I installed ARIS 9.6 designer server on windows 2012 r2 server with MS SQL DB. But the installation failed with unexpected error.

In the umc.log and a few other logs under "work" directory, it shows error message:

2017-04-17 08:27:31,951 [ERROR] (ajp-bio-11082-exec-8) LocalAbstractDao$4 - Failed to initialize persistence layer: {}
java.lang.RuntimeException: com.sag.aris.cip.dbsp.CipTenantDistributionException: could not get a db for tenant(leader did not assign): default

Looks like a database issue? Could someone please help me?