No suitable driver for mysql in oracle portal server 10g

Hi all

i want run my portlet with mysql4.1 database from "oracle application server portal 10g".

i did all configuration in data source and also i kept mysql connector jar file into all oraclehome/jdbc/jlib folder.

when i run the portlet, then i am getting "No suitable driver" in my portal page.

i want check server console or server log for oracle application server portal.

please help ,where to find server log?

Any suggestions or help from your side.

Thanks in advance.
Raju.k