I have used a few times but mainly for simple things like storage browse

If I want to dump data from another address space that’s the only way to go

Thanks

On Mon, Apr 3, 2023 at 1:50 PM Seymour J Metz <[email protected]> wrote:

> IPCS is much more  convenient than scanning a printed dump.
>
> ________________________________________
> From: IBM Mainframe Discussion List <[email protected]> on behalf
> of Joseph Reichman <[email protected]>
> Sent: Monday, April 3, 2023 1:41 PM
> To: [email protected]
> Subject: Re: Calling SVC 51
>
> Transaction dump requires IPCS as well it’s unformatted seems restricted
> to one address space
>
> > On Apr 3, 2023, at 1:28 PM, Seymour J Metz <[email protected]> wrote:
> >
> > Have you considered writing a message in a transaction dump?
> >
> > ________________________________________
> > From: IBM Mainframe Discussion List <[email protected]> on
> behalf of Joseph Reichman <[email protected]>
> > Sent: Monday, April 3, 2023 11:37 AM
> > To: [email protected]
> > Subject: Re: Calling SVC 51
> >
> > I got the snap(x) to work dumping the data space owned by another
> address space
> >
> > For my snap(x) dataset I was able to write messages
> > In my recovery where the program abended
> > And registers
> >
> > Just wondering if I can do this with a sdump(x)
> >
> > I know the dcb is RECFM=FB and lrecl=4160
> >
> >> On Apr 3, 2023, at 8:48 AM, [email protected] wrote:
> >>
> >> I know
> >>
> >> I wrote a generic dump routine
> >>
> >> If first flag byte +1 of the parm list  bit0 is 0 its snap(x) NOT sdumpx
> >>
> >> I am trying to dump a dataspace created in a SRB in another address
> space
> >> the doc says I should be able to do it with snapx
> >>
> >> Here is the doc
> >>
> >> Use the DSPSTOR parameter on the SNAPX macro to dump storage from any
> data
> >> space that the caller has addressability to, providing the program also
> has
> >> a TCB key (for SCOPE=SINGLE and SCOPE=ALL data spaces) or a PSW key
> (for a
> >> SCOPE=COMMON data space) that matches the storage key of the data space.
> >>
> >> As it was created with SCOPE=ALL
> >>
> >> I would rather use SNAPX because it easier for me to look in ISPF
> browse the
> >> IPCS
> >> thanks
> >> -----Original Message-----
> >> From: IBM Mainframe Discussion List <[email protected]> On
> Behalf Of
> >> Peter Relson
> >> Sent: Monday, April 3, 2023 8:27 AM
> >> To: [email protected]
> >> Subject: Re: Calling SVC 51
> >>
> >> If by "calling SVC 51" you mean "issuing SNAP(X)", we can continue.
> SVC 51
> >> is used for multiple purposes.
> >>
> >> Use the DCB attributes that are documented or don't bother playing.
> >>
> >> <snip>
> >> I am trying to dump a dataspace (that is owned by an other address
> space)
> >> SNAPX doc says "The system dumps storage from any data space to which
> the
> >> caller has authority" I interpret this to mean that the ALET is on my
> DU-AL
> >> </snip>
> >>
> >> That is not the right interpretation. You have access to spaces
> represented
> >> by entries on your DU-AL, your PASN-AL, or a common area data spaces.
> In all
> >> cases, you would not have access to an entry marked "private" unless you
> >> have a matching EAX.
> >>
> >> SNAP(X) provides information only for data accessible from your address
> >> space (whether because it is part of the address space or is accessible
> by a
> >> suitable access list).
> >>
> >> Further, if the dataspace is "owned by another address space", it can be
> >> risky to add it to "your" access list.
> >>
> >> Peter Relson
> >> z/OS Core Technology Design
> >>
> >>
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-- 
Joe Reichman

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