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Find the creation time of the GDG?
Posted: Tue Feb 20, 2018 6:05 pm
by RyanFox
Hi,
Can anyone please tell me how to find the creation time of a GDG Generation. I could only identify creation date...
Re: Find the creation time of the GDG?
Posted: Tue Feb 20, 2018 7:25 pm
by nicc
I suspect it is in an SMF record. Otherwise I think the information is only in the spool output of the job that created it.
Re: Find the creation time of the GDG?
Posted: Tue Feb 20, 2018 7:35 pm
by enrico-sorichetti
for a dasd dataset the vtoc will tell
for a tape dataset the TMS will tell
Re: Find the creation time of the GDG?
Posted: Wed Feb 21, 2018 9:11 am
by Robert Sample
The system doesn't keep creation time for data sets. The SMF type 15 record has the open time for the data set (SMF15OPE) but that's about it.
Re: Find the creation time of the GDG?
Posted: Thu Mar 08, 2018 9:31 am
by RyanFox
Thanks all.
So it is never meant to keep the time in the system? Is it not a basic thing to have? Just asking.
Re: Find the creation time of the GDG?
Posted: Thu Mar 08, 2018 6:13 pm
by Robert Sample
So it is never meant to keep the time in the system? Is it not a basic thing to have? Just asking.
The system (that is, the CPU) tracks the time down to the microsecond. HOWEVER, the system does not track creation time for data sets and has no reason to -- there may well be thousands of data sets being created every day and tracking creation time adds a lot of overhead.
Re: Find the creation time of the GDG?
Posted: Thu Mar 15, 2018 11:25 am
by RyanFox
hmmm ok. Thanks Robert.