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My thanks to all of you that responded!



Basically, I read the responses as positive towards REUSEDLT(*YES). There are some things to be aware of, such as RRN processing, etc.



I appreciate this forum and the wealth of experience and opinions that I find here.



I will be using all of your input to support the idea of making this change in our shop.



Steve Needles





-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jack Kingsley
Sent: Tuesday, September 10, 2013 12:49 PM
To: Midrange Systems Technical Discussion
Subject: Re: REUSEDLT(*NO) vs. REUSEDLT(*YES)



What about re-using deleted record space with a file that is setup as *NOMAX.





On Tue, Sep 10, 2013 at 1:33 PM, Needles,Stephen J < SNEEDLES@xxxxxxxxxxxxxxxx<mailto:SNEEDLES@xxxxxxxxxxxxxxxx>> wrote:



We are having an internal debate to reuse deleted records or not. The

most recent info I can find on the subject dates back to V5R4, we are

on V7R1.



Here are a few of the issues that I am aware of REUSEDLT(*YES) will...





- Cause arrival sequence processing to require attention.





- SQL cursors without an ORDER BY will give data in seemingly

random order according to the SQE's implementation of the request

(don't ask how we were bit by this :))





- May cause problems concerning access path maintenance, thus

potentially impacting performance (as of V5R4, this did not appear to

be an issue any longer?).





- Modernizing the DB to DDL (from DDS) will result in tables that

are REUSEDLT(*YES) by default as the CREATE TABLE SQL does not have

provision for restricting deleted row reuse.





- Does not completely exclude the need for periodic RGZPFM to be

run on the tables.



The question is... with enhancements to the SQE in V7R1 and

such...will

REUSEDLT(*YES) provide a significant lessening of the need for RGZPFM

(perhaps annually or monthly versus weekly on select tables) without a

performance problem over time?



Steve Needles



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