W

WADS
See write ahead data set (WADS).
WAN
See wide area network (WAN).
warm keypoint
A keypoint written to the restart data set during controlled shutdown (after all system activity has ceased). During a subsequent warm restart, information in the warm keypoint is used to reestablish system tables to the status they had at controlled shutdown. See also keypoint.
warm start
Initialization of a CICS system using selected system status information obtained during the previous termination.
WCC
See write control character (WCC).
WebSphere Application Server
Web application server software that runs on a Web server and that can be used to deploy, integrate, execute, and manage e-business applications.
wide area network (WAN)
A network that provides communication services between devices in a geographic area larger than that served by a local area network or a metropolitan area network. A WAN may use or provide public communication facilities. See also local area network.
worker JVM
A JVM that shares the class cache owned by the master JVM, and can be used to run Java programs. A worker JVM has the option CLASSCACHE=YES specified in its JVM profile.
working set
(1) The parts of a program's executable code, data areas, or both that are being used intensively and are therefore important to keep in the fastest possible type of storage. Thus a program's instruction cache working set is the set of program cache lines that need to be kept in the instruction cache if the program is to run at maximum speed.
(2) The amount of real storage required in order to avoid excessive paging.
workload
(1) Work to be tracked, managed and reported as a unit.
(2) A group of service classes.
workload management
In CICS, a method of optimizing the use of system resources by spreading workload as evenly as possible between different regions. For more details about managing workload in a CICSplex, see the CICS Transaction Server Dynamic Transaction Routing in a CICSplex manual.
workload management mode
The mode in which workload management manages system resources in an MVS image within a sysplex. The mode can be either compatibility mode or goal mode.
workstation
A functional unit at which a user works. A workstation often has some processing capability.
write ahead data set (WADS)
In DBCTL, a data set that contains log records that reflect committed operations but are not yet written to an online log data set (OLDS).
write control character (WCC)
(1) A control character that follows a write command in the 3270 data stream and provides control information for executing display and printer functions.
(2) A character used with a write-type command to specify that a particular operation, or combination of operations, is to be performed at a display station or printer.
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