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Performance Tuning and Cost Saving

 
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abracadabra
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Joined: 02 Sep 2003
Posts: 101
Topics: 55
Location: India

PostPosted: Wed Jul 20, 2005 9:08 am    Post subject: Performance Tuning and Cost Saving Reply with quote

Hi,

I am sure there are a lot of opportunities to improve the performance of the application once is working on and also save costs.

VEry recently I gave a proposal to change my present compiler version from COBOL2 to ENT COBOL as this would save considerable cost, more so because all other applications except mine use ENT COBOL.

The backup jobs in my application were taking backups of all available files inspite of having probably done so the previous week. So same files which had not been modified were getting backed up repeatedly. The Reference Date check should take care of this and improve the performance of the jobs considerably.

The other possible performance tuning option is to get the SORT step out of the program into the JCL if possible.

Is there any link to find out more such possible options of proposals and perfromance tuning? Will appreciate any help.

Thanks
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dtf
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Joined: 10 Dec 2004
Posts: 110
Topics: 8
Location: Colorado USA

PostPosted: Wed Jul 20, 2005 9:56 am    Post subject: Reply with quote

Don't know about a link, but one of the best performance enhancements I have ever seen is BLSR for KSDS VSAM. In jobs where there is a lot of random processing, use of this facility can have an amazing impact on processing times.

I have seen jobs that were taking hours to run go to running in minutes. All that is required is some fairly simple JCL changes.
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Last edited by dtf on Tue Feb 01, 2011 1:59 pm; edited 1 time in total
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abracadabra
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Location: India

PostPosted: Sun Jul 24, 2005 9:37 pm    Post subject: Reply with quote

Hi,

Do you have any link on BLSR? I gave a search in the VSAM Reference manual and did not get any hit.

Thanks
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dtf
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PostPosted: Mon Jul 25, 2005 2:25 pm    Post subject: Reply with quote

here is a link http://search390.techtarget.com/tip/1,289483,sid10_gci757616,00.html
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Last edited by dtf on Tue Feb 01, 2011 2:00 pm; edited 1 time in total
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kolusu
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Joined: 26 Nov 2002
Posts: 12380
Topics: 75
Location: San Jose

PostPosted: Wed Jul 27, 2005 6:19 am    Post subject: Reply with quote

abracadabra,

*sigh* A simple search for "tuning" in the application programming forum could have answered your query

http://mvsforums.com/helpboards/viewtopic.php?t=1485&highlight=tuning

Kolusu
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