dbcp连接池获取oracle数据库连接时报错

给位大神，求助，我们的项目在测试环境运行时，启动后大约1个小时左右就会出现如下异常，貌似数据连接池取不到数据库连接了，这种是什么原因导致的，有遇到的吗，帮忙看看，谢谢！
运行环境：suse11，weblogic12c，dbcp3.0连接池，oracle11g数据库
异常如下：

<2015-4-29 下午02时54分49秒 CST> <Error> <WebLogicServer> <BEA-000337> <[STUCK] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' has been busy for "687" seconds working on the request "Workmanager: default, Version: 0, Scheduled=true, Started=true, Started time: 687483 ms
", which is more than the configured time (StuckThreadMaxTime) of "600" seconds. Stack trace:
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:129)
oracle.net.ns.Packet.receive(Packet.java:300)
oracle.net.ns.DataPacket.receive(DataPacket.java:106)
oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:315)
oracle.net.ns.NetInputStream.read(NetInputStream.java:260)
oracle.net.ns.NetInputStream.read(NetInputStream.java:185)
oracle.net.ns.NetInputStream.read(NetInputStream.java:102)
oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:124)
oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:80)
oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1137)
oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:290)
oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:531)
oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:193)
oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:873)
oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1167)
oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1289)
oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1491)
oracle.jdbc.driver.OracleStatementWrapper.executeQuery(OracleStatementWrapper.java:406)
org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:205)
org.apache.commons.dbcp.PoolableConnectionFactory.validateConnection(PoolableConnectionFactory.java:328)
org.apache.commons.dbcp.PoolableConnectionFactory.validateObject(PoolableConnectionFactory.java:308)
org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:855)
org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:95)
org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:551)
org.springframework.jdbc.datasource.DataSourceTransactionManager.doBegin(DataSourceTransactionManager.java:202)