What are the steps to reproduce your problem?
- Use the Camunda Webapps EE Spring Boot Starter version 3.1.1 or above with the camunda license provided in resources/
- Use PostgreSQL 9.6.5.
What is the problem?
When the Camunda Spring Boot application is started, it fails with a PSQLException: Cannot commit when autoCommit is enabled exception related to the EnterLicenseKeyConfiguration class.
What would be the expected behavior:
The license is loaded and committed correctly and the application is successfully started.
The Camunda Spring Boot Starter version 3.1.1 performs an explicit commit statement when the license key is entered in the database. This doesn't work well with the PostgreSQL auto-commit feature, which internally begins and commits a transaction automatically on each db operation.