John and Patrick The important point here are as follows:
1. It is a feature of started task procedures that it is possible to provide a procedure name that differs from the procedure library member name. 2. z/OS (and many flavours of MVS before it) provides a procedure member IEESYSAS which may be used simply to start a program when no DD statements are needed. 3. It is possible to specify the value for the EXEC statement PGM parameter as a symbolic parameter in a procedure definition (PROG in the case of IEESYSAS)[1]. In the case of the resolver program started in its default guise, the procedure is IEESYSAS and the started task is given the name RESOLVER by adding .RESOLVER to the member name. These points are MVS business-as-usual even they constitute a bit of a relatively obscure "trick". - The text in the CS IP 1.9 manual: <quote> Because z/OS UNIX does not receive any error indication when it tries to start the address space, it will issue an informational message containing the name of the procedure it has started. The message is: BPXF224I THE RESOLVER_PROC, procname, IS BEING STARTED. Rule: If the RESOLVER_PROC statement is not present or is specified with a procedure name of DEFAULT, the procname value will be RESOLVER even though no start procedure was used. If you want to use a start procedure named RESOLVER, you must add a RESOLVER_PROC(RESOLVER) statement to your BPXPRMxx parmlib member. </quote> I would prefer the following: <quote> Because z/OS UNIX does not receive any error indication when it submits the command internally to start the address space, it will issue an informational message containing the name of the procedure it has started. The message is: BPXF224I THE RESOLVER_PROC, procname, IS BEING STARTED. Note: If the RESOLVER_PROC statement is not present in BPXPRMxx or is specified with a procedure name of DEFAULT, the procname value will appear in this message as RESOLVER. This is because the actual procedure started is IEESYSAS with RESOLVER used as the identifier parameter. However If you want to use a start procedure with member name RESOLVER, you can ensure that a RESOLVER_PROC(RESOLVER) statement is present in your BPXPRMxx parmlib member. </quote> The point the original author thought he/she was trying to make here is that, just because a procedure named RESOLVER appears to be being used, it does not imply that a procedure member actually called RESOLVER cannot be present in the procedure library and invoked by means of the BPXPRMxx statement. Interestingly enough, if you happened to want your resolver procedure to use the member name DEFAULT, *then* you'd be stumped; you'd also be a bit weird - but I would stand by the principle that a systems programmer ought to be allowed to be weird if he/she so desires. Perhaps "resolver" translates to a word that sounds like "default" in some language or other - you never know! It's unnecessary to make the general point by referring to a general procedure name/member name, John's XXXXX, since that is covered in the description of the RESOLVER_PROC statement in the MVS Initialization and Tuning Guide. It's not strictly true that the procedure name IEESYSAS is being started since that is the *member* name and the MVS feature is used to provide the procedure name - or address space name - RESOLVER. There's no sort-of hard-coded JCL. - If RESOLVER_PROC(DEFAULT) is found or assumed by default when BPXPRMxx ix processed, the logic issues the command START IEESYSAS.RESOLVER,PROG=EZBREINI,SUB=MSTR - If RESOLVER_PROC(xxxxx) is found when BPXPRMxx is processed, the logic issues the command START xxxxx,SUB=MSTR This is all hinted at in the next section, 1.2.6.3 Managing the resolver address space. Chris Mason [1] Making sure of my facts, I Googled for IEESYSAS and found out that the member IEESYSAS consists of the two statements: //IEESYSAS PROC PROG=IEFBR14 //IEFPROC EXEC PGM=&PROG ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
