Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
READ WORK FILE in Natural Processing

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> Java & MQSeries
View previous topic :: :: View next topic  
Author Message
sumitha

New User


Joined: 10 Sep 2007
Posts: 4
Location: Chennai

PostPosted: Tue Oct 16, 2007 12:00 pm    Post subject: READ WORK FILE in Natural Processing
Reply with quote

Hi,

I have a jcl which processes a work file with some 2 lakh records. Can someone tell me the most efficient way to read the records from work file so that the CPU time will be reduced. I have read in some documents that READ WORK FILE RECORD option will improve CPU performance. Are there any other options which we can use. (Similar to MULTI-FETCH/PRE-FETCH for Adabas file read)
Back to top
View user's profile Send private message

ofer71

Global Moderator


Joined: 27 Dec 2005
Posts: 2360
Location: Israel

PostPosted: Tue Oct 16, 2007 3:31 pm    Post subject:
Reply with quote

First, I don't know what you mean by "lakh", but I assume it's something with amount.

Indeed, specifying the RECORD clause will cause the file processing to be faster, because in this case NATURAL won't perform any data checking.

As far as I know, there are no other methods of reading a work file faster.

If your file is really big (again, what is "lakh"?), you might consider loading the data (temporarily) into an ADABAS file and reading this file from NATURAL.

O.
Back to top
View user's profile Send private message
dr_te_z

New User


Joined: 08 Jun 2007
Posts: 71
Location: Zoetermeer, the Netherlands

PostPosted: Tue Oct 16, 2007 3:48 pm    Post subject:
Reply with quote

The optimization takes place in your JCL: DCB parameters, place on fast DASD etc
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> Java & MQSeries All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts Execute JCL step based on the content... sprikitik JCL & VSAM 2 Tue Oct 03, 2017 10:03 am
This topic is locked: you cannot edit posts or make replies. PS file data should be passed as symb... d_sarlie JCL & VSAM 15 Tue Oct 03, 2017 5:18 am
No new posts Garbage on output file Hervey Martinez SYNCSORT 4 Wed Sep 27, 2017 12:50 am
No new posts File Aid tool to compare numeric data balaji81_k Compuware & Other Tools 2 Tue Sep 26, 2017 3:35 am
No new posts Compare yesterday's date to the one o... migusd SYNCSORT 11 Fri Sep 22, 2017 11:35 pm

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us