If I am creating an application WPAR for say running the DB2 database instance, does the application WPAR die if the command to start DB2 fails?
Fails! Fails! Why would it fail? An application WPAR will stop once the program you start for the WPAR to run completes and all sub processes that it started finish too. But note: DB2 is an ideal application to run in a System WPAR – you can make the data only available to the WPAR and you have extra security plus you can monitor just the WPAR/DB2 work.