Unable to activate cloud migration app

[Stefan Hauser]

Hi,

at th moment I'm running a server with Confluence 8.5.5 which I like to migrate to the cloud. The cloud migration assistant 3.9.4 is installed but I can't activate the app.

In the atlassian-confluence.log I got the following error:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactorySupplier' defined in OSGi resource[classpath:com/atlassian/migration/agent/CommonBeanConfiguration.class|bnd.id=284|bnd.sym=migration-agent]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.atlassian.migration.agent.store.jpa.SessionFactorySupplier]: Factory method 'sessionFactorySupplier' threw exception; nested exception is javax.persistence.PersistenceException: Failed to update database schema

Analytics for confluence plugin ist activated.

I tried to deinstall and reinstall the confluence cloud migration assistant, but this didn't help.

Activation in safe mode also failed.

[Dhanush]

Hi @Stefan Hauser ,  I created a support ticket for our Migration team to assist you. Check your email for the ticket number!

[Michael Ettl]

Hi, we have exactly the same problem here with an older version. We already performed the migration test 6 months ago but finally didn't migrate. Now we have to migrate and it no longer works.

[Dhanush]

Hi @Michael Ettl ,

I came across the following article which seems to match the symptoms you're experiencing here:

• Confluence Upgrade Failed with liquibase.exception.LockException: Could not acquire change log lock Error

[Michael Ettl]

Thank you, it was a different error which I already found in the logs.

On my instance it happened because of an older MariaDB database and the migration assistant wanted to change an index which caused an error "max key length is 767 bytes". This can be fixed by adding some InnoDB settings in Mariadb.