jconsole观察c3p0，发现不停地有阻塞?报错
c3p0有时候会报错，导致容器重新启动，服务挂掉。
使用jconsole进行监控，线程里面信息显示如下：
名称： C3P0PooledConnectionPoolManager[identityToken->1hgf4eq8z1z3fxm1jik78a|92992c]-HelperThread-#0
状态：TIMED_WAITING 在 com.mchange.v2.async.ThreadPoolAsynchronousRunner@1877fa7 上阻塞总数：463,725 等待总数： 473,434
堆栈追踪：
java.lang.Object.wait(Native Method)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:635)
谁知道为什么会不断地阻塞？这种情况正常么？
tomcat日志报错信息：
2013-12-11 09:23:07 [com.mchange.v2.async.ThreadPoolAsynchronousRunner]-[WARN] com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@177bb7a -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
2013-12-11 09:23:07 [com.mchange.v2.async.ThreadPoolAsynchronousRunner]-[WARN] com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@177bb7a -- APPARENT DEADLOCK!!! Complete Status:
Managed Threads: 3
Active Threads: 3
Active Tasks:
com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@276565
on thread: C3P0PooledConnectionPoolManager[identityToken->1hgf4eq8y1jdz3or1h42r0d|13a6057]-HelperThread-#1
com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@71fc3b
on thread: C3P0PooledConnectionPoolManager[identityToken->1hgf4eq8y1jdz3or1h42r0d|13a6057]-HelperThread-#2
com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@16689d1
on thread: C3P0PooledConnectionPoolManager[identityToken->1hgf4eq8y1jdz3or1h42r0d|13a6057]-HelperThread-#0
Pending Tasks:
com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@e23387
写回答
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https://developer.aliyun.com/profile/5yerqm5bn5yqg?spm=a2c6h.12873639.0.0.6eae304abcjaIB<spanstyle="font-family:微软雅黑,Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">APPARENTDEADLOCK!!! 死锁.看看死锁锁哪里了现象是死锁，其实数据库没死锁，线程池死锁，还有jconsole监控的数据，c3p0连接池的问题么？@177bb7a看看这个地址被谁拿着呢典型的死锁这个改个配置就好了
2020-06-22 13:43:30赞同 展开评论 打赏
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