RE: accessing the records in a history file

[Scott Mildenberger <Smildenber@xxxxxxxxxxxx>]

Booth,

Couple of thoughts.  Building logical(s) can help.  You can do a CHGQRYA
QRYTIMLMT(0) and run these reports interactively.  When the message comes up
take a C to cancel and then look in the job log.  If a logical will help
there will be a message in the job log telling you what key to build it
with.  A second thought is that you may be able to put the history records
in a history file that is identical to the current file.  Then periodically
move records that are older than some amount from the current to the history
file.  You then can create a logical to merge the records together which can
be used in programs that need to be able to see all the records such as an
inquiry program.

Scott Mildenberger

> -----Original Message-----
> From: booth@martinvt.com [mailto:booth@martinvt.com]
> Sent: Thursday, December 21, 2000 9:44 AM
> To: midrange-l@midrange.com
> Subject: accessing the records in a history file
> 
> 
> I'd like some insight from folks on this scenario:  There is 
> a history 
> file of records dating from 1994.  Records are added each day and now 
> there are 3.6 million records in the file.  The odds of 
> anyone going back 
> to look up something in 1994 are slim but management won't purge any 
> records.  Obviously the newest records are at the end of the 
> file.  All of 
> the logicals have the customer ID number as the first key. 
> One logical has 
> a key of the customer ID and then date and time.
> 
> Each business day there is at least one and sometimes five or 
> more reports 
> written for all activity during some recent time period (a 
> workshift, a 
> day, a week, whatever).
> 
> This process is becoming a performance pig; additionally 
> there is a need 
> for more function.   What sorts of suggestions do you people see as 
> possible enhancements to this?  SQLRPGLE? OPNQRYF? a new 
> Logical on date 
> and time alone? #GSORT?
> 
> Any suggestions are appreciated.  thanks in advance.
> 
> 
> _______________________
> Booth Martin
> Booth@MartinVT.com
> http://www.MartinVT.com
> _______________________
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