Example 4

         //STEP1 EXEC PGM=DTXCMDSV,
         //  PARM='MAP1DD -<opt1> -<opt2> MAP2DD -<opt1> -<opt2>'

The PARM statement may be continued onto multiple lines; however JCL syntax limits it to a total of 100 characters. However, this JCL limitation can be overcome by using the Command Dataset execution command (-@).

During execution, the map is loaded once and is removed from storage only when the task ends or when the map being executed is different than the last executed map. This means that when maps are executed repeatedly, they are not reloaded each time.