WebSphere Application Server

Hi Friends , today we will discuss about some errors and exceptions in WAS.  Application profiling exceptions : The following exceptions are thrown in response to various illegal actions related to application profiling.  com.ibm.ws.exception.RuntimeWarning :  This exception is thrown when the application is started, if the application is configured incorrectly. The startup is consequently terminated. Some examples of bad configurations include: v A task configured on two different application profiles. v A method configured with two different task run-as policies .  com.ibm.websphere.appprofile.IllegalTaskNameException :  This exception is raised if an application attempts to programmatically set a task when that task has not been configured as a task name reference. Error: java.lang.NoClassDefFoundError: Explaination:  This exception is thrown when Java code cannot load the specified class. Possible Cause:  Invalid or non-existent class...