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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Chapter 3. Data sharing integrity components 49
One IRLM or multiple communicating IRLMs indicated by the IRLMGRP parameter in the
IRLM start procedure.
SHARELVL=2 with one IRLM or SHARELVL=3 with multiple IRLMs.
The DBRC authorization process ensures that data sharing configuration rules are not
violated.
3.2.1 When authorization occurs
Authorization for a full function database occurs the first time the IMS subsystem accesses
the database at program specification block (PSB) schedule time, during application
initialization with the exception of HALDB databases. For HALDB, the authorization does not
occur at PSB schedule time, but later when it is referenced during partition selection
processing. Authorization processing for Fast Path DEDB ...
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