java.lang.NoClassDefFoundError

Hello

I am getting this error when i run SXMB_IFR. Actually the server was working fine but suddenly this problem occured.

I could see from Microsoft management console that every service is running with green traffic lights. Still when i execute SXMB_IFR i get above error.

Also when i tried to login to Visual Admin it gave following error for the user J2EE_ADMIN.

"Error while connecting

com.sap.engine.services.jmx.exception.JmxSecurityException: Caller J2EE_ADMIN not authorized, only role administrators is allowed to access JMX"

I checked the role from SU01 and it is SAP_J2EE_ADMIN.

Regards

Rajeev