AW: Is it possible to block a build job if another one is running which is not part of up- or downstream?

[Hauser, Wolfgang (external)]

Hi Jan,
 
have a little look at the "locks-and-latches" plugin.
 
This should provide the lock you need. 
e.g. set up the lock "database" in jenkins configuration
use the lock in all database related jobs.
 
Regards
Wolfgang