`
eimhee
  • 浏览: 2156844 次
  • 性别: Icon_minigender_1
  • 来自: 北京
社区版块
存档分类
最新评论

c3p0 连接池APPARENT DEADLOCK

 
阅读更多
最近发现系统经常会出现APPARENT DEADLOCK 的错误,如下

DEBUG|16:15:07,278| GenericDao:568 - Hql:  FROM LoginSession l WHERE l.sessionToken = ?
DEBUG|16:15:09,905| GenericDao:568 - Hql:  FROM LoginSession l WHERE l.sessionToken = ?
WARN |16:15:23,125| ThreadPoolAsynchronousRunner:608 - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@649948aa -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
WARN |16:15:23,158| ThreadPoolAsynchronousRunner:624 - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@649948aa -- APPARENT DEADLOCK!!! Complete Status:
        Managed Threads: 3
        Active Threads: 3
        Active Tasks:


发现是参数maxStatements和numHelperThreads所致的,
maxStatement太大会导致这个异常,
可以调整maxStatements为一个小点的值, 然后增加numHelperThreads的数量, 就可以修复这个异常

来源:
http://laravel.iteye.com/
0
1
分享到:
评论

相关推荐

Global site tag (gtag.js) - Google Analytics