Re: Changeing records in a big file

["Chris Beck" <CBeck@xxxxxxxxxxxx>]

Well thanks to all who had ideas.   I just used a couple of them.  I just 
adjusted it to search for the most stringent search first, and took the K out 
of the F spec.   and brought the time down from 4 hours to 20 minutes.   

Thanks for all your expertise 

>>> chayden@ORIENTAL.COM 02/07/00 07:34AM >>>


is there a logical that is keyed by the criteria you need?
if there is a key that can be used, why wouldn't you use SETLL?
try the OPNQRYF command with OVRDBF SHARE(*YES)








"Chris Beck" <CBeck@good-sam.com> on 02/04/2000 03:43:02 PM

Please respond to RPG400-L@midrange.com 
                                                                                
                                                                                
                                                                                


                                                              
                                                              
                                                              
 To:      RPG400-L@midrange.com                               
                                                              
 cc:      (bcc: Chris Hayden/OTC)                             
                                                              
                                                              
                                                              
 Subject: Changeing records in a big file                     
                                                              








I have a 4 million record file that I need to change some records in if they
meet certain criteria.   What are some things I can do to speed this up.
obviously sequential reading of the file is out of the question at over 4 hours
to run.  I would prefer not to use the SETLL if possible,  because I don't want
to have to go in to the file and see what record to start with.


thanks for any help.

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