8.24.3 Data output to the exception log
If an exception name is output to the additional information (OPT) column at a trace based performance analysis collection point, detailed information about the exception is output to the exception log at the same time. You can analyze the failure by comparing the exception name output by the trace based performance analysis with the exception log. However, if you intentionally raise exceptions in a batch application or other application and use them to control the processing of jobs, the amount of log output might increase because detailed information is output to the exception log each time an exception is raised. When executing such an application, set a larger size for the exception log in advance.