Error in logs after upgrade
Asked by Valentin Pifu:

After we upgrade our instance of confluence to last version 7.15.0 we get this error in logs. How we can fix it?

```
2021-12-03 18:24:59,123 ERROR [Caesium-1-1] [migration.agent.queue.QueueBroker] error An error occurred when getting the next batch for consumer type: CONFLUENCE_IMPORT. Message: javax.persistence.PersistenceException: Failed to update dat
abase schema
com.atlassian.util.concurrent.LazyReference$InitializationException: javax.persistence.PersistenceException: Failed to update database schema
at com.atlassian.util.concurrent.LazyReference.getInterruptibly(LazyReference.java:149)
at com.atlassian.util.concurrent.LazyReference.get(LazyReference.java:112)
at com.atlassian.migration.agent.store.jpa.impl.DefaultSessionFactorySupplier.get(DefaultSessionFactorySupplier.java:65)
at com.atlassian.migration.agent.store.jpa.impl.DefaultSessionFactorySupplier.get(DefaultSessionFactorySupplier.java:40)
at com.atlassian.migration.agent.store.jpa.impl.DefaultPluginTransactionTemplate.on(DefaultPluginTransactionTemplate.java:29)
at com.atlassian.migration.agent.store.tx.PluginTransactionTemplate.write(PluginTransactionTemplate.java:24)
at com.atlassian.migration.agent.queue.QueueBroker.getNextBatch(QueueBroker.java:119)
at com.atlassian.migration.agent.queue.QueueBroker.dispatchBatchToConsumer(QueueBroker.java:113)
at java.base/java.util.ArrayList.forEach(Unknown Source)
at com.atlassian.migration.agent.queue.QueueBroker.runJob(QueueBroker.java:100)
at com.atlassian.confluence.impl.schedule.caesium.JobRunnerWrapper.doRunJob(JobRunnerWrapper.java:117)
at com.atlassian.confluence.impl.schedule.caesium.JobRunnerWrapper.lambda$runJob$0(JobRunnerWrapper.java:87)
at com.atlassian.confluence.impl.vcache.VCacheRequestContextManager.doInRequestContextInternal(VCacheRequestContextManager.java:84)
at com.atlassian.confluence.impl.vcache.VCacheRequestContextManager.doInRequestContext(VCacheRequestContextManager.java:68)
at com.atlassian.confluence.impl.schedule.caesium.JobRunnerWrapper.runJob(JobRunnerWrapper.java:87)
at com.atlassian.scheduler.core.JobLauncher.runJob(JobLauncher.java:134)
at com.atlassian.scheduler.core.JobLauncher.launchAndBuildResponse(JobLauncher.java:106)
at com.atlassian.scheduler.core.JobLauncher.launch(JobLauncher.java:90)
at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.launchJob(CaesiumSchedulerService.java:435)
at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.executeLocalJob(CaesiumSchedulerService.java:402)
at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.executeQueuedJob(CaesiumSchedulerService.java:380)
at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.executeJob(SchedulerQueueWorker.java:66)
at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.executeNextJob(SchedulerQueueWorker.java:60)
at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.run(SchedulerQueueWorker.java:35)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: javax.persistence.PersistenceException: Failed to update database schema
at com.atlassian.migration.agent.store.jpa.impl.LiquibaseSchemaUpgrader.upgrade(LiquibaseSchemaUpgrader.java:35)
at com.atlassian.migration.agent.store.jpa.impl.DefaultSessionFactorySupplier.buildSessionFactory(DefaultSessionFactorySupplier.java:70)
at com.atlassian.util.concurrent.Lazy$Strong.create(Lazy.java:85)
at com.atlassian.util.concurrent.LazyReference$Sync.run(LazyReference.java:325)
at com.atlassian.util.concurrent.LazyReference.getInterruptibly(LazyReference.java:143)
at com.atlassian.util.concurrent.LazyReference.get(LazyReference.java:112)
at com.atlassian.migration.agent.store.jpa.impl.DefaultSessionFactorySupplier.get(DefaultSessionFactorySupplier.java:65)
at com.atlassian.migration.agent.store.jpa.impl.DefaultSessionFactorySupplier.get(DefaultSessionFactorySupplier.java:40)
at com.atlassian.migration.agent.store.jpa.impl.DefaultPluginTransactionTemplate.on(DefaultPluginTransactionTemplate.java:29)
at com.atlassian.migration.agent.store.tx.PluginTransactionTemplate.read(PluginTransactionTemplate.java:16)
at com.atlassian.migration.agent.service.impl.DefaultStatisticsService.loadSpaceStatistics(DefaultStatisticsService.java:151)
at com.atlassian.migration.agent.service.impl.DefaultStatisticsService.calculateServerStats(DefaultStatisticsService.java:188)
at com.atlassian.migration.agent.service.impl.SingleJobExecutor.lambda$execute$0(SingleJobExecutor.java:33)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
... 1 more
Caused by: liquibase.exception.LockException: Could not acquire change log lock. Currently locked by docs.xxxxx.lan (192.168.2.40) since 7/21/21 3:47 PM
at liquibase.lockservice.StandardLockService.waitForLock(StandardLockService.java:230)
at liquibase.Liquibase.update(Liquibase.java:184)
at liquibase.Liquibase.update(Liquibase.java:179)
at com.atlassian.migration.agent.store.jpa.impl.LiquibaseSchemaUpgrader.upgrade(LiquibaseSchemaUpgrader.java:30)
... 16 more
```


Answers:
author: Daniel Ebers
body: Because the question to troubling upgrade processes repeats recently in Community here more of a basic recommendation:  
If your own staff gets stucks with migrated trained and skilled partners are available which are experienced in doing upgrades and complex migrations.  
You can locate a partner near you from partner directory:  
<https://partnerdirectory.atlassian.com/>

Regards,  
Daniel


author: Joshua Sneed Contegix
body: Hi Valentin,

Is your database [a supported version](https://confluence.atlassian.com/doc/supported-platforms-207488198.html)? Cheers!


Tags: confluence-server

server