I have branched out your question to a new discussion. As it is not related to the other user's problem.
3.9.2/3.9.3 has a problem with LDAP groups, which is not fixed yet Image may be NSFW.
Clik here to view.
OF-830. But i'm not sure you have this.
If you think you have a DB problem (corrupted after a crash maybe), then you should replace it from backup. If you don't have backup, maybe you should do a clean reinstall. As you use LDAP, there is not much info in the DB.
I don't know how exactly RPM work, but i think you should first uninstall the current version and then install the older RPM.
