這是報錯原因：
警告: Connection has been abandoned PooledConnection[oracle.jdbc.driver.T4CConnection@36583eaf]:java.lang.Exception at org.apache.tomcat.jdbc.pool.ConnectionPool.getThreadDump(ConnectionPool.java:1096) at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:735) at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:664) at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:482) at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:156) at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:116) at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:103) at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:560) at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:245) at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:141) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321) at org.apache.naming.NamingContext.lookup(NamingContext.java:848) at org.apache.naming.NamingContext.lookup(NamingContext.java:173) at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1110) at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.java:689) at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:273) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:750) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.startup.Catalina.start(Catalina.java:693) 1: 排查過jdk版本（jdk1.7）與資料庫驅動(ojdbc6)的匹配；telnet測驗資料庫埠也是通的；資料庫測驗也是連通的！
2: 清空過快取，重啟也不行
3: 之前還好好的，就是資料源連通不了，kill掉tomcat行程，就無法重啟應用了，重啟一直警告報錯！
求大神指導
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