There are a number of reasons to encounter the Error 500: system#notboundexception message in your browser windows when you try to access a Maximo/TPAE/CCMDB/TSRM/EAM/etc system after a startup.
http://www-01.ibm.com/support/docview.wss?uid=swg21321771
http://www-01.ibm.com/support/docview.wss?uid=swg21320406
http://www-01.ibm.com/support/docview.wss?uid=swg21261539
http://www-01.ibm.com/support/docview.wss?uid=swg21305743
In general, the cause of the problem is that the application cannot connect to the database properly, for whatever reason.
I encountered the problem this week when I visited a customer’s test site. I could not login to the system, until I realized that I had been directed to an old server, which had it’s database tables truncated!
-- Robert