Modifying WAR class loader policies for applications using wsadmin scripting

You can use scripting and the wsadmin tool to modify WAR class loader policies for applications.

Before you begin

Start the wsadmin scripting tool.

About this task

Attention: If an application is running, changing an application setting causes the application to restart. On stand-alone servers, the application restarts after you save the change. On multiple-server products, the application restarts after you save the change and files synchronize on the node where the application is installed. To control when synchronization occurs on multiple-server products, deselect Synchronize changes with nodes on the Console preferences page.

Complete the steps in this topic to modify WAR class loader policies for an application.

Procedure

Retrieve the configuration ID of the object that you want to modify and set it to a variable.
For example, set the configuration ID to the dep variable. In this example, the object is the deployed application MyApp.
- Using Jacl:
```
set dep [$AdminConfig getid /Deployment:MyApp/]
```
- Using Jython:
```
dep = AdminConfig.getid("/Deployment:MyApp/")
```
Identify the deployed object and set it to a variable.
For example, set the deployed object to the depObject variable:
- Using Jacl:
```
set depObject [$AdminConfig showAttribute $dep deployedObject]
```
- Using Jython:
```
depObject = AdminConfig.showAttribute(dep, "deployedObject")
```

Show the current attribute values of the configuration object with the show command.

Using Jacl:

$AdminConfig show $depObject warClassLoaderPolicy

Example output:

{warClassLoaderPolicy MULTIPLE}

Using Jython:

AdminConfig.show(depObject, 'warClassLoaderPolicy')

Example output:

'[warClassLoaderPolicy MULTIPLE]'

Modify the attributes of the configuration object with the modify command.

Using Jacl:

$AdminConfig modify $depObject {{warClassLoaderPolicy SINGLE}}

Using Jython:

AdminConfig.modify(depObject, [['warClassLoaderPolicy', 'SINGLE']])

Save the configuration changes.
Use the following command example to save your configuration changes:
```
AdminConfig.save()
```

Optional: Verify the changes that you made to the attribute value with the show command.

Using Jacl:

$AdminConfig show $depObject warClassLoaderPolicy

Example output:

{warClassLoaderPolicy SINGLE}

Using Jython:

AdminConfig.show(depObject, 'warClassLoaderPolicy')

Example output:

'[warClassLoaderPolicy SINGLE]'