Hello, we have a job that was previously using Innovation's IAM file access
method. The file is over 6 million records. The job runs twice yearly and
usually takes an hour or less to complete. The product was removed to save on
SW costs, and the file was converted to VSAM. The programmer
[mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Brown, Larry - RD, St. Louis, MO
Sent: Thursday, July 19, 2012 3:22 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Problem Going to VSAM from IAM
Hello, we have a job that was previously using Innovation's IAM file access
method. The file is over 6 million
@LISTSERV.UA.EDU
Subject: Problem Going to VSAM from IAM
Hello, we have a job that was previously using Innovation's IAM file access
method. The file is over 6 million records. The job runs twice yearly and
usually takes an hour or less to complete. The product was removed to save
on SW costs
: Problem Going to VSAM from IAM
From original post, the job in question is only reading the file.
Any updates are done elsewhere, which at this point haven't yet been
described as a performance issue. BLSR Deferred writes could be useful
in other cases (not here) when a large number of updates
-
From: Brown, Larry - RD, St. Louis, MO [mailto:larry.bro...@stl.usda.gov]
Sent: Thursday, July 19, 2012 8:22 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Problem Going to VSAM from IAM
Hello, we have a job that was previously using Innovation's IAM file access
method. The file is over 6 million
: Re: Problem Going to VSAM from IAM
Larry,
Your dd statement specifies space for 100 data buffers (4096 x 100 =409600) but
you then specify bufnd=181, which is one cyl for a 4096 CI size, plus Bufni=9.
I would lose the bufsp parameter and let VSAM allocate buffers according to the
Bufnd
-MAIN@LISTSERV.UA.EDU
Subject: Re: Problem Going to VSAM from IAM
Larry,
Your dd statement specifies space for 100 data buffers (4096
x 100 =409600) but you then specify bufnd=181, which is one
cyl for a 4096 CI size, plus Bufni=9. I would lose the bufsp
parameter and let VSAM allocate
: 314.457.4939
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of O'Brien, David W. (NIH/CIT) [C]
Sent: Thursday, July 19, 2012 7:42 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Problem Going to VSAM from IAM
Larry,
Your dd statement specifies