Re: Database connection problems after 8 hours

> Hello everyone.
> This is a recurrent topic I know, but I have not been able to find a
> solution for it after reading a lot about it on the web.
> How can we make Grails work after 8 hours of users' inactivity?
>
> I am using Grails+MySQL+GlassFish
> In my Grails project I use Domain Classes handled by Hibernate which make
> use of the MySQL database.
> I also make use of an Utility Class to make direct queries to the MySQL
> database.
>
> For the c3p0 pool, my "resources.groovy" file looks like this:
> // Place your Spring DSL code here
> import grails.util.GrailsUtil
> import com.mchange.v2.c3p0.ComboPooledDataSource
> import org.codehaus.groovy.grails.commons.GrailsApplication
> import org.codehaus.groovy.grails.commons.ConfigurationHolder as CH
>
> beans = {
>   if (GrailsUtil.environment != GrailsApplication.ENV_TEST &&
> CH.config.dataSource) {
>       dataSource(ComboPooledDataSource) { bean ->
>          bean.destroyMethod = 'close'
>          user = CH.config.dataSource.username
>          password = CH.config.dataSource.password
>          driverClass = CH.config.dataSource.driverClassName
>          jdbcUrl = CH.config.dataSource.url
>          initialPoolSize = 10
>          minPoolSize = 10
>          maxPoolSize = 50
>          maxStatements = 240
>          maxConnectionAge = 60 * 60 * 2 // 2 hours
>          maxIdleTime = 60 * 60 // 1 hour
>          idleConnectionTestPeriod = 240
>          testConnectionOnCheckin = true
>          testConnectionOnCheckout = true
>          automaticTestTable = "c3p0_test"
>       }
>    }  
> }
>
> My "DataSource.groovy" file has the following:
>
> dataSource {
>   pooled = true
>   driverClassName = "com.mysql.jdbc.Driver"
>   dialect = "org.hibernate.dialect.MySQLInnoDBDialect"
>   username = "*****"
>   password = "*****"
>   autoreconnect = true
>   useUnicode = true
>   characterEncoding = "utf-8"
> }
> hibernate {
>     cache.use_second_level_cache=true
>     cache.use_query_cache=true
>    
> cache.provider_class='com.opensymphony.oscache.hibernate.OSCacheProvider'
> }
>
> The url string I use here is:
> url =
> "jdbc:mysql://localhost:3306/mydatabase?autoReconnect=true&useUnicode=true&characterEncoding=utf-8"
>
>
>
>
> And well... after 8 hours I get the known-by-all message "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:2744)
> at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1612)
> at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
> at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
> at
> com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
> at
> com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1467)
> at
> com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
> at
> org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208)
> at org.hibernate.loader.Loader.getResultSet(Loader.java:1808)
> at org.hibernate.loader.Loader.doQuery(Loader.java:697)
> at
> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
> at org.hibernate.loader.Loader.doList(Loader.java:2228)
> at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125)
> at org.hibernate.loader.Loader.list(Loader.java:2120)
> at
> org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:118)
> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1596)
> at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)
> at org.hibernate.impl.CriteriaImpl.uniqueResult(CriteriaImpl.java:328)
> at
> org.codehaus.groovy.grails.orm.hibernate.metaclass.FindByPersistentMethod$1.doInHibernate(FindByPersistentMethod.java:88)
> at
> org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:419)
> at
> org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:339)
> at
> org.codehaus.groovy.grails.orm.hibernate.metaclass.FindByPersistentMethod.doInvokeInternalWithExpressions(FindByPersistentMethod.java:60)
> at
> org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractClausedStaticPersistentMethod.doInvokeInternal(AbstractClausedStaticPersistentMethod.java:473)
> at
> org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractStaticPersistentMethod.invoke(AbstractStaticPersistentMethod.java:55)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoCachedMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:229)
> at
> org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:52)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:43)
> at
> org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:54)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:132)
> at
> org.codehaus.groovy.grails.plugins.orm.hibernate.HibernatePluginSupport$_addDynamicFinderSupport_closure8.doCall(HibernatePluginSupport.groovy:297)
> at sun.reflect.GeneratedMethodAccessor322.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86)
> at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234)
> at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1061)
> at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:910)
> at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:892)
> at groovy.lang.Closure.call(Closure.java:279)
> at
> org.codehaus.groovy.runtime.metaclass.ClosureStaticMetaMethod.invoke(ClosureStaticMetaMethod.java:55)
> at
> groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1349)
> at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1337)
> at
> groovy.lang.ExpandoMetaClass.invokeStaticMethod(ExpandoMetaClass.java:921)
> at
> org.codehaus.groovy.runtime.callsite.StaticMetaClassSite.call(StaticMetaClassSite.java:23)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:43)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:124)
> at JsecDbRealm.authenticate(JsecDbRealm.groovy:23)
> at JsecDbRealm$authenticate.call(Unknown Source)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:43)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:124)
> at
> org.jsecurity.grails.RealmWrapper.getAuthenticationInfo(RealmWrapper.groovy:53)
> at
> org.jsecurity.authc.pam.ModularRealmAuthenticator.doSingleRealmAuthentication(ModularRealmAuthenticator.java:186)
> at
> org.jsecurity.authc.pam.ModularRealmAuthenticator.doAuthenticate(ModularRealmAuthenticator.java:276)
> at
> org.jsecurity.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:141)
> at
> org.jsecurity.mgt.AuthenticatingSecurityManager.authenticate(AuthenticatingSecurityManager.java:171)
> at
> org.jsecurity.mgt.DefaultSecurityManager.login(DefaultSecurityManager.java:312)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoCachedMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:229)
> at
> org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:52)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:43)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:124)
> at AuthController$_closure3.doCall(AuthController.groovy:26)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:266)
> at
> org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:47)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:142)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:150)
> at AuthController$_closure3.doCall(AuthController.groovy)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86)
> at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234)
> at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1061)
> at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:910)
> at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:892)
> at groovy.lang.Closure.|#]
>
> [#|2009-06-28T11:37:56.233+0200|INFO|glassfish|null|_ThreadID=29;_ThreadName=Thread-3;|call(Closure.java:279)
> at groovy.lang.Closure.call(Closure.java:274)
> at
> org.codehaus.groovy.grails.web.servlet.mvc.SimpleGrailsControllerHelper.handleAction(SimpleGrailsControllerHelper.java:363)
> at
> org.codehaus.groovy.grails.web.servlet.mvc.SimpleGrailsControllerHelper.executeAction(SimpleGrailsControllerHelper.java:243)
> at
> org.codehaus.groovy.grails.web.servlet.mvc.SimpleGrailsControllerHelper.handleURI(SimpleGrailsControllerHelper.java:203)
> at
> org.codehaus.groovy.grails.web.servlet.mvc.SimpleGrailsControllerHelper.handleURI(SimpleGrailsControllerHelper.java:138)
> at
> org.codehaus.groovy.grails.web.servlet.mvc.SimpleGrailsController.handleRequest(SimpleGrailsController.java:88)
> at
> org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
> at
> org.codehaus.groovy.grails.web.servlet.GrailsDispatcherServlet.doDispatch(GrailsDispatcherServlet.java:264)
> at
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
> at
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
> at
> org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
> at
> org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:431)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:337)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
> at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:70)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
> at
> org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:883)
> at
> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:732)
> at
> org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:554)
> at
> org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:485)
> at
> org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:377)
> at
> org.codehaus.groovy.grails.web.util.WebUtils.forwardRequestForUrlMappingInfo(WebUtils.java:293)
> at
> org.codehaus.groovy.grails.web.util.WebUtils.forwardRequestForUrlMappingInfo(WebUtils.java:269)
> at
> org.codehaus.groovy.grails.web.util.WebUtils.forwardRequestForUrlMappingInfo(WebUtils.java:261)
> at
> org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.doFilterInternal(UrlMappingsFilter.java:181)
> at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
> at
> org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.obtainContent(GrailsPageFilter.java:171)
> at
> org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.doFilter(GrailsPageFilter.java:110)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
> at
> org.jsecurity.web.servlet.JSecurityFilter.doFilterInternal(JSecurityFilter.java:382)
> at
> org.jsecurity.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:180)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
> at
> org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:65)
> at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
> at
> org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
> at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
> at
> org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
> at
> org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
> at
> org.apache.catalina.core.StandardWrapperValve.preInvoke(StandardWrapperValve.java:460)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:139)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:186)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
> at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:96)
> at
> com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:187)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:142)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)
> at
> org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:242)
> at
> com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:180)
> at
> com.sun.grizzly.http.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:633)
> at
> com.sun.grizzly.http.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:570)
> at
> com.sun.grizzly.http.DefaultProcessorTask.process(DefaultProcessorTask.java:827)
> at
> com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:152)
> at
> com.sun.enterprise.v3.services.impl.GlassfishProtocolChain.executeProtocolFilter(GlassfishProtocolChain.java:71)
> at
> com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:103)
> at
> com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:89)
> at
> com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
> at
> com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:67)
> at
> com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:56)
> at
> com.sun.grizzly.util.WorkerThreadImpl.processTask(WorkerThreadImpl.java:325)
> at com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:184)
>
>
> ** END NESTED EXCEPTION **
>
>
> There after, I get other sort of errors like:
>
> [#|2009-06-28T11:41:29.779+0200|INFO|glassfish|null|_ThreadID=26;_ThreadName=Thread-3;|2009-06-28
> 11:41:29,779 [httpWorkerThread-80-1] ERROR controller.SearchController  -
> Attempt to update GORM object but failed with exception, calling .refresh()
>
> [#|2009-06-28T11:41:29.775+0200|INFO|glassfish|null|_ThreadID=26;_ThreadName=Thread-3;|2009-06-28
> 11:41:29,773 [httpWorkerThread-80-1] ERROR hibernate.AssertionFailure  - an
> assertion failure occured (this may indicate a bug in Hibernate, but is more
> likely due to unsafe use of the session)
> org.hibernate.AssertionFailure: null id in SearchInfo entry (don't flush the
> Session after an exception occurs) at
> org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:78)
>
>
> How are people making Grails work after 8 hours??
> Everyone should experience these problems too...
>
> Any help will be greatly appreciated.
> Alex
>
>
>