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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58 IMS in the Parallel Sysplex, Volume I: Reviewing the IMSplex Technology
When released
It is released when IMS quits the IRLM, at IMS termination.
Requestor
The requestor is the IMS system.
Resource
There is only one resource for the command lock. It identifies this as the command lock.
Private attribute
The attribute
private
is not used with the command lock.
Known attribute
The attribute
known
is not used with the command lock.
Level
Level 2 is always used.
3.6 Fast Path DEDB locking overview
Fast Path also uses locking to provide integrity, but it uses different locks. Its most commonly
used locks are on control intervals and units of work (UOWs). They are used both to prevent
access to uncommitted updates and to serialize updates to control ...
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