It seems that newer versions of Keycloak removed the Oracle driver for licensing issues. keycloak/keycloak#29491 The solution would be to externally install the driver (you could use initContainers, ...

Area dependencies Describe the bug I'm using the IDELauncher class with the server's pom.xml to start Keycloak in the Eclipse IDE. This setup was working fine with previous Keycloak versions. However, ...