Situation
available Access manager Appliance all in one, based on Sles 12 SP5

Updates are available in the appliance management , jetty

Updates are installed, after which access to the appliance management is no longer possible.
Error in the web browser
Data model is not available

Checked on the Appliance Console whether the Service
vabase-datamodel
is running
Service start aborted with error
In the logfile you can see

/var/opt/novell/datamodel-service/logs/datamodel.stderrorout.out

2023-01-16 13:58:58.277 [Thread-1] INFO ServiceMain - Exiting datamodel service.
/bin/sh: /usr/lib64/jvm/java-11-openjdk/bin/java: No such file or directory
/bin/sh: /usr/lib64/jvm/java-11-openjdk/bin/java: No such file or directory

No openjdk 11 is available on Sles 12 sp5 in the appliance.

Installed is vabase-datamodel 15.2.1-20.1

Solution
Downgrade to the package shown as available
vabase-datamodel 15.1.2-33.1
Afterwards, access to the administration of the appliance is possible again.

Upgrades to 5.0.2 or 5.0.3 does the same in my enviroment

Development does not check the dependency !

Thomas