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Performance tuning of a existing batch job

 
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Baskaran
Warnings : 1

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Joined: 24 Oct 2006
Posts: 32
Location: India

PostPosted: Tue Oct 24, 2006 1:46 pm    Post subject: Performance tuning of a existing batch job
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I have request to do a performance tuning of a exixting batch job:

Function of this job:

unload a data from a VIEW then sort it and load to a different table.


unload step :
//UI66UNL1 EXEC PROC=PLPUNLOD,
// OUTDSN=PLP.INFODB.DATA1066.EXTRACT(+1),
// SYSIN=UI66UNL1, * VLP_TXNHIST_EXT1066
// UNLDTME=60
//UNLOAD.SYSREC00 DD DSN=PLP.INFODB.DATA1066.EXTRACT(+1),
// DISP=(NEW,CATLG),
// UNIT=PROD,DATACLAS=MULTIVOL,
// SPACE=(CYL,(1500,15),RLSE),BUFNO=30,
// DCB=(PTS.MODEL,RECFM=FB,LRECL=223)

sort step:

FIELDS=(7,2,CH,A,19,2,CH,A,39,10,CH,A,27,7,PD,A,1,6,PD,A)

load step:
//LOAD9015 EXEC PROC=PLPLOAD1,
// COND.LOAD=(0,NE,PLPDLI28.SORT1015),
// INDD=PLP.INFODB.DATA1015.SORTED(+1),
// MEMBER=IFPL9015,
// SYSTEM=PDB2,
// UTPROC='',
// SPACE1='(CYL,(200,20),RLSE)', * WORKING SPACE(INDEX)
// UID='PLPNGEC0'


My question:

What i should do to fine tune this job so it take less time to complete
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expat

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Joined: 14 Mar 2007
Posts: 8593
Location: Back in jolly old England

PostPosted: Fri Mar 23, 2007 2:06 pm    Post subject:
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Quote:
// DCB=(PTS.MODEL,RECFM=FB,LRECL=223)


CODE RECFM=FB,LRECL=223

As I have said many times on help boards, a model / pattern DSCB is not required for ANY GDG being created. Go talk to your storage people and ask them to set up a dummy DATACLAS to be allocated to ALL GDG datasets being created, DASD, Tape, SMS, NONSMS.

Makes life so much easier. Your model DSCB may have a BLKSIZE of 233 which would be a performance pain.
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