It is already set :) This should be investigated with OPENJPA community :) PS from the phone, sorry for typos :)
WBR solomax On Jun 27, 2013 2:45 PM, "Alexei Fedotov" <alexei.fedo...@gmail.com> wrote: > After some thinking I believe only autoReconnect=true will help us > having DB updated. > -- > With best regards / с наилучшими пожеланиями, > Alexei Fedotov / Алексей Федотов, > http://dataved.ru/ > +7 916 562 8095 > > [1] Start using Apache Openmeetings today, http://openmeetings.apache.org/ > [2] Join Alexei Fedotov @linkedin, http://ru.linkedin.com/in/dataved/ > [3] Join Alexei Fedotov @facebook, http://www.facebook.com/openmeetings > > > On Thu, Jun 27, 2013 at 11:35 AM, Alexei Fedotov > <alexei.fedo...@gmail.com> wrote: > > The solution should work at least for the case when DB and > > Openmeetings are on the same server. > > -- > > With best regards / с наилучшими пожеланиями, > > Alexei Fedotov / Алексей Федотов, > > http://dataved.ru/ > > +7 916 562 8095 > > > > [1] Start using Apache Openmeetings today, > http://openmeetings.apache.org/ > > [2] Join Alexei Fedotov @linkedin, http://ru.linkedin.com/in/dataved/ > > [3] Join Alexei Fedotov @facebook, http://www.facebook.com/openmeetings > > > > > > On Thu, Jun 27, 2013 at 11:26 AM, Alexei Fedotov > > <alexei.fedo...@gmail.com> wrote: > >> Hello folks, > >> > >> I investigate a log and found out that we constantly fail to commit > >> objects to the database due to connection breaks (both 2.1.1 and 3.0 > >> are affected). There are several options to resolve this in the error > >> message below. What is a preferable one? > >> > >> Here is a sample exception: > >> > >> FailedObject: select c from Sessiondata as c where c.session_id LIKE > >> :session_id [java.lang.String] > >> at > org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:326) > >> ~[org.springframework.orm-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.orm.jpa.DefaultJpaDialect.translateExceptionIfPossible(DefaultJpaDialect.java:120) > >> ~[org.springframework.orm-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:516) > >> ~[org.springframework.orm-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754) > >> ~[org.springframework.transaction-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723) > >> ~[org.springframework.transaction-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393) > >> ~[org.springframework.transaction-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120) > >> ~[org.springframework.transaction-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) > >> ~[spring-aop-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622) > >> ~[spring-aop-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.apache.openmeetings.data.basic.SessiondataDao$$EnhancerByCGLIB$$d3b21640.checkSession(<generated>) > >> ~[com.springsource.net.sf.cglib-2.2.0.jar:na] > >> at > org.apache.openmeetings.servlet.outputhandler.DownloadHandler.service(DownloadHandler.java:96) > >> ~[openmeetings-2.1.1-SNAPSHOT.jar:na] > >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.red5.logging.LoggerContextFilter.doFilter(LoggerContextFilter.java:77) > >> [red5.jar:na] > >> at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) > >> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >> at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146) > >> [na:1.6.0_27] > >> at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > >> [na:1.6.0_27] > >> at java.lang.Thread.run(Thread.java:679) [na:1.6.0_27] > >> Caused by: org.apache.openjpa.persistence.PersistenceException: The > >> last packet successfully received from the server was 52 524 877 > >> milliseconds ago. The last packet sent successfully to the server was > >> 52 524 877 milliseconds ago. is longer than the server configured > >> value of 'wait_timeout'. You should consider either expiring and/or > >> testing connection validity before use in your application, increasing > >> the server configured values for client timeouts, or using the > >> Connector/J connection property 'autoReconnect=true' to avoid this > >> problem. > >> at > org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:4958) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4918) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:136) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:110) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:62) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connect(JDBCStoreManager.java:971) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.kernel.JDBCStoreManager.getConnection(JDBCStoreManager.java:240) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at org.apache.openjpa.jdbc.sql.SelectImpl.execute(SelectImpl.java:413) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at org.apache.openjpa.jdbc.sql.SelectImpl.execute(SelectImpl.java:391) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.sql.LogicalUnion$UnionSelect.execute(LogicalUnion.java:427) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.sql.LogicalUnion.execute(LogicalUnion.java:230) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.sql.LogicalUnion.execute(LogicalUnion.java:220) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.kernel.SelectResultObjectProvider.open(SelectResultObjectProvider.java:94) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.lib.rop.EagerResultList.<init>(EagerResultList.java:34) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at org.apache.openjpa.kernel.QueryImpl.toResult(QueryImpl.java:1251) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:1007) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:863) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:794) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.kernel.DelegatingQuery.execute(DelegatingQuery.java:542) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:286) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:302) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openmeetings.data.basic.SessiondataDao.checkSession(SessiondataDao.java:128) > >> ~[openmeetings-2.1.1-SNAPSHOT.jar:na] > >> at > org.apache.openmeetings.data.basic.SessiondataDao$$FastClassByCGLIB$$8a6617e0.invoke(<generated>) > >> ~[com.springsource.net.sf.cglib-2.2.0.jar:na] > >> at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191) > >> ~[com.springsource.net.sf.cglib-2.2.0.jar:na] > >> at > org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689) > >> ~[spring-aop-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) > >> ~[spring-aop-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> at > org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) > >> ~[org.springframework.transaction-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >> ... 23 common frames omitted > >> Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: > >> The last packet successfully received from the server was 52 524 877 > >> milliseconds ago. The last packet sent successfully to the server was > >> 52 524 877 milliseconds ago. is longer than the server configured > >> value of 'wait_timeout'. You should consider either expiring and/or > >> testing connection validity before use in your application, increasing > >> the server configured values for client timeouts, or using the > >> Connector/J connection property 'autoReconnect=true' to avoid this > >> problem. > >> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > >> Method) ~[na:1.6.0_27] > >> at > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) > >> ~[na:1.6.0_27] > >> at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > >> ~[na:1.6.0_27] > >> at java.lang.reflect.Constructor.newInstance(Constructor.java:532) > >> ~[na:1.6.0_27] > >> at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) > >> ~[mysql-connector-java-jar-5.1.22.jar:na] > >> at > com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1117) > >> ~[mysql-connector-java-jar-5.1.22.jar:na] > >> at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3851) > >> ~[mysql-connector-java-jar-5.1.22.jar:na] > >> at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2471) > >> ~[mysql-connector-java-jar-5.1.22.jar:na] > >> at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651) > >> ~[mysql-connector-java-jar-5.1.22.jar:na] > >> at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2728) > >> ~[mysql-connector-java-jar-5.1.22.jar:na] > >> at com.mysql.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:5075) > >> ~[mysql-connector-java-jar-5.1.22.jar:na] > >> at > org.apache.commons.dbcp.DelegatingConnection.setAutoCommit(DelegatingConnection.java:371) > >> ~[commons-dbcp-jar-1.4.jar:1.4] > >> at > org.apache.commons.dbcp.DelegatingConnection.setAutoCommit(DelegatingConnection.java:371) > >> ~[commons-dbcp-jar-1.4.jar:1.4] > >> at > org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.setAutoCommit(PoolingDataSource.java:328) > >> ~[commons-dbcp-jar-1.4.jar:1.4] > >> at > org.apache.openjpa.lib.jdbc.DelegatingConnection.setAutoCommit(DelegatingConnection.java:167) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.lib.jdbc.DelegatingConnection.setAutoCommit(DelegatingConnection.java:167) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.lib.jdbc.ConfiguringConnectionDecorator$ConfiguringConnection.setAutoCommit(ConfiguringConnectionDecorator.java:117) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.lib.jdbc.ConfiguringConnectionDecorator$ConfiguringConnection.<init>(ConfiguringConnectionDecorator.java:111) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.lib.jdbc.ConfiguringConnectionDecorator.decorate(ConfiguringConnectionDecorator.java:93) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.lib.jdbc.DecoratingDataSource.decorate(DecoratingDataSource.java:99) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.lib.jdbc.DecoratingDataSource.getConnection(DecoratingDataSource.java:88) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connectInternal(JDBCStoreManager.java:982) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> at > org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connect(JDBCStoreManager.java:967) > >> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >> ... 44 common frames omitted > >> Caused by: java.net.SocketException: Broken pipe > >> at java.net.SocketOutputStream.socketWrite0(Native Method) > ~[na:1.6.0_27] > >> at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109) > >> ~[na:1.6.0_27] > >> at java.net.SocketOutputStream.write(SocketOutputStream.java:153) > ~[na:1.6.0_27] > >> at > java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) > >> ~[na:1.6.0_27] > >> at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) > >> ~[na:1.6.0_27] > >> at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3832) > >> ~[mysql-connector-java-jar-5.1.22.jar:na] > >> ... 60 common frames omitted > >> > >> > >> -- > >> With best regards / с наилучшими пожеланиями, > >> Alexei Fedotov / Алексей Федотов, > >> http://dataved.ru/ > >> +7 916 562 8095 > >> > >> [1] Start using Apache Openmeetings today, > http://openmeetings.apache.org/ > >> [2] Join Alexei Fedotov @linkedin, http://ru.linkedin.com/in/dataved/ > >> [3] Join Alexei Fedotov @facebook, http://www.facebook.com/openmeetings > >> > >> > >> On Sat, Jun 1, 2013 at 10:01 PM, Alexei Fedotov > >> <alexei.fedo...@gmail.com> wrote: > >>> There are two possible options. > >>> > >>> 1. Test heavily and ship 2.1.1 release. > >>> 2. Test heavily and ship 3.0 release instead. > >>> 3. Ship 3.0 pre-release without heavy testing. > >>> > >>> Why should we bother about testing in 2.1.1? Haven't we just improved > >>> a few things? We don't actually know if we have improved things. Any > >>> change have a risk of breaking something. > >>> > >>> My suggestion is to have testing infrastructure implemented, this > >>> would help in testing. This will provide feedback. I prefer option > >>> (2), or (3) because (1) is a waste of heavy testing effort. We don't > >>> have enough resources to test two branches thoroughly. > >>> > >>> I constantly get suggestions (the last one from you one Friday), like > >>> let's have a low quality development branch, where we will progress, > >>> and be creative, and let's have someone to produce reliable branches > >>> from these development branches. For people in a role of support > >>> engineers it's hard. That's another reason why I prefer (2) or (3) to > >>> (1). > >>> > >>> BTW, here is start of the error log in our 2.1.1 installation. One can > >>> start fixing existing problems, if we want a release. > >>> > >>> 45 at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) > >>> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >>> 45 at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) > >>> [tomcat-embed-core-jar-7.0.34.jar:7.0.34] > >>> 42 Caused by: java.net.SocketException: Broken pipe > >>> 42 at > org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:62) > >>> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >>> 42 at > org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:136) > >>> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >>> 42 at > org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:110) > >>> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >>> 42 at > org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4918) > >>> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >>> 42 at > org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:4958) > >>> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >>> 42 at > org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connect(JDBCStoreManager.java:971) > >>> ~[openjpa-bundle-2.2.1.jar:2.2.1] > >>> 42 at java.net.SocketOutputStream.socketWrite0(Native Method) > >>> ~[na:1.6.0_27] > >>> 42 at > com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1117) > >>> ~[mysql-connector-java-jar-5.1.22.jar:na] > >>> 42 at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3851) > >>> ~[mysql-connector-java-jar-5.1.22.jar:na] > >>> 32 at > sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > >>> Method) ~[na:1.6.0_27] > >>> 21 at > org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:516) > >>> ~[org.springframework.orm-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >>> 21 at > org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:326) > >>> ~[org.springframework.orm-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >>> 21 at > org.springframework.orm.jpa.DefaultJpaDialect.translateExceptionIfPossible(DefaultJpaDialect.java:120) > >>> ~[org.springframework.orm-jar-3.1.1.RELEASE.jar:3.1.1.RELEASE] > >>> 19 FailedObject: select c from Sessiondata as c where > >>> c.session_id LIKE :session_id [java.lang.String] > >>> 16 java.lang.NullPointerException: null > >>> 12 at > org.apache.openmeetings.remote.ConferenceService.getRoomsByOrganisationWithoutType(ConferenceService.java:147) > >>> ~[openmeetings-2.1.1-SNAPSHOT.jar:na] > >>> 10 at > sun.reflect.GeneratedConstructorAccessor283.newInstance(Unknown > >>> Source) ~[na:na] > >>> 4 at > org.apache.openmeetings.remote.red5.ScopeApplicationAdapter.roomLeaveByScope(ScopeApplicationAdapter.java:564) > >>> [openmeetings-2.1.1-SNAPSHOT.jar:na] > >>> 2 java.lang.Exception: not Authenticated > >>> 2 ERROR 05-28 20:44:56.425 o.a.o.r.WhiteBoardService:408 > >>> [NioProcessor-6] - WhiteboardSyncLockObject not found for this Client > >>> {} > >>> 2 ERROR 05-28 20:44:56.423 o.a.o.r.WhiteBoardService:408 > >>> [NioProcessor-6] - WhiteboardSyncLockObject not found for this Client > >>> {} > >>> 2 Caused by: > >>> com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last > >>> packet successfully received from the server was 84 612 291 > >>> milliseconds ago. The last packet sent successfully to the server was > >>> 84 612 291 milliseconds ago. is longer than the server configured > >>> value of 'wait_timeout'. You should consider either expiring and/or > >>> testing connection validity before use in your application, increasing > >>> the server configured values for client timeouts, or using the > >>> Connector/J connection property 'autoReconnect=true' to avoid this > >>> problem. >
