RE: Can you use UDS but NOT lock the data area?

[Michael Gottlieb <gottlm@xxxxxxxxx>]

Yes, there are both batch and online programs that need the info in the DTAARA.

Joe Giusto <jgiusto@xxxxxxxxxxxxxx> wrote:I am a little behind in reading 
emails, but had to ask:
Why does it matter that you are locking up your local data area? are there
other programs in the stack trying to read it? 


-----Original Message-----
From: Booth Martin [mailto:Booth@xxxxxxxxxxxx] 
Sent: Wednesday, July 02, 2003 7:19 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: Can you use UDS but NOT lock the data area?

Scott, it should work to use the UDS so long as you also use the keyword
DTAARA(*LDA). The line below is copied straight from the manual.


D LDA_DS UDS DTAARA(*LDA) 

Then you can lock and unlock the data area at will.

---------------------------------------------------------
Booth Martin http://www.MartinVT.com
Booth@xxxxxxxxxxxx
---------------------------------------------------------

-------Original Message-------

From: RPG programming on the AS400 / iSeries
Date: Wednesday, July 02, 2003 12:06:26 AM
To: RPG programming on the AS400 / iSeries
Subject: Re: Can you use UDS but NOT lock the data area?


On Tue, 1 Jul 2003, Michael Gottlieb wrote:
>
> It seems when I use "UDS" to define a data area to my program, the data
> area is locked for the duration of the program. Is there a way to
> prevent this? I still want to use UDS but not lock the data area.
>

When you define a data area using UDS, the RPG program will read it
automatically when the program starts, lock it, and update/unlock it
only when the program ends. That's what UDS is for.

If you want to read a data area without doing that, use the IN & OUT
RPG op-codes instead of UDS.

Here's an example of that:

D LDA DS DTAARA(*LDA)
D RptDate 1 8A
D RptType 105 106A

D MyDtaAra DS 200 DTAARA('QGPL/MYDTAARA')
D LastRun 1 8A
D LastRptType 105 106A

** Load the LDA. This does not lock it.
c in LDA
c dsply RptDate
c dsply RptType

** Load My Data Area. This does not lock it.
c in MyDtaAra
c dsply LastRun
c dsply LastRptType

** Load My Data Area again, this time lock it and update it.
c *lock in MyDtaAra
c eval LastRun = RptDate
c eval LastRptType = RptType
c out MyDtaAra

c eval *inlr = *on
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Michael Gottlieb  
gottlm@xxxxxxxxxxxxx
gottlm@xxxxxxxxx
 
Out of every 10 people, one understands binary, the other doesn't.
 



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