On Wed, 28 Nov 2012 10:19:04 -0600, Tom Marchant wrote:
>On Wed, 28 Nov 2012 00:30:24 -0600, Paul Gilmartin wrote:
>
>>If I _own_ a thing, you shouldn't be able to
>>do anything that prevents my doing what I want with it.
>
>So if you own a data set and you have permitted me to read it,
>you should be able to delete that data set while I am reading it?
>
If needed, yes. I can certainly do likewise with a UNIX file, although
the space isn't reclaimed until you close it, and I don't know whose
quota it counts again in the meantime.
Last week I needed to delete and rebuild a linklib that a colleague
had allocated. Possibly since July. When he came back this week,
he readily cancelled the job -- it was a test he had largely forgotten.
If JCL allowed UNIX directories in STEPLIB concatenations, the
problem wouldn't have occurred.
And consider the job:
//WHATEVER JOB ...
//*
//STEP1 EXEC PGM=BPXBATCH,PARM='SH sleep 9999'
//*
//STEP2 EXEC PGM=IEFBR14,COND=(0,LE)
//SYSUT1 DD DISP=MOD,DSN=M42TOM.LINKLIB
//
... I can monopolize your data set while not using it for several
hours, preventing any of your use of it. The design shouldn't
allow that.
-- gil
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