Composition unit settings

Use this page to view composition unit settings and to change the deployment target of a composition unit.

To view this administrative console page, click Applications > Application Types > Business-level applications > application_name > composition_unit_name .

Name

Specifies a logical name for the composition unit. You cannot change the name on this page.

Description

Specifies a description for the composition unit. You cannot change the description on this page.

Backing identifier

Specifies a unique identifier for a composition unit that is registered in the application management domain.

The identifier has the following format: WebSphere:unit_typename=unit_name. For example, for the MyApp.jar asset, the backing identifier might be WebSphere:assetname=MyApp.jar.

You cannot change the identifier on this page.

Data type String
Units Configuration unit identifier

Starting weight

Specifies the order in which composition units are started when the server starts. The starting weight is like the startup order. The composition unit with the lowest starting weight is started first.

The value that you set for Starting weight determines the importance or weight of a composition unit within the business level application. For example, for the most important composition unit within a business-level application, specify 1 for Starting weight. For the next most important composition unit within the business-level application, specify 2 for Starting weight, and so on.

Avoid trouble: [sep2010] Assign composition units upon which other composition units depend a lower starting weight than the dependent composition units. If a composition unit is not started and running before its dependent composition units, java.lang.ClassNotFoundException errors might result when you attempt to start the application or its modules. [sep2010]
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Data type Integer
Default 1
Range 0 to 2147483647

Start on distribution

Specifies whether to start the composition unit when the product distributes the composition unit to other locations.

The default is not to start the composition unit.

This setting applies to asset or shared library composition units. This setting does not apply when the composition unit is a business-level application.

Data type Boolean
Default false

Recycle behavior on update

Specifies whether the product restarts the composition unit after the composition unit is updated.

The default is to restart the composition unit after partial updating of the composition unit.

This setting applies to asset or shared library composition units. This setting does not apply when the composition unit is a business-level application.

Table 1. Option descriptions. Specifies whether to restart an asset or shared library composition unit.
Option Description
ALL Restarts the composition unit after the entire composition unit is updated
DEFAULT Restarts the composition unit after the part of the composition unit is updated
NONE Does not restart the composition unit after the composition unit is updated

Current target

Specifies the existing deployment target for the composition unit.

To change the deployment target, click Modify target and select a different deployment target from the list of available clusters and servers.

Avoid trouble: [sep2010] When you change the deployment target of composition units in a business-level application, the startup order changes to the same order in which you remap composition unit targets, even if the starting weight for all composition units is set to 1. To avoid java.lang.ClassNotFoundException errors when attempting to start the remapped composition units, remap targets for composition units in the same order as that used to add the composition units or, after remapping, check starting weights to ensure that composition units upon which other composition units depend are started first. [sep2010]
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Related concepts
Business-level applications
Related tasks
Creating business-level applications
Related reference
Business-level application collection
Map target settings


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Last updated: Oct 21, 2010 10:04:34 PM CDT
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