Why and when to perform this task
WebSphere Application Server Version 4.0.x had a server-wide configuration setting called Module Visibility Mode. For Version 5.0 and later, you use application or WAR class-loader policies instead of module visibility modes. The Version 5.x policies provide additional flexibility because you can configure applications running in a server for an application class-loader policy of Single or Multiple and for a WAR class-loader policy of Module or Application.
To migrate module visibility modes in your Version 4.0.x applications to their equivalents in Version 5.x, change the settings for your Version 4.0.x applications and modules to the Version 5.x values shown in the table below.
Version 4.0.x module visibility mode | Version 5.x application class-loader policy | Version 5.x WAR class-loader policy |
Server | Single | Application |
Compatibility | Single | Module |
Application | Multiple | Application |
Module* | Multiple | Module |
J2EE | Multiple | Module |
*There is no exact equivalent for the Version 4.0.x Module mode because it isolated EJB modules within an application.
Steps for this task