> ... DFSORT is invoked 1000's of times by the program ... Once upon a time, at a previous job, I ran into a similar situation. The job ran for hours and hours. Analysis showed that SORT was invoked to sort 1 record (yes, that's ONE record!) most of the time and between 2 and about 100 records the rest of the time. A programmer had tried to cobble something together, quick-and-dirty-like, and overlooked the fact that his approach would require several thousands of SORT invocations. SORT invocations take time, especially DYNALLOC, and there's no way (that I know of) around it. You may be able reduce the overhead a bit by adding a //DFSPARM DD * OPTION DYNALLOC=(3390,2) to the JCL, as recommended earlier. The programmer eventually changed the program logic to output all the records to be sorted to a file, then called SORT and finally processed all sorted records ... the job now ran in under 5 minutes.
So, my question to the original poster is: Is it really necessary to invoke SORT thousands of times or could the program logic be changed to avoid or reduce the number of SORT invocations? Regards, Ulrich Krueger ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
