Re: RSVNONR again

2005-07-25 Thread Vernooy, C.P. - SPLXM
"R.S." <[EMAIL PROTECTED]> wrote in message
news:<[EMAIL PROTECTED]>...
> Peter Pfaffner wrote:
> >> Radoslaw wrote (partially quoted):
> >> As I understood the manual, the address space is marked as unusable 
> >> not to the end of life, but until all other address apces which 
> >> co-operated with my a/s are ended.
> >> Am I right ?
> > 



> 
> Peter,
> I agree, about DB2. However my question was rather general, not related 
> to any specific started task. Just general rule: can I find cross-memory 
> related tasks and would it help to restart those tasks. Obviously 
> sometimes restarting these related tasks is not an option, but maybe 
> sometimes it is.
> 
> -- 

Radoslaw,

I think you try to attack the problem from the wrong direction: 

Chris Craddock explained this one year ago:
"
Reusing the LX is a completely separate issue from reusing
the ASID. The ASID is made non-reusable because the address
space that owned it last owned a space switch LX (system or
not is irrelevant) -or- a more complicated situation exists
where there are secondary dependencies. IAC the LX can be
reused and the ASID not be.
"

The fact that an LX was published by an AS, implies that the AS has a chance
to be connected to at any time in the future. This cannot be
avoided/eliminated by shutting down XM asids. Possible only when the LX is
reused by another AS, this AS is freed from unintended XM connections and
might be reusable again.

Kees.


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Re: RSVNONR again

2005-07-25 Thread R.S.

Peter Pfaffner wrote:

Radoslaw wrote (partially quoted):
As I understood the manual, the address space is marked as unusable 
not to the end of life, but until all other address apces which 
co-operated with my a/s are ended.

Am I right ?


Well Radoslaw, AFAIK quite close, but far more complex.
Please let me try to explain.
For example you are running multiple DB2's all using RRS, it is not a 
good idea to stop RRS (SETRRS CANCEL) until ALL DB2's ended. As many 
other posters stated, it is not necessary to recycle DB2 every day.

And if a DBA is ignorant, just ignore it :-) No excuses.
It's not the job of a DBA to impact production without better knowledge.
We'er running heavy DB2 subsystems (all serving really rough SAP's ;-) 
for more than a year w/o recycling.
If anybody needs help for arguments please contact me offline 
(itpang1gmxde)


Peter,
I agree, about DB2. However my question was rather general, not related 
to any specific started task. Just general rule: can I find cross-memory 
related tasks and would it help to restart those tasks. Obviously 
sometimes restarting these related tasks is not an option, but maybe 
sometimes it is.


--
Radoslaw Skorupka
Lodz, Poland

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RSVNONR again

2005-07-24 Thread Peter Pfaffner

Radoslaw wrote (partially quoted):
As I understood the manual, the address space is marked as unusable not 
to the end of life, but until all other address apces which co-operated 
with my a/s are ended.

Am I right ?
Well Radoslaw, 
AFAIK quite close, but far more complex.

Please let me try to explain.
For example you are running multiple DB2's all using RRS, it is not a good idea 
to stop RRS (SETRRS CANCEL) until ALL DB2's ended. 
As many other posters stated, it is not necessary to recycle DB2 every day.

And if a DBA is ignorant, just ignore it :-) No excuses.
It's not the job of a DBA to impact production without better knowledge.
We'er running heavy DB2 subsystems (all serving really rough SAP's ;-) for more 
than a year w/o recycling.
If anybody needs help for arguments please contact me offline 
(itpang1gmxde)
Everybody is responsible for a particular job, not for the rest of the world ;-)
HTH Peter

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Re: RSVNONR again

2005-07-22 Thread Gil Peleg
Radoslaw,
This is a great ASM program that was published in MVS update:
http://www.xephon.com/cgi-bin/xephon3/licence/getcode.cgi?pubfile=November.2001&datafile=M182A08
 However, It only works up to OS/390 2.10.
To get it to work under z/OS you should modify it to use the correct offsets 
in the XMSE as described in the APAR Rob Scott pointed to.
 Gil.

 On 7/21/05, Rob Scott <[EMAIL PROTECTED]> wrote: 
> 
> Actually there is a little bit to it than that.
> 
> IBM very helpfully documented most of it in Info APAR - II08563
> 
>

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Re: RSVNONR again

2005-07-21 Thread Rob Scott
Actually there is a little bit to it than that.

IBM very helpfully documented most of it in Info APAR - II08563

-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of mf-system
Sent: 21 July 2005 12:54
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: RSVNONR again

Hi,

There is a Control Block named XMD (Cross Memory Directory).

Shy

-Original Message-
From: R.S. [mailto:[EMAIL PROTECTED] 
Sent: Thursday, July 21, 2005 5:38 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: RSVNONR again

As I understood the manual, the address space is marked as unusable not
to the end of life, but until all other address apces which co-operated
with my a/s are ended.
In other words, a/s A uses cross memory with a/s B. When A is ended it
is marked as unusable, until a/s B is also ended. Then both asid's are
'cleared'.
Am I right ?
(assumed yes)
Now the question:
How can I find out the 'partner' address spaces for my address space ?
Any control blocks ?

Assuming I have to recycle A, maybe the solution for me would be to find
B and recycle it also ?
I hope it is not MASTER 

--
Radoslaw Skorupka
Lodz, Poland

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Re: RSVNONR again

2005-07-21 Thread mf-system
Hi,

There is a Control Block named XMD (Cross Memory Directory).

Shy

-Original Message-
From: R.S. [mailto:[EMAIL PROTECTED] 
Sent: Thursday, July 21, 2005 5:38 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: RSVNONR again

As I understood the manual, the address space is marked as unusable not
to the end of life, but until all other address apces which co-operated
with my a/s are ended.
In other words, a/s A uses cross memory with a/s B. When A is ended it
is marked as unusable, until a/s B is also ended. Then both asid's are
'cleared'.
Am I right ?
(assumed yes)
Now the question:
How can I find out the 'partner' address spaces for my address space ?
Any control blocks ?

Assuming I have to recycle A, maybe the solution for me would be to find
B and recycle it also ?
I hope it is not MASTER 

--
Radoslaw Skorupka
Lodz, Poland

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Re: RSVNONR again

2005-07-21 Thread Rob Scott
MXI (www.rs.com/portfolio/mxi/) has the following two commands :

MDQ - The Memory Delete Queue - those ASIDs that have been marked
non-reus and the reasons why.

XM - Active Cross-Memory Connections - shows the active cross-memory
connections between address spaces in the system.

Both these commands require MXI to be running authorized at the code
involves snooping around control blocks in the PCAUTH address space.


SHOWMVS (www.cbttape.org) also has this functionality.

 

-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of R.S.
Sent: 21 July 2005 11:38
To: IBM-MAIN@BAMA.UA.EDU
Subject: RSVNONR again

As I understood the manual, the address space is marked as unusable not 
to the end of life, but until all other address apces which co-operated 
with my a/s are ended.
In other words, a/s A uses cross memory with a/s B. When A is ended it 
is marked as unusable, until a/s B is also ended. Then both asid's are 
'cleared'.
Am I right ?
(assumed yes)
Now the question:
How can I find out the 'partner' address spaces for my address space ?
Any control blocks ?

Assuming I have to recycle A, maybe the solution for me would be to find

B and recycle it also ?
I hope it is not MASTER 

-- 
Radoslaw Skorupka
Lodz, Poland

--
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RSVNONR again

2005-07-21 Thread R.S.
As I understood the manual, the address space is marked as unusable not 
to the end of life, but until all other address apces which co-operated 
with my a/s are ended.
In other words, a/s A uses cross memory with a/s B. When A is ended it 
is marked as unusable, until a/s B is also ended. Then both asid's are 
'cleared'.

Am I right ?
(assumed yes)
Now the question:
How can I find out the 'partner' address spaces for my address space ?
Any control blocks ?

Assuming I have to recycle A, maybe the solution for me would be to find 
B and recycle it also ?

I hope it is not MASTER 

--
Radoslaw Skorupka
Lodz, Poland

--
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html