Hi, So one reference for the TIOT size calculation is the ALLOCxx documentation in the MVS Initialization and Tuning Reference, under the TIOT size setting. (I think it might be documented elsewhere, but that's my go-to reference.)
I think this was already noted, but Dynamic Volume Count matters for a TIOT size calculation - the candidate volumes need to be included in the volume count when you're doing your math, even if you're not using them. There's probably lots of ways around this (most of which have already been mentioned). You might be able to break up the single step into multiple steps to make it fit. You could crank up the TIOT size to 64K. You could also try something a little more sophisticated - like dynamically allocating the data sets (take a look at IDCAMS, which can access the data sets via dynamic allocation and avoid the batch limits.) -Scott Ballentine, z/OS Device Allocation sbal...@us.ibm.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
