An Hibernate Error Plese Help Me

hi all

i m using hibernate with MySQL5.0 and i find an error in connection the data base with the help of hibernate3.2

as my application is running very smothly on server but after the past of 1 or 2 days it unable to connect to database and throws

Communication link failure: java.net.SocketException, underlying cause: Broken pipe

i m sending the hole error displayed in log file

plese help me as soon as posible

thanks

Rahul kumar Sharma

(SQLStateConverter.java:74)

at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)

at org.hibernate.loader.Loader.doList(Loader.java:2214)

at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2095)

at org.hibernate.loader.Loader.list(Loader.java:2090)

at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375)

at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)

at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)

at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)

at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)

at hibernate.LoginBeanFacade.findUser(LoginBeanFacade.java:38)

at struts.action.LoginAction.execute(LoginAction.java:57)

at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)

at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)

at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)

at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)

at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833)

at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639)

at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285)

at java.lang.Thread.run(Thread.java:595)

Caused by: java.sql.SQLException: Communication link failure: java.net.SocketException, underlying cause: Broken pipe

** BEGIN NESTED EXCEPTION **

java.net.SocketException

MESSAGE: Broken pipe

STACKTRACE:

java.net.SocketException: Broken pipe

at java.net.SocketOutputStream.socketWrite0(Native Method)

at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)

at java.net.SocketOutputStream.write(SocketOutputStream.java:136)

at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)

at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)

at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:1765)

at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:1728)

at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1149)

at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1279)

at com.mysql.jdbc.Connection.execSQL(Connection.java:2281)

at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1634)

at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)

at org.hibernate.loader.Loader.getResultSet(Loader.java:1778)

at org.hibernate.loader.Loader.doQuery(Loader.java:662)

at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)

at org.hibernate.loader.Loader.doList(Loader.java:2211)