ALLOC** TIOT SIZE On Wed, 4 Dec 2024 09:09:10 +0000 Lennie Bradshaw <[email protected]> wrote:
:>Greetings all, :>The JCL Reference manual (SA23-1385-60) states that the DYNAMNBR parameter can specify a value that is added to the number of existing DD statements for a job step to produce an upper limit on the number of DD statements that may be allocated. It also talks about the size of the TIOT and the number of DD statements it can support and mentions various caveats about the number of UNITs used, passed data sets, and so on. (It does *not* discuss the "permanently allocated" attribute.) :>However it states that the default for DYNAMNBR is zero (0). This would mean that if no DYNAMNBR is specified that the value used is zero. :>However, this would mean that unless existing DD statements were closed or freed up in some way, then the number of DD statements I could dynamically allocate would be, again zero. :>Yet I can use dynamic allocation without specifying DYNAMNBR. How is this working? Is the JCL Reference wrong? Or is there some piece of this puzzle that is missing? :>I have looked in several other manuals including the Init and Tuning guide and the Auth Assembler reference, but cannot see how this is working. -- Binyamin Dissen <[email protected]> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
