In a recent note, Greg Price said: > Date: Wed, 1 Jun 2005 22:40:25 +1000 > > >>Well, here's my theory: > > > > Does this have to be done by theory and/or experiment, or is it made > > clear in the documentation? > > I believe theory/experiment/doco all agree on how "the system" behaves > here. The "theory" reference is due to me not having access to the > current source of IEBGENER. > If the documentation were adequate, there would be no need for access to the source code.
> I was going to suggest that experiments with SYSOUT are not relevant > to illustrate DCB processing, but Ed J said it first. Hence my > If JES performs DCB processing, it's relevant. The relevant information should be supplied at least in a JES-specific manual, and "Using Data Sets" should contain at least a cross reference to it. > I have not checked the doco re your point about the exit getting > control before or after the SDB is filled in. Experiment indicates > that the exit ends before the OPEN-time SDB is supplied. > I have found no statement that clarifies this. Again, with proper documentation experiment would be unnecessary. > I expect "DFSMS: Using Data Sets" to talk about the OPEN-time SDB, > and "DFSMS: Implementing System Managed Storage" (SC26-7407-02) to > talk about the DADSM end of things including allocation-time SDB. > I suppose it might be nice if each had a pointer to the other if > they don't already. > The data sets in my tests all appear to be non-SMS (At least ISPF 3.4.I shows no Management class, Storage class, nor Data class information.) Yet, SDB appears to have filled in BLKSIZE for a data set that was never opened. I had hoped that non-SMS would simplify things by leaving one more component out of the process. -- gil -- StorageTek INFORMATION made POWERFUL ---------------------------------------------------------------------- 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
