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File Attachments:
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1.
borked.txt (40 kB)
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Environment:
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Tomcat 5.5, Hibernate 3.2.5, MySQL 4.1.11a-4sarge, c3p0 0.9.1
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I run a pretty busy site and every 24 hours or so, the system completely locks up and I have to restart tomcat. I investigated and the problem occurs in c3p0 which I use for my connection pooling. I attached a file containing the stack traces (obtained with JConsole) of some of the http processor threads when the system locks up. Using JConsole, I also tried to run softResetAllUsers() on the pooled datasource when the system is locked up and that fixes the issue as well.
In the change log for c3p0 0.9.1.2, they mention a fix of a deadlock issue so I tried the new version and the problem doesn't occur anymore.
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Description
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I run a pretty busy site and every 24 hours or so, the system completely locks up and I have to restart tomcat. I investigated and the problem occurs in c3p0 which I use for my connection pooling. I attached a file containing the stack traces (obtained with JConsole) of some of the http processor threads when the system locks up. Using JConsole, I also tried to run softResetAllUsers() on the pooled datasource when the system is locked up and that fixes the issue as well.
In the change log for c3p0 0.9.1.2, they mention a fix of a deadlock issue so I tried the new version and the problem doesn't occur anymore.
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Show » |
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Task
Open
Minor
Update c3p0 to 0.9.1.2