was8.5.5运行时数据源连接异常关闭

在性能测试的时候，用一个比较小的压力持续12小时运行，然后会在几个小时后突然所有案例都失败了；紧接着查看日志发现那些失败的案例都报同一个错：java.sql.SQLException: 关闭的连接；我怀疑是因为在测试的时候压力较小，数据源连接池使用的较小，然后空闲的较多，was在关闭那些空闲的连接池的时候，恰好有一些连接池被使用，所以导致报错。

还有一个疑问，会不会是因为防火墙，防火墙只开放了常用的那些端口，其余都是拒绝状态的。

以下是我的错误信息：

2017-05-04 07:59:12,078 com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessor [pool-5-thread-7] (TcpMessageAccessor.java:212) ERROR --> 调用异常：

com.dcsa.symbols.cbsd.tcpout.accessor.AccessorException: TcpOut查询请求消息实体异常

        at com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessorImpl.ReadReqData(TcpMessageAccessorImpl.java:305)

        at com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessorImpl.doAccess(TcpMessageAccessorImpl.java:72)

        at com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessor.access(TcpMessageAccessor.java:209)

        at com.dcsa.symbols.cbsd.tcpout.adapter.CBSDSocketMessageHander.DealMessage(CBSDSocketMessageHander.java:132)

        at com.dcsa.symbols.cbsd.tcpout.adapter.CBSDSocketMessageHander.run(CBSDSocketMessageHander.java:59)

        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:908)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:931)

        at java.lang.Thread.run(Thread.java:773)

Caused by:

java.sql.SQLException: 关闭的连接

        at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)

        at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:110)

        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:171)

        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:227)

        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:439)

        at oracle.jdbc.driver.PhysicalConnection.prepareStatement(PhysicalConnection.java:3046)

        at oracle.jdbc.driver.PhysicalConnection.prepareStatement(PhysicalConnection.java:2961)

        at oracle.jdbc.OracleConnectionWrapper.prepareStatement(OracleConnectionWrapper.java:98)

        at com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessorImpl.ReadReqData(TcpMessageAccessorImpl.java:220)

        ... 7 more

2017-05-04 07:59:12,079 com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessor [pool-5-thread-7] (TcpMessageAccessor.java:150) DEBUG --> JDBC rollback transaction...null

2017-05-04 07:59:12,079 com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessor [pool-5-thread-7] (TcpMessageAccessor.java:158) ERROR --> JDBC rollback transaction error...

com.dc.datastore.PMException:

ErrorCode:[system.pm.LocalTransactionNeedRollback]

ErrorMesg:[???zh_CN.system.pm.LocalTransactionNeedRollback???]

com.dc.datastore.PMException:

ErrorCode:[system.pm.LocalTransactionNeedRollback]

ErrorMesg:[???zh_CN.system.pm.LocalTransactionNeedRollback???]

        at com.dc.datastore.DataStore.rollback(DataStore.java:288)

        at com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessor.rollback(TcpMessageAccessor.java:153)

        at com.dcsa.symbols.cbsd.tcpout.accessor.TcpMessageAccessor.access(TcpMessageAccessor.java:216)

        at com.dcsa.symbols.cbsd.tcpout.adapter.CBSDSocketMessageHander.DealMessage(CBSDSocketMessageHander.java:132)

        at com.dcsa.symbols.cbsd.tcpout.adapter.CBSDSocketMessageHander.run(CBSDSocketMessageHander.java:59)

        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:908)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:931)

        at java.lang.Thread.run(Thread.java:773)

希望大神可以帮忙分析分析，提出一些解决方法，谢谢了！！！