By default, this utility program runs above the 16MB address line, and it primarily uses above-the-line storage. The z/OS default, which provides 32MB of above-the-line storage for all programs, should be adequate for the AIOZ2AFP utility program. If you override the default values for the Language Environment® HEAP or STACK parameters in the EXEC PARM statement, such that the AIOZ2AFP program runs below the 16MB line, you must include a REGION size. Otherwise, you might significantly impact system performance. In this case, the minimum REGION value is 6MB, in addition to twice the size of the largest Xerox resource specified inline in the job. Inline resources include those that FILE DJDE commands and GRAPHIC DJDE commands specify. If you specify a smaller value, out-of-storage errors might occur.

If you do not override the AIOZ2AFP default values, you should ensure that the REGION size is twice the size of the Xerox input data set, plus 4MB. Because this is not always practical for every installation, the AIOZ2AFP utility program automatically stores data on disk to avoid out-of-memory conditions. Although this degrades system performance, you might find it necessary in order to process your largest jobs.