Log data set

The log data set is used to capture data that can be useful for such things as diagnosing problems. This data includes, for example, data written as a result of:

Using the LOG service
Test and trace data such as:
- ISPF TRACE mode data
- Dialog Test option 7.7 dialog trace data.

Use the Log/List pull-down from the ISPF Settings panel action bar to prevent generating the ISPF log data set. However, if you use the Dialog Test option (7), allow generating the log data set because Dialog Test writes trace data to the log when you request it. Also, if Dialog Test finds an unexpected condition, problem data and error messages are written to the log.