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3.2 Install Application
This section lists the steps that are required to deploy the OHI Components application on the Oracle Fusion Middleware WebLogic Server (WebLogic).
3.2.1 Creating WebLogic Work Managers
By default, WebLogic Server uses the default work manager to handle thread management and perform self-tuning. This default Work Manager is used by an application when no other Work Managers are specified in the application’s deployment descriptors. For more information, check the WebLogic documentation on Work Managers.
However, it is recommended to use the following application-specific work managers:
- a work manager to control UI requests, named "wm/ui-work-manager"
- a work manager to control Web Services requests, named "wm/ws-work-manager"
- and a work manager to control task or activity processing, named "wm/core-work-manager"
This allows more fine-grained control and work load monitoring of the system.
These work managers are configured by the WLST scripts as part
of creating a new domain. For an existing domain the work managers need to be
configured manually.
If these work managers are not configured, the system issues warnings at startup
like the following example and will use the WebLogic default work manager
instead:
<Warning> <WorkManager> <BEA-002919> <Unable to
find a WorkManager with name wm/core-work-manager. Dispatch policy
wm/core-work-manager will map to the default WorkManager for the application
OHI-Vbp-2.x.x.x.x>
Create global work managers through the Administration Console using the steps that are listed in the following table in the given order. Make sure to associate the work managers with the managed servers.
|
Step |
Configuration |
Value |
|---|---|---|
|
1 |
Minimum Threads Constraint |
|
|
Name |
core-work-manager-min-threads-constraint |
|
|
Count |
16 |
|
|
2 |
Maximum Threads Constraint |
|
|
Name |
core-work-manager-max-threads-constraint |
|
|
Count |
16 |
|
|
3 |
Fair Share Request Class |
|
|
Name |
core-work-manager-fair-share-req-class |
|
|
Fair Share |
40 |
|
|
4 |
Work Manager |
|
|
Name |
wm/core-work-manager |
|
|
Request Class |
core-work-manager-fair-share-req-class |
|
|
Minimum Threads Constraint |
core-work-manager-min-threads-constraint |
|
|
Maximum Threads Constraint |
core-work-manager-max-threads-constraint |
|
|
Capacity Constraint |
None Configured |
|
|
Ignore Stuck Threads |
Checked |
|
|
5 |
Minimum Threads Constraint |
|
|
Name |
ws-work-manager-min-threads-constraint |
|
|
Count |
10 |
|
|
6 |
Maximum Threads Constraint |
|
|
Name |
ws-work-manager-max-threads-constraint |
|
|
Count |
100 |
|
|
7 |
Fair Share Request Class |
|
|
Name |
ws-work-manager-fair-share-req-class |
|
|
Fair Share |
60 |
|
|
8 |
Work Manager |
|
|
Name |
wm/ws-work-manager |
|
|
Request Class |
ws-work-manager-fair-share-req-class |
|
|
Minimum Threads Constraint |
ws-work-manager-min-threads-constraint |
|
|
Maximum Threads Constraint |
ws-work-manager-max-threads-constraint |
|
|
Capacity Constraint |
None Configured |
|
|
Ignore Stuck Threads |
Checked |
|
|
9 |
Minimum Threads Constraint |
|
|
Name |
ui-work-manager-min-threads-constraint |
|
|
Count |
5 |
|
|
10 |
Maximum Threads Constraint |
|
|
Name |
ui-work-manager-max-threads-constraint |
|
|
Count |
100 |
|
|
11 |
Fair Share Request Class |
|
|
Name |
ui-work-manager-fair-share-req-class |
|
|
Fair Share |
50 |
|
|
12 |
Work Manager |
|
|
Name |
wm/ui-work-manager |
|
|
Request Class |
ui-work-manager-fair-share-req-class |
|
|
Minimum Threads Constraint |
ui-work-manager-min-threads-constraint |
|
|
Maximum Threads Constraint |
ui-work-manager-max-threads-constraint |
|
|
Capacity Constraint |
None Configured |
|
|
Ignore Stuck Threads |
Checked |
After configuring work managers, managed servers need to be restarted.
The work manager configuration, like the minimum and maximum threads constraints and the fair share request factors, can be modified at any time in WebLogic Admin Console as is required, for example to increase the number of threads used for task processing.
This largely depends on hardware capacity, system configuration and the load characteristics and typically requires a thorough understanding of the system's performance.