Did you copy the PointBase JDBC driver where Mac OS X can find it as desctibed on:
Install ColdFusion MX on Mac OS X
Step 6 (below)
You must bounce CFMX after doing this so the driver will be found.
ColdFusion MX for Linux ships with a developer version of the PointBase database system. It is used in the example programs and documentation code snippets. We need to make a copy of the PointBase driver and put it where the Mac OS X Java can find it. In the finder navigate (through our nice new CFMX installation) to:
opt ==> coldfusionmx ==> runtime ==>
servers ==> lib
Copy the PointBase jdbc driver: pbserver42RE.jar to
Library ==> Java ==> Extensions
You may see other items in this folder.