> I disagree with you. it is IMO an OPEN issue it should return a RC
> that indicates that open was successful but as a sequential dataset.
A return code after a successful OPEN is already too late.
CLOSE will wipe out the directory.
As Ted says, if you say you want to open the dataset as PS,
that's what it does.
Going back to the '60s design, they could have included
some sort of open option that would indicate that you were
intentionally overriding the DSORG, without which OPEN
would fail.
I'm curious -- does anyone remember how OPEN behaved
if you opened an ISAM dataset with DSORG=PS?
> Date: Wed, 6 Feb 2008 23:53:15 -0600
> From: [EMAIL PROTECTED]
> Subject: Re: VSAM Surprise
> To: [email protected]
>
> On Feb 6, 2008, at 3:31 PM, Ted MacNEIL wrote:
>
> >> I think it violates the principle of least astonishment. Writing
> >> to a PDS as a PS dataset is almost certainly done by accident. It
> >> would be nice it IDCAMS would just say "You didn't want to do that.".
> >
> > It's not an IDCAMS issue.
> > It's a documented (flaw) feature of JCL.
> > The first place searched for file attributes is the executing
> > programme.
> > If it thinks the file is sequential, it is treated as such.
> >
> >
>
> Ted:
>
> I disagree with you. it is IMO an OPEN issue it should return a RC
> that indicates that open was successful but as a sequential dataset.
> Although it might break a lot of code its a close call IMO. I think
> it revolves around OPEN and a feedback code (which is not presented
> to the end user) so IDCAMS is not really at fault its OPEN that has
> the flaw, although I can see it from both sides. I can see where IBM
> would say BAD and walk away from it, or say its fixed in rel 9999.
> Its a no when situation as IBM coded open the way they did and who
> knows how much code would need to be fixed? Now if someone had caught
> this back in the 60's maybe.. but not this late in the game. On the
> other hand they could make IDCAMS (if this is coded in the JCL create
> a member called tempname. This might also break programs, but
> probably less than the first.
>
> Ed
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