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What does it mean BUFNO=199 in JCL?


IBM Mainframe Forums -> JCL & VSAM
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madlui56

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Joined: 08 Aug 2006
Posts: 61
Location: Philippines

PostPosted: Thu Feb 15, 2007 2:18 pm
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//SORTOF03 DD DSN=WXX055.DLTFILE.CYCLE0.SORTED.FILE02,
// UNIT=SYSDA,BUFNO=199,
// DISP=(NEW,CATLG,DELETE),
// DATACLAS=STANDARD
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twissi

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Joined: 01 Aug 2005
Posts: 105
Location: Somerset, NJ

PostPosted: Thu Feb 15, 2007 2:53 pm
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Hi Louielee,

It is basically the number of buffers to be allocated to a file being opened.

Here is the * MVS/QuickRef 6.5 * explanation for the same:

Quote:
Supplies the number of buffers to be assigned
for this file when it is opened. The maximum is
255 or the value dictated by the region size.
Valid for all access methods except TCAM & GAM.


I think the default value changes with the access methods, for QSAM it's 5.

Thanks,
Twissi.
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