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CHOIX et IMPLANTATION DE SALLES INFORMATIQUES

MVS OS/390 z/OS, Network Contributors, Software pricing and bills - No Comments » - Posted on September, 6 at 1:43 pm

Infrastructures et architectures informatiques

Une réflexion sur la façon de choisir le type et le lieu  d’implémentation  de vos salles informatiques.

Pdf version (English) : on the way
Pdf ( français) :choix-de-salle

Bruno Sugliani
Consultant

L’implémentation d’une ou plusieurs salles informatiques est un exercice beaucoup plus périlleux qu’il n’y paraît et nécessite une démarche et une analyse aussi rigoureuse que minutieuse.
Tant sur le plan géographique que sur la qualité de l’infrastructure, il faut éviter les lieux communs qui ne reflètent absolument pas la réalité et qui trop souvent vous emmènent dans des investissements à très long terme dont on ne peut se sortir facilement par la suite.
Bien sûr le mètre carré sur le Larzac est nettement moins cher que sur Paris ou Lyon, mais est-ce une bonne raison pour s’y installer ?
Read the rest of this entry »

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PDF and performance

DB2 & CICS, MVS OS/390 z/OS, Network Contributors, Software pricing and bills - No Comments » - Posted on September, 1 at 10:33 am

I just realised recently that a lot of people were complaining about .pdf documentation.
PDF does not offer the same facilities in indexing and searching than the good old Book Manager format, but  worse, Adobe Acrobat is extremely slow and seems to be slower for each new release.
Since quite some time i have been using Foxit reader as a replacement.
I hooked it to my Firefox a long time ago and never looked back.
It must 10 times faster, 100 times lighter and still free.
What more would you want ? Why don’t you try ?
http://www.foxitsoftware.com/

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FTP à l’heure (on time)

MVS OS/390 z/OS - No Comments » - Posted on August, 7 at 8:04 pm

In order to get FTP to use and show ‘local’ time on the log instead of GMT…
This one is for Paris ( France)

//FTPD EXEC PGM=&MODULE,REGION=40M,TIME=NOLIMIT,
// PARM=(’POSIX(ON) ALL31(ON)’,
// ‘ENVAR(”TZ=CET-1CEST,M3.5.0,M10.5.0″)’,
// ‘/&PARMS’)

Easy and obvious  … no ?

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Software bill & Zcost

MVS OS/390 z/OS, Software pricing and bills - No Comments » - Posted on June, 15 at 9:13 pm

In order to reduce your bill you have several means:
Run the batch at night only .. yeah … been there :-))
Hardware capping ( not very elegant)
Sofware capping (this is really tough when it happens !)
Create a dummy CF LPAR weighted at exactly what you do not want to utilise and pay ( do not forget to put it in dysndisp=no ). Street legal !
Zcost ( look at the link on the right of the home page) is making your soft capping dynamic .
It is a software product working with CMF or RMF.
Basically it watches the 4 hours average and changes the soft cap values through the HMC API when it sees the neighbour ain’t doing much. It is a bit like HW weights but with only costs in mind .
Quite clever actually !
When we implemented it, we were considered as heroes ! I swear !
I can’t give you the amount of euros we saved, because it is confidential, but you definitely could buy a big german limo at the end of the year. For you and your wife !
With full features !

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IXC102A ( oh yes ! )

MVS OS/390 z/OS - No Comments » - Posted on June, 15 at 8:52 pm

Discussion intéressante ( IBM-MAIN)
Question to XCF lab
Why doesn’t (can’t) SFM prevent IXC102A after VARY XCF,sysname,OFFLINE if there is an active system in the same sysplex on the same CPC? It it just a SMOP, or is there a technical reason ?
Answer from lab
XCF only resets or deactivates an LPAR if told to do so by the SFM policy.
The SFM policy actions do not apply to V XCF commands. They only apply in status-update-missing scenarios.
And yet, if an SFM policy exists at all, no matter what it specifies, XCF will attempt to isolate the outgoing system on a V XCF command.
I don’t know why that is.
The rationale is not clearly documented in the code, and no one still associated with XCF development recalls why that implementation was chosen.
Clearly it was to encourage more migrations to parallel sysplex by eliminating the need for the “DOWN” reply thus selling more CFs. :-)
There is work in progress now to design more effective and consistent mechanisms for removing a system from the sysplex without operator intervention. It is highly desirable to eliminate operator prompting in this situation, because a great many outages have occurred over the years when
either (1) the operator or automation replies DOWN prematurely and data base corruption occurs as I described earlier, or (2) no one ever replies DOWN, and the sysplex begins to suffer from “sympathy sickness” because resources are held or protocols of one kind or another are impeded by the unresponsive
system.

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Software pricing on z/OS

MVS OS/390 z/OS, Software pricing and bills - No Comments » - Posted on June, 7 at 8:38 pm

CEMS, MLC, ESSO, OTC, fullcap, SCRT, WLC, Variable WLC, Passport advantage, IPLA

Ce que IBM crée, invente et change pour votre facturation ne simplifie pas nécessairement votre vie ou votre compréhension.
Si vous pensez avoir besoin d’éclaircissements, ou si vous voulez revoir entièrement votre système de facturation , n’hésitez pas, contactez moi .
1, 2, 5 ou 10 % sur une facture mensuelle de 500 k euros est quelque chose de possible, renseignez vous.

CEMS, MLC, ESSO, OTC, fullcap, SCRT, WLC, Variable WLC, Passport advantage, IPLA and whatever

These names just demonstrate IBM creativity in billing processes.
However in doing so IBM does not make your job easy and definitety confuses a lot of us.
If you believe you need some light in the matter in order to improve your understanding or if you think it is time to overhaul your billing processes in your shop, do not hesitate, contact me.
1,2,5 or 10% on a 500k euros monthly bill is something possible, ask around.

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Trial tools for CICS

DB2 & CICS, MVS OS/390 z/OS - No Comments » - Posted on June, 7 at 8:34 pm

Vous pouvez emprunter certains outils CICS :
You may borrow some CICS special tools :
www-306.ibm.com/software/os/systemz/trials/cicstools/

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Cookbook pour JZOS

DB2 & CICS, MVS OS/390 z/OS, Network Contributors - No Comments » - Posted on June, 7 at 8:32 pm

A new “JZOS Cookbook” package is now available on alphaWorks, which might be
of interest to those who would like to do Java development on z/OS.

www.alphaworks.ibm.com/tech/zosjavabatchtk

And then you may slowdown your mainframe.
Nah … Just a joke, but I have something against Java :-))

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AMATERSE error on large datasets

MVS OS/390 z/OS - No Comments » - Posted on June, 7 at 6:31 pm

You try to TERSE a big 2 or 3 Gbyte input file, and get IKJ56245I , “dynalloc error, not enough space on volume” message.
Tough luck, there is a FIN apar ( Fixed If Next release )
In fact OA22765, is closed FIN because there currently is a bypass.
“AMATERSE currently uses ddname TMPSPACE as an intermediate and asks whether that file has been preallocated.Supplying that ddname allocated to a large data set can circumvent the problem.”

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