运行websphere过程出现以下jdbc出错

我使用Hibernate开发一个程序，运行在Websphere上，发现如果间隔一断时间，大约1H，就会出现以下的问题
[05-3-25 12:42:45:848 CST] 1d4db1a7 JDBCException W net.sf.hibernate.util.JDBCExceptionReporter SQL Error: 17002, SQLState: null
[05-3-25 12:42:46:020 CST] 1d4db1a7 JDBCException E net.sf.hibernate.util.JDBCExceptionReporter Io 异常: Connection reset by peer: socket closed
[05-3-25 12:42:46:036 CST] 1d4db1a7 JDBCException W net.sf.hibernate.util.JDBCExceptionReporter SQL Error: 17002, SQLState: null
[05-3-25 12:42:46:052 CST] 1d4db1a7 JDBCException E net.sf.hibernate.util.JDBCExceptionReporter Io 异常: Connection reset by peer: socket closed
[05-3-25 12:42:46:067 CST] 1d4db1a7 JDBCException E net.sf.hibernate.util.JDBCExceptionReporter Could not execute query
[05-3-25 12:42:46:114 CST] 1d4db1a7 JDBCException E net.sf.hibernate.util.JDBCExceptionReporter TRAS0014I: 下列异常已记录 java.sql.SQLException: Io 异常: Connection reset by peer: socket closed
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:180)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:222)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:335)
at oracle.jdbc.driver.OracleStatement.<init>(OracleStatement.java:503)
at oracle.jdbc.driver.OracleStatement.<init>(OracleStatement.java:518)
at oracle.jdbc.driver.OraclePreparedStatement.<init>(OraclePreparedStatement.java:210)
at oracle.jdbc.driver.OraclePreparedStatement.<init>(OraclePreparedStatement.java:193)
at oracle.jdbc.driver.OracleConnection.privatePrepareStatement(OracleConnection.java:869)
at oracle.jdbc.driver.OracleConnection.prepareStatement(OracleConnection.java:704)
at net.sf.hibernate.impl.BatcherImpl.getPreparedStatement(BatcherImpl.java:249)
at net.sf.hibernate.impl.BatcherImpl.getPreparedStatement(BatcherImpl.java:223)
at net.sf.hibernate.impl.BatcherImpl.prepareQueryStatement(BatcherImpl.java:65)
at net.sf.hibernate.loader.Loader.prepareQueryStatement(Loader.java:704)
at net.sf.hibernate.loader.Loader.doQuery(Loader.java:185)
at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133)
at net.sf.hibernate.loader.Loader.doList(Loader.java:955)
at net.sf.hibernate.loader.Loader.list(Loader.java:946)
at net.sf.hibernate.hql.QueryTranslator.list(QueryTranslator.java:846)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1543)
at net.sf.hibernate.impl.QueryImpl.list(QueryImpl.java:39)
at com.hnyl.sh.posa.dao.distributework.UserInfoDao.getUserInfo(UserInfoDao.java:87)
at com.hnyl.sh.posa.login.LoginAction.execute(LoginAction.java:39)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)


我想是否。连接池断了或连接池超时，是这些问题如何解决 ！
谢谢