I would say that BSAM is a lot more complicated than QSAM. Whether the small
performance advantage is worth extra debugging effort and disruption to
production has to be factored in to the choice. In my personal view, it's
almost never worth the extra hassle.
Note however that some very specific I/O situations require BSAM. One example
that occupied a recent thread here is FBS ('standard') files, where a specific
record can be assumed to occupy a certain spot in a specific block because
there are no 'short' blocks before the last. This is logically similar to
Direct Access DSORG. Very few applications have such a requirement.
.
.
J.O.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
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-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of Joseph Reichman
Sent: Friday, February 03, 2017 10:51 AM
To: [email protected]
Subject: (External):BSAM vs QSAM
Hi
BSAM is a bit more complex than QSAM
Is there any performance improvement
Thanks
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