Tomcat啟動專案出現com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector錯誤
今天一回到工作室就聽說我們的專案掛了，趕緊開啟遠端伺服器看看什麼問題，結果是：
2015-6-22 0:02:49 com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector run
警告: com[email protected]1862e6 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
2015-6-22 0:07:56 com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector run
警告: com
Managed Threads: 3
Active Threads: 3
Active Tasks:
[email protected] (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0)
[email protected] (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2)
[email protected]
Pending Tasks:
[email protected]
Pool thread stack traces:
Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0,5,main]
java.lang.Object.wait(Native Method)
java.lang.Object.wait(Object.java:485)
java.net.InetAddress.checkLookupTable(InetAddress.java:1266)
java.net.InetAddress.getAddressFromNameService(InetAddress.java:1189)
java.net.InetAddress.getAllByName0(InetAddress.java:1153)
java.net.InetAddress.getAllByName(InetAddress.java:1083)
java.net.InetAddress.getAllByName(InetAddress.java:1019)
java.net.InetAddress.getByName(InetAddress.java:969)
java.net.InetSocketAddress.<init>(InetSocketAddress.java:124)
java.net.Socket.<init>(Socket.java:180)
com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:366)
com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1178)
com.microsoft.sqlserver.jdbc.SQLServerConnection.loginWithoutFailover(SQLServerConnection.java:1054)
com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:758)
com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:842)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2,5,main]
java.lang.Object.wait(Native Method)
java.lang.Object.wait(Object.java:485)
java.net.InetAddress.checkLookupTable(InetAddress.java:1266)
java.net.InetAddress.getAddressFromNameService(InetAddress.java:1189)
java.net.InetAddress.getAllByName0(InetAddress.java:1153)
java.net.InetAddress.getAllByName(InetAddress.java:1083)
java.net.InetAddress.getAllByName(InetAddress.java:1019)
java.net.InetAddress.getByName(InetAddress.java:969)
java.net.InetSocketAddress.<init>(InetSocketAddress.java:124)
java.net.Socket.<init>(Socket.java:180)
com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:366)
com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1178)
com.microsoft.sqlserver.jdbc.SQLServerConnection.loginWithoutFailover(SQLServerConnection.java:1054)
com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:758)
com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:842)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1,5,main]
java.lang.Object.wait(Native Method)
java.lang.Object.wait(Object.java:485)
java.net.InetAddress.checkLookupTable(InetAddress.java:1266)
java.net.InetAddress.getAddressFromNameService(InetAddress.java:1189)
java.net.InetAddress.getAllByName0(InetAddress.java:1153)
java.net.InetAddress.getAllByName(InetAddress.java:1083)
java.net.InetAddress.getAllByName(InetAddress.java:1019)
java.net.InetAddress.getByName(InetAddress.java:969)
java.net.InetSocketAddress.<init>(InetSocketAddress.java:124)
java.net.Socket.<init>(Socket.java:180)
com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:366)
com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1178)
com.microsoft.sqlserver.jdbc.SQLServerConnection.loginWithoutFailover(SQLServerConnection.java:1054)
com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:758)
com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:842)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
一開始有點納悶，一直好好的怎麼會突然報錯，而且是SQL的連線問題，就是說並不是使用者錯誤操作而是專案配置出了錯，於是仔細查看了專案的配置和導包情況，發現配置並未被修改，而且JDBC包也沒有被誤刪，那是什麼情況呢？
上網找了一下，大多都說是配置的密碼啊什麼之類出錯，但我這裡並沒有錯呢。。。
然後看到一個大神的微博上寫他是因為資料庫沒有建立對應的database才出錯的，由此找到靈感，想了想莫非是專案找不到資料庫裡面的對應的database？
但配置又沒錯，資料庫又早已建好而且這個專案運行了一個學期之久了都沒問題。。。
於是想到了難道是與資料庫驗證有關？
重新開啟遠端伺服器裡面的SQL Server，發現登入身份驗證不知道被誰改成了“windows 身份驗證”了，然後我就把他改為“SQL Server 身份驗證”，使用者名稱為“sa”，密碼也寫好，登入驗證確認一下，最後重啟Tomcat，發現正常開啟了！！
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