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For example:
27993 (BLKSIZE) * 60 (BUFNO) * 5 (Parallel) = 8,397,900 KB = 8.2 MB
=> If the maximum size of virtual private storage below 16MB line is 8 MB, a job must abnormally terminate with S878-10.
Refference:
1. DFSORT: Summary of Changes by Release
https://www-01.ibm.com/support/docview.wss?uid=isg3T7000084&aid=1
"A program that invokes DFSORT, ICETOOL or ICEGENER will now be able to exploit the High PerformanceFicon (zHPF) hardware. When zHPF is available, DFSORT SORT or MERGE applications will use BSAM forSORTIN, SORTOUT and OUTFIL data sets."
2. z/OS DFSMS Using Data Sets: Managing SAM Buffer Space
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.2.0/com.ibm.zos.v2r2.idad400/bufaq.htm
"If the system builds the buffer pool for a BSAM user, the buffer pool resides below the 16 MB line."
3. DFSORT development comment in CSP Case #TS002838843
"I confirmed this to DFSORT development. He said DFSORT use all the information it is available at run time. So, if a previous PGM/process ready the DCB for input with specific BUFNO, DFSORT OPEN the INPUT with that DCB. As a result, buffer pool is obtained using provided blocksize and bufno.(if zHPF is enabled)"
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This new parameter is required for customer.
New parameters, QSAM-BUFFERS ( bufno_seq , bufno_sortin ) and BUFNO for SORTIN sequential QSAM (VUM038/QSSBUFNO) were provided by PH21188.
UI69029 v5.1
UI69013 v4.3
I agree
This request should be a mandatory matter in HPU.