C3P0访问数据库死锁，com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@128e59b3 -- APPARENT

最新推荐文章于 2023-09-19 09:34:34 发布

一生气就写BUG

最新推荐文章于 2023-09-19 09:34:34 发布

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CC 4.0 BY-SA版权

分类专栏：数据库文章标签： MySQL c3p0 数据库死锁

本文链接：https://blog.youkuaiyun.com/qq_34091223/article/details/80525745

博客详细记录了使用C3P0数据库连接池时遇到的死锁问题，错误表现为APPARENT DEADLOCK。问题源于尝试创建数据库连接失败，经过排查发现是由于配置文件中数据库名拼写错误导致的。解决方法是修正配置文件中的数据库名，确保与实际数据库名称一致。

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错误信息：

com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@128e59b3 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!

com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@128e59b3 -- APPARENT DEADLOCK!!! Complete Status:
Managed Threads: 3
Active Threads: 3
Active Tasks:
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@3d573675 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@6ce37178 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@452ab60d (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1)
Pending Tasks:
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@3d5b50e6
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@39bb2da6
Pool thread stack traces:
Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0,5,RMI Runtime]
java.lang.Thread.sleep(Native Method)
com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2376)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2306)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:423)
com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)