_ASSUME_KERNEL parameter such that NPTL is not used and threading problems go away. I myself don't have experience with that, but if you search this list's archives for LD_ASSUME_KERNEL you'll see what I'm talking about.
>I'm sorry to bother again but I was wondering whether any of you has >some feedback about the following problem. Don't worry/apologize, you're not bothering anyone. Ask away. If someone doesn't feel like answering, they won't ;) >Examining the application log I only see a few exceptions caused by an >RDBMS shutdown. I am asking myself if this can be the cause of zombie >threads, but it seems strange to me. It could be, depending on your driver. If you're using connection pooling such as via DBCP, try adding a validation query to the pool's configuration. >Do you have any ideas? I may increase ThreadPool dimension, but when the >block occurred traffic was low and it doesn't seem to justify any change >on the configuration side. Is it a Tomcat issue? We are planning to >upgrade to 4.1.30 very soon, but could it be worth to go towards 4.1.31 >or 5.x.y (not really planned yet)? The block did not occur because traffic was high: I bet the hung connections accumulated over a long period: possibly even the six months you mentioned. It's definitely worth your time to test with Tomcat 5.0.28. Yoav This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
