Hi,
How does synchronous replication of DB2 data affect the effectiveness of
zHyperlink? The storage array and the mainframe is within the 150m distance,
however our DR site is way beyond this distance.
Regards
Theo
Nedbank disclaimer and confidentiality notice:
This emai
Theo,
zHyperlink write functionality should work in a Metro Mirror environment with
appropriate maintenance, but you also need to activate zHyperwrite to have your
DB2 log writes done simultaneously to the primary and secondary volumes. We
have been told by IBM that zHyperlink write functionali
My advice: Do Not Spin.
If your implementation of a "lock" is to loop until it is available, you
are pretty much doomed to failure in some edge cases over which you likely
have no control.
You can spin for a while, but then really need to "wait" (or pause) until
"posted" (or released) when th
On 2019-10-22 7:42 PM, Peter Relson wrote:
You can spin for a while, but then really need to "wait" (or pause) until
"posted" (or released) when the resource becomes available..
The code snippets I posted show that the code sleeps rather than waiting
to be signaled which I suspect may be
ch
In article you wrote:
> On 2019-10-22 7:42 PM, Peter Relson wrote:
> > You can spin for a while, but then really need to "wait" (or pause) until
> > "posted" (or released) when the resource becomes available..
> The code snippets I posted show that the code sleeps rather than waiting
> to be sign
Thank you, Don!
On 2019-10-22 8:37 PM, Don Poitras wrote:
And for things like "enabled resources" (ENQ, LOCAL lock), the system may
attempt to manage the work unit priorities to give the "holder" some extra
CPU time.
This is interesting for ENQ. Windows has a mechanism in place to raise
the pri
Hi Tom,
Thanks for the reply.
So it works with Metro Mirror (synchronous) irrespective of the distance of the
DR site, which in our case is about 22km.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Revard, Thomas (T)
Sent: 22 October 2019 12:45 PM
To: IBM-MAIN
We are currently thinking about converting many of our PDS libraries to PDSE.
While researching the possible pitfalls to a PDSE one that concerned me the
most is
"Blocked Workload" that Thomas Reed discussed at SHARE in 2018.
This situation is said to occur when CPU is near 100% (pretty common
I don't have any recent experience with 100% utilization, but isn't that a
generic problem with any shared resource?
I doubt this would be an issue unless you have a PDSE with lots of output
activity. But I don't see that a PDS would do better.
sas
On Tue, Oct 22, 2019 at 10:27 AM Toby Seguin <
Take a look at BLWLINTHD and BLWLTRPCT in IEAOPTxx, Tuning options for blocked
workloads.
Mark Jacobs
Sent from ProtonMail, Swiss-based encrypted email.
GPG Public Key -
https://api.protonmail.ch/pks/lookup?op=get&search=markjac...@protonmail.com
‐‐‐ Original Message ‐‐‐
On Tuesday,
On Tue, 22 Oct 2019 10:17:07 -0500, Toby Seguin wrote:
>We are currently thinking about converting many of our PDS libraries to PDSE.
>... Anything else I should be looking closer at?
>
When an aliased PDS member is deleted, the aliases remain valid. For a
PDSE the aliases are automatically del
I recently converted several PSF libraries, resulting in a problem if a dasd
reorg moved the dataset while PSF tasks are up. PSF does not issue an enqueue
but has the dataset open. The volume reorg only checks for enqueue before
moving the dataset. Short term, we configed the reorg to skip PS
Why would this change, between PDS and PDS/E? Unless this is yet another
encounter with the pitfall os trying to share PDE/E outside Sysplex.
> -Original Message-
> From: IBM Mainframe Discussion List On
> Behalf Of David Purdy
> Sent: Tuesday, October 22, 2019 2:20 PM
> To: IBM-MAIN@LIS
I know there was a lot of discussion on this, but my
searches have not been fruitful.
I had a link to the last published OS/390 (V2R10) doc,
but can't seem to find it on the IBM web site any more.
Does anyone happen to have a pointer to it?
- Many thanks! -
- Dave Rivers -
--
riv...@dignus
I tried to transfer a bunch of it to archive.org (Wayback machine) but
noticed later some of it had been deleted. Try searching there. If you
don't find what you are looking for let me know and I will see if happen to
have a copy of it.
On Tue, Oct 22, 2019, 7:21 PM Thomas David Rivers wrote:
>
Dave, you may want to try the "IBM Publications Center":
https://www-05.ibm.com/e-business/linkweb/publications/servlet/pbi.wss
It helps if you know the publication number, but there is also a search
function available.
HTH
Klaus
-
Have you checked the IBM Publications Center? I see what looks like all the
OS/390 V2R10 publications there.
https://www-05.ibm.com/e-business/linkweb/publications/servlet/pbi.wss
Timothy Sipp
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