IBM OS/390 User Manual
LPAR
Logically PARtitioned mode
LRECL
Logical RECord Length
LRU
Least Recently Used, Line
Replaceable Unit
Replaceable Unit
LSPR
Large Systems Performance
Reference
Reference
LSR
Local Shared Resources
LTM
Local Transport Mechanism
LU
Logical Unit
LUP
Logical User Profile
MAPS
SNA Network Interconnecting
Package
Package
MAS
Multi-Access Spool
MB
M e g a B y t e
MCS
Multiple Console Support
MCSOPER
MVS Console Support
OPERator
OPERator
MCT
Master Control Table
MGCR
Master Get Command
Routine
Routine
MIH
Missing Interruption Handler
MPF
Message Processing Facility
MQI
Message Queue Interface
MQSERIES
Messaging and Queuing
SERIES
SERIES
MRO
Multi-Region Operation
MS
Migration System
MSHP
Maintain System History
Program
Program
MVS
Multiple Virtual Storage
MVS/BDT
Multiple Virtual Storage/Bulk
Data Transfer
Data Transfer
MVS/DFP
Multiple Virtual Storage/Bulk
Data Transfer
Data Transfer
MVS/ESA
Multiple Virtual
Storage/Enterprise Systems
Architecture
Storage/Enterprise Systems
Architecture
MVS/RSU
MVS Recommended Service
Upgrade
Upgrade
NCP
Network Control Program
NDF
Network Definition Facility
NFS
Network File System
NJE
Network Job Entry
NSR
Network Service Request
OC
Operator Communication
OCCF
Operator Communications
Control Facility
Control Facility
OCO
Object Code Only
OE
Order Entry
OEM
Original Equipment
Manufacturer
Manufacturer
OGL
Overlay Generation Language
OLPD
On-Line Problem
Determination
Determination
ONC
Open Network Computing
OPC
Operations, Planning &
Control
Control
OPR
OPeRations
OPTCD
OPtional Control Program
Service
Service
OS
Operating System
OS/2
Operating System/2
OS/390
Operating System/390
OS/VS
Operating System/Virtual
Storage
Storage
OSA
Multi-Access Spool
OSA
Open Systems Adapter
OSF
Operational Support Facility
OUTLIM
OUTput LIMiting facility
PARMLIB
PARaMeter LIBrary
PC
Personal Computer
PCB
Program Control Block
PCCU
Primary Communication
Control Unit
Control Unit
PCLK
Personal Computer Link
Feature
Feature
PCT
Program Control Table
PDB
Page Description Block
PDF
Process Control Block
PDS
Partitioned Data Set
PEND
POWER END
PER
Program Event Recording
PERT
Program Evaluation and
Review Techniques
Review Techniques
PIOCS
Physical Input Output Control
System
System
PKZIP
A data Compression Program
PL/1
Programming Language 1
PL/I
Programming Language 1
PLT
Program List Table
POWER
Priority Output Writers,
Execution processor, and
input Readers
Execution processor, and
input Readers
List of Abbreviations
587