症状

atlassian-confluence.log に次のエラーが返される。

org.springframework.transaction.UnexpectedRollbackException: Transaction rolled back because it has been marked as rollback-only
    at
org.springframework.transaction.support.AbstractPlatformTransactionManager.commit
...

原因

This error can be a result of a number of causes. It's thrown by the Spring framework, and generally appears as a symptom of another issue.

診断

To identify the specific root cause of an occurrence of this error, you'll need to consult the atlassian-confluence.log. The ERROR thrown before 'org.springframework.transaction.UnexpectedRollbackException' and the related stack trace will point to the issue that eventually caused the Spring framework error.

ソリューション