Please note that presently WebLogic 14.1.2 supports Java 17 and 21, Jakarta EE 8. WebLogic 14.1.2 does not support newer 3rd-party Java frameworks that use “jakarta” package names such as Spring 6.x or SpringBoot 3.x or Hibernate 5.5+.

Oracle is planning to release WebLogic 15.1.1 in CY2025, which will support "Jakarta EE 9.1" and therefore will support applications using Spring 6.x or SpringBoot 3.x or Hibernate 5.5+.

WebLogic 15.1.1 will support Java 17, 21, and 21 virtual threads, and "Jakarta EE 9.1". Therefore, it will provide support Spring 6.x or SpringBoot 3.x or Hibernate 5.5+ from an application perspective.

So, you need to undo the changes in SpringBoot version 3.4.2 and comeback to a previous version 2.7.18.

Kind Regards