The following conditions are required before an application environment
can be used:
- The work manager subsystem must have implemented the workload management services
that make use of application
environments. Examples
of IBM-supplied work managers that use application environments are:
- DB2® (subsystem type DB2)
- SOMobjects® (subsystem
type SOM)
- WebSphere Application Server (subsystem CB)
- Internet Connection Server, Domino® Go
Webserver, or IBM® HTTP Server
Powered by Domino (IHS powered by Domino)
- MQSeries® Workflow (subsystem
type MQ)
Refer to subsystem documentation to determine if the subsystems
used in your installation make use of application environments.
- One or more application environments must be defined in the workload
management service definition. The subsystem reference information
should provide guidance for logically grouping applications into application
environments.
- The subsystem's work requests must be associated with the appropriate
application environment. This step is unique for each subsystem and
should be described in the subsystem reference information.
If you request through the service definition that server address
spaces be automatically managed, workload management starts
and stops server spaces as needed. For example, when a DB2 stored procedure request comes into the system, workload management determines
whether there is a server address space to process the work, and if
there is, makes the work available to the server. If there is no server
address space available, workload management creates
one.
Table 1 shows the IBM-supplied
subsystems that use application environments, the types of requests
made by each subsystem, and where the subsystem stores the information
that maps the work to application environments.
Table 1. IBM-supplied Subsystems
Using Application Environments| Application Environment Subsystem
Type |
Request Type |
Application Environment Mapping |
|---|
| CB |
WebSphere Application Server object
method requests |
Server group name |
| DB2 |
Stored procedure requests |
DB2 SYSIBM.SYSROUTINES
catalog table |
| IWEB |
Hyper Text Transfer Protocol (HTTP)
requests |
Web configuration file |
| MQ |
MQSeries Workflow
requests |
MQ process definition for the WLM-managed
queue (APPLICID) field |
| SOM |
SOM client object class binding requests |
Implementation repository |