Automate Flash Copy : DS8800

2013-11-02 Thread Jake anderson
Hello All,

Is there an opportunity to automate the flash copy in DS8800 using Tivoli
storage productivity center for replication ?

Jake

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Re: Serialization without Enque

2013-11-02 Thread Jon Perryman
As a last resort, a GRS latch could be used.

Jon Perryman.



>
> From: Tony Harminc 
>
>
>
>On 1 November 2013 16:22, Donald Likens  wrote:
>> I have a situation where I need to serialize processing and cannot use CDS 
>> because the two addresses being updated cannot
>> be next to each other (because I use CDS with these two addresses with other 
>> addresses).
>
>CDSG, perhaps?
>

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Re: Serialization without Enque

2013-11-02 Thread Rob Scott
I think the OP stated that his code could hold locks - in which case the latch 
services cannot be used.

Rob Scott
Lead Developer
Rocket Software
77 Fourth Avenue . Suite 100 . Waltham . MA 02451-1468 . USA
Tel: +1.781.684.2305
Email: rsc...@rs.com
Web: www.rocketsoftware.com

-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Jon Perryman
Sent: 02 November 2013 19:30
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Serialization without Enque

As a last resort, a GRS latch could be used.

Jon Perryman.



>
> From: Tony Harminc 
>
>
>
>On 1 November 2013 16:22, Donald Likens  wrote:
>> I have a situation where I need to serialize processing and cannot 
>> use CDS because the two addresses being updated cannot be next to each other 
>> (because I use CDS with these two addresses with other addresses).
>
>CDSG, perhaps?
>

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TESTAUTH LISTPSW not displaying CC for TAR

2013-11-02 Thread MichealButz
Hi,

 

I am running a program under TESTAUTH which executes the TAR instruction,
after executing the inst under TESTAUTH I do a LISTPSW the CC is always 0

Well the DOC says in the ALET is 0 then a CC should be set at 8

 

I run the following instruction under TESTAUTH

  LAM   AR5,AR5,=F'0' 

  TAR   AR5,AR5   

  BC8,OKAY

  NOP   OKAY  

 OKAY DS0H

I then a do a LISTPSW and 

LAM   AR5,AR5,=F'0' 

  TAR   AR5,AR5   

  BC8,OKAY

  NOP   OKAY  

 OKAY DS0H

 

 IKJ57652I PSW LOCATED AT 8DD3F8 

   XRXXXTIE   KEY  XMWP  AS CC  PROGMASK  EA BA  INSTR ADDR  

   01118   1101  00 00 0  1   00065EB6 

 

According to the doc the CC should be a 8

 

Resulting Condition Code:

0 Access-list-entry token (ALET) is 

 hex

1 ALET designates the dispatchable-unit access

 list and does not cause exceptions in accessregister

 translation (ART)

2 ALET designates the primary-space access

 list and does not cause exceptions in ART

3 ALET is 0001 hex or causes exceptions

 in ART


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Re: Security exposure of zXXP was Re: zIIP simulation

2013-11-02 Thread Peter Relson
>SRB's are a big security exposure so customers are unlikely to open them 
to their programmers. 

SRBs are the same level of security exposure that APF-authorized tasks 
are. So if an application is already APF-authorized, switching to enclave 
SRBs is not intrinsically more of a security exposure than already 
existed. It is true that SRBs are more likely to tend to be key 0 than 
authorized tasks, but that is not a security exposure. That is a "greater 
potential for screwing up a system due to overlay of something critical" 
exposure.

>Is the code that runs under the ZIP and ZAP
>process code that normally run without any privileges in a problem
>state?

Only if the perpetrator is irresponsible. It is far from unheard of to 
have to take an application written to be unauthorized and make it 
authorized. But if anyone thinks it is as simple as changing the linkedit 
characteristic to AC=1 and placing it in an APF-authorized library, then 
they need to be re-educated (and quickly if they're the one responsible 
for the implementation).

Peter Relson
z/OS Core Technology Design

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Re: Serialization without Enque

2013-11-02 Thread Peter Relson
If you have the luxury of requiring a zEC12 and z/OS 2.1 (not under z/VM): 
constrained transaction. 

Otherwise, as has been suggested, PLO CSDST(G)
In a lot of PLO implementations that I have seen, the "CS" is on a 
sequence number that is incremented on each relevant operation, then the 
"stores" are the items that you truly want to serialize.
 
Peter Relson
z/OS Core Technology Design

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Re: TESTAUTH LISTPSW not displaying CC for TAR

2013-11-02 Thread Tony Harminc
On 2 November 2013 21:47, MichealButz  wrote:

[cleaned up messy, space-wasting  quoting]

> I am running a program under TESTAUTH which executes the TAR instruction,
> after executing the inst under TESTAUTH I do a LISTPSW the CC is always 0
>
> Well the DOC says in the ALET is 0 then a CC should be set at 8

>XRXXXTIE   KEY  XMWP  AS CC  PROGMASK  EA BA  INSTR ADDR
>01118   1101  00 00 0  1   00065EB6

I think you don't understand the mapping of condition codes in the PSW
to masks in the various branch instructions.

> According to the doc the CC should be a 8

> Resulting Condition Code:
>
> 0 Access-list-entry token (ALET) is  hex
>
> 1 ALET designates the dispatchable-unit access list and does not cause 
> exceptions in access register translation (ART)
>
> 2 ALET designates the primary-space access list and does not cause exceptions 
> in ART
>
> 3 ALET is 0001 hex or causes exceptions in ART

Hint: do you see a mention of CC 8 in what you just quoted?

Tony H.

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Re: Automate Flash Copy : DS8800

2013-11-02 Thread Brian Westerman
Our SyzCMD/z product is used to automate the process at a bunch of sites, so 
I'm sure that Tivoli can do it as well.  The process is really simple to 
automate.  We are a ton cheaper than Tivoli, but capability wise we are fairly 
equal.

Brian Westerman
Syzygy Incorporated

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