J2ee engine properties

Hi all,

We have EP5 SP5 system in our organization.while upgrading process ,i replace java to latest version.

After changing the java version, j2ee not started.Where i can change the j2ee properties? And also i changed the java properties in configtool,but j2ee is not started.If anybody know the solution pls reply back.

Note:I am replacing jdk1.3.1_12 to jdk1.3.1_15.

While starting from the services file,it giving this error,

"Could not start the sap j2ee engine Alone service on local computer.

The service didnot return an error.This could be an internal windows error or an internal service error.If the problem persists,contact your System Administrator"

Thanks & Regards,

Madhavi