Uploading plugin to Confluence failed due to database error
Asked by Adrian Moerchen:

Hi,

we have a very strange problem, which only occurs on the production system. Test environment is okay not working too.

It is not possible for administrators to manually upload plugins, an error occurs and the following exception is logged:

```
2014-09-15 10:43:59,837 WARN [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1] [mchange.v2.resourcepool.BasicResourcePool] run Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@5a29db1cjava.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@5a29db1c	at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:571)	at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:234)	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:470)	at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:964)	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)2014-09-15 10:43:59,838 ERROR [UpmAsynchronousTaskManager:thread-1] [springframework.transaction.support.TransactionTemplate] rollbackOnException Application exception overridden by rollback exception -- url: /rest/plugins/1.0/ | userName: xyz | referer: https://url/plugins/servlet/upmjava.lang.RuntimeException: There was a problem evicting or flushing a PluginData object	at com.atlassian.confluence.plugin.persistence.hibernate.HibernatePluginDataDao.saveOrUpdate(HibernatePluginDataDao.java:80)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at com.sun.proxy.$Proxy10.saveOrUpdate(Unknown Source)	at com.atlassian.confluence.plugin.DefaultPluginInstaller.installPlugin(DefaultPluginInstaller.java:31)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at com.sun.proxy.$Proxy12.installPlugin(Unknown Source)	at com.atlassian.plugin.manager.NoOpRevertablePluginInstaller.installPlugin(NoOpRevertablePluginInstaller.java:34)	at com.atlassian.plugin.manager.DefaultPluginManager.installPlugins(DefaultPluginManager.java:457)	at com.atlassian.confluence.plugin.EventDispatchingPluginController.installPlugins(EventDispatchingPluginController.java:89)	at sun.reflect.GeneratedMethodAccessor2967.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at com.sun.proxy.$Proxy53.installPlugins(Unknown Source)	at sun.reflect.GeneratedMethodAccessor2967.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)	at com.sun.proxy.$Proxy292.installPlugins(Unknown Source)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at com.sun.proxy.$Proxy1366.installPlugins(Unknown Source)	at com.atlassian.upm.manager.install.PluginArtifactInstallerImpl$1.doInTransaction(PluginArtifactInstallerImpl.java:56)	at com.atlassian.upm.manager.install.PluginArtifactInstallerImpl$1.doInTransaction(PluginArtifactInstallerImpl.java:51)	at com.atlassian.sal.core.transaction.HostContextTransactionTemplate$1.doInTransaction(HostContextTransactionTemplate.java:25)	at com.atlassian.sal.spring.component.SpringHostContextAccessor$1.doInTransaction(SpringHostContextAccessor.java:88)	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)	at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82)	at sun.reflect.GeneratedMethodAccessor89.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)	at com.sun.proxy.$Proxy208.doInTransaction(Unknown Source)	at sun.reflect.GeneratedMethodAccessor89.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)	at com.sun.proxy.$Proxy208.doInTransaction(Unknown Source)	at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21)	at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at com.sun.proxy.$Proxy1272.execute(Unknown Source)	at com.atlassian.upm.manager.install.PluginArtifactInstallerImpl.installPlugins(PluginArtifactInstallerImpl.java:50)	at com.atlassian.upm.manager.install.AbstractPluginInstallHandler.installSingleArtifact(AbstractPluginInstallHandler.java:95)	at com.atlassian.upm.manager.install.JarPluginInstallHandler.installPluginInternal(JarPluginInstallHandler.java:47)	at com.atlassian.upm.manager.install.AbstractPluginInstallHandler.installPlugin(AbstractPluginInstallHandler.java:50)	at com.atlassian.upm.manager.PluginInstallationServiceImpl.installPlugin(PluginInstallationServiceImpl.java:86)	at com.atlassian.upm.manager.PluginInstaller.execute(PluginInstaller.java:141)	at com.atlassian.upm.manager.PluginInstaller.install(PluginInstaller.java:96)	at com.atlassian.upm.rest.resources.install.InstallTask.installFromFile(InstallTask.java:127)	at com.atlassian.upm.rest.resources.install.InstallFromFileTask.executeTask(InstallFromFileTask.java:39)	at com.atlassian.upm.rest.resources.install.InstallTask.call(InstallTask.java:63)	at com.atlassian.upm.rest.resources.install.InstallTask.call(InstallTask.java:33)	at com.atlassian.upm.rest.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:77)	at com.atlassian.upm.rest.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:72)	at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:42)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:744)Caused by: net.sf.hibernate.exception.GenericJDBCException: could not insert: [com.atlassian.confluence.plugin.persistence.PluginData#17793030]	at net.sf.hibernate.exception.ErrorCodeConverter.handledNonSpecificException(ErrorCodeConverter.java:90)	at net.sf.hibernate.exception.ErrorCodeConverter.convert(ErrorCodeConverter.java:79)	at net.sf.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29)	at net.sf.hibernate.persister.AbstractEntityPersister.convert(AbstractEntityPersister.java:1331)	at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:472)	at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:436)	at net.sf.hibernate.impl.ScheduledInsertion.execute(ScheduledInsertion.java:37)	at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2464)	at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2450)	at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2407)	at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2276)	at com.atlassian.confluence.plugin.persistence.hibernate.HibernatePluginDataDao.saveOrUpdate(HibernatePluginDataDao.java:75)	... 117 moreCaused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureThe last packet successfully received from the server was 63 milliseconds ago.  The last packet sent successfully to the server was 65 milliseconds ago.	at sun.reflect.GeneratedConstructorAccessor589.newInstance(Unknown Source)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)	at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1129)	at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3988)	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2598)	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2778)	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2825)	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2156)	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2441)	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2366)	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2350)	at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)	at net.sf.hibernate.impl.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:22)	at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:462)	... 124 moreCaused by: java.net.SocketException: Connection reset	at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:118)	at java.net.SocketOutputStream.write(SocketOutputStream.java:159)	at java.io.BufferedOutputStream.write(BufferedOutputStream.java:122)	at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3968)	... 134 more2014-09-15 10:43:59,839 WARN [UpmAsynchronousTaskManager:thread-1] [atlassian.upm.manager.PluginInstallationServiceImpl] installPlugin Plugin installation failed: Could not roll back Hibernate transaction; nested exception is net.sf.hibernate.TransactionException: Rollback failed with SQL exception:  -- url: /rest/plugins/1.0/ | userName: xyz | referer: https://url/plugins/servlet/upm2014-09-15 10:43:59,839 WARN [UpmAsynchronousTaskManager:thread-1] [atlassian.upm.manager.PluginInstallationServiceImpl] installPlugin org.springframework.transaction.TransactionSystemException: Could not roll back Hibernate transaction; nested exception is net.sf.hibernate.TransactionException: Rollback failed with SQL exception:  -- url: /rest/plugins/1.0/ | userName: xyz | referer: https://url/plugins/servlet/upmorg.springframework.transaction.TransactionSystemException: Could not roll back Hibernate transaction; nested exception is net.sf.hibernate.TransactionException: Rollback failed with SQL exception: 	at org.springframework.orm.hibernate.HibernateTransactionManager.doRollback(HibernateTransactionManager.java:532)	at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:823)	at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:800)	at org.springframework.transaction.support.TransactionTemplate.rollbackOnException(TransactionTemplate.java:154)	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:132)	at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82)	at sun.reflect.GeneratedMethodAccessor89.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)	at com.sun.proxy.$Proxy208.doInTransaction(Unknown Source)	at sun.reflect.GeneratedMethodAccessor89.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)	at com.sun.proxy.$Proxy208.doInTransaction(Unknown Source)	at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21)	at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at com.sun.proxy.$Proxy1272.execute(Unknown Source)	at com.atlassian.upm.manager.install.PluginArtifactInstallerImpl.installPlugins(PluginArtifactInstallerImpl.java:50)	at com.atlassian.upm.manager.install.AbstractPluginInstallHandler.installSingleArtifact(AbstractPluginInstallHandler.java:95)	at com.atlassian.upm.manager.install.JarPluginInstallHandler.installPluginInternal(JarPluginInstallHandler.java:47)	at com.atlassian.upm.manager.install.AbstractPluginInstallHandler.installPlugin(AbstractPluginInstallHandler.java:50)	at com.atlassian.upm.manager.PluginInstallationServiceImpl.installPlugin(PluginInstallationServiceImpl.java:86)	at com.atlassian.upm.manager.PluginInstaller.execute(PluginInstaller.java:141)	at com.atlassian.upm.manager.PluginInstaller.install(PluginInstaller.java:96)	at com.atlassian.upm.rest.resources.install.InstallTask.installFromFile(InstallTask.java:127)	at com.atlassian.upm.rest.resources.install.InstallFromFileTask.executeTask(InstallFromFileTask.java:39)	at com.atlassian.upm.rest.resources.install.InstallTask.call(InstallTask.java:63)	at com.atlassian.upm.rest.resources.install.InstallTask.call(InstallTask.java:33)	at com.atlassian.upm.rest.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:77)	at com.atlassian.upm.rest.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:72)	at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:42)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:744)Caused by: net.sf.hibernate.TransactionException: Rollback failed with SQL exception: 	at net.sf.hibernate.transaction.JDBCTransaction.rollback(JDBCTransaction.java:91)	at org.springframework.orm.hibernate.HibernateTransactionManager.doRollback(HibernateTransactionManager.java:529)	... 54 moreCaused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Communications link failure during rollback(). Transaction resolution unknown.	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)	at com.mysql.jdbc.Util.getInstance(Util.java:386)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1015)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:975)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:920)	at com.mysql.jdbc.ConnectionImpl.rollback(ConnectionImpl.java:5084)	at com.mchange.v2.c3p0.impl.NewProxyConnection.rollback(NewProxyConnection.java:855)	at net.sf.hibernate.transaction.JDBCTransaction.rollback(JDBCTransaction.java:86)	... 55 more
```

Some information:

* Confluence is 5.4
* Normal usage is working fine
* The system is not allowed to access the internet and though not the marketplace

Any ideas?

Thanks, Adrian


Answers:
author: Adrian Moerchen
body: Okay, the solution was quite easy: Just use the correct (supported) MySQL server version!!!!!!


author: Tiago Comasseto
body: Hi Adrian, it's a bit difficult to determine the cause of this issue, but it looks like something related to database communication because of the message*"* *Communications link failure*".

Here some of the things that you may to check:

1. Update Universal Plugin Manager to the latest compatible version;
2. Check your [database server settings](https://confluence.atlassian.com/display/DOC/Database+Setup+For+MySQL), specially *max_allowed_packet* and *transaction-isolation* (it must be READ-COMMITTED)
3. Configure a [validation query SQL](https://confluence.atlassian.com/display/DOC/Surviving+Database+Connection+Closures), so that the application will validate if the connection pool isn't broken.

I hope it helps.

Cheers

comments: author: Adrian Moerchen
body: Thanks, for your answer.I checked the database settings and validation query, but these are set. To update UPM, I would need a manual way to do this, as upload isn't working.


author: Jobin Kuruvilla [Adaptavist]
body: There is a JIRA KB for the same error. Maybe try the same?

<https://confluence.atlassian.com/display/JIRAKB/Reindexing+JIRA+Results+in+Communications+Link+Failure+During+Commit>

If that doesn't work, try this: <https://confluence.atlassian.com/display/CONFKB/%27Communications+link+failure%27+CommunicationsException+Error+with+JIRA+User+Management+on+MySQL>

comments: author: Adrian Moerchen
body: Thank You, we will try this.


author: Adrian Moerchen
body: Thanks again, but unfortunately this didn't worked.


Tags: confluence-administration

jdbc

mysql