December 2006
Intermediate to advanced
228 pages
6h 20m
English
book
Introduction to the New Mainframe: Large-Scale Commercial Computing
by Mike Ebbers, Pilar Gonzalez Adrados, Frank Byrne, Rodney Martin, Jon Veilleux
Content preview from Introduction to the New Mainframe: Large-Scale Commercial Computing
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Appendix B. Glossary 187
local system queue area (LSQA). In z/OS, one or
more segments associated with each virtual storage
region that contain job-related system control
blocks.
lock structure. A Coupling Facility structure that
enables applications in a sysplex to implement
customized locking protocols for serialization of
application-defined resources. The lock structure
supports shared, exclusive, and application-defined
lock states, as well as generalized contention
management and recovery protocols.
logical control unit (LCU). A single control unit
(CU) with or without attached devices, or a group of
one or more CUs that share devices. In a channel
subsystem (CSS), an LCU represents a set of CUs
that physically or logically attach I/O ...
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