do NOT set pervasive to 'minimial state if inactive'. That will crippe your pervasive app, and cause other issues.
If you server has a 1G of RAM, allocate 350M to SQL server and 350M to Pervasive and leave them. Adjust the ratio to suit, ie 600, 100 if sql is heavily used and pervasive isn't. Just make sure you don't over commit, particularly sql server which by defaults will use all the RAM on the machine.
JON