>The documentation says the TCBJLB points to a DCB of the >first library searched for a LOAD module for a program >running under that task
If it says exactly that with no qualification elsewhere, it could be clarified to say "when not 0". Also, the DCB may represent a concatenation not an individual library. It is true that that will be the first library (or libraries) searched, when a usable copy is not found already-loaded. >I have looked at various TCB's PSATOLD ASXBFTCB and if that address were a >DCB at offset X'28' there would be a CL8 DDname "various TCB's PSATOLD ASXBFTCB" is not something that makes sense to me. As others have mentioned, it is untrue that DCB offset x'28' will ever have a DDNAME if it is opened. And any joblib/steplib/tasklib will be open (and better stay open). Are you aware that ASXBFTCB is not a program task? It is a system task (the RCT task). It will always have a zero TCBJLB as will some of the other early-in-address space tasks (as no joblib/steplib could yet have been defined, and no tasklib is used) such as the dump task. TCBJLB will be 0 when there is no joblib/steplib/tasklib. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
