March 2003
Intermediate to advanced
282 pages
9h 13m
English
book
IMS in the Parallel Sysplex Volume I: Reviewing the IMSplex Technology
by Jouko Jantti, Juan Jesœs Iniesta Mart’nez, Knut Kubein, Bill Stillwell, Gary Wicks
Content preview from IMS in the Parallel Sysplex Volume I: Reviewing the IMSplex Technology
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234 IMS in the Parallel Sysplex, Volume I: Reviewing the IMSplex Technology
Deferred ACB open
When IMS is started, the VTAM ACB is opened and logon requests flow. These requests will
be queued until a
/START DC command is issued.
In some emergency restart scenarios, the
/START DC may not be effective until all the
necessary log records are processed. Some devices like ATMs may logon to IMS, and these
sessions will queue until the
/START DC has completed. This increases the possibility that
these remote devices will time-out before IMS can accept the logon request.
To resolve this, the IMS parameter VACBOPEN within the DFSDCxxx member of PROCLIB
has been provided. This parameter determines whether IMS will open the VTAM ACB at
startup, or defer ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.