This topic presents best practices when migrating Web services applications.
Migrating a 32-bit WebSphere Application Server environment to be compatible with 64-bit
If you are using Web services that are implemented on a WebSphere Application Server 32-bit environment, you need to make sure the Web services are compatible with a 64-bit environment. For a pure Java application this is not an issue. However, if your application code utilizes the Java Native Interface (JNI) code, you should be aware of the following: the JNI allows Java code running in a virtual machine to operate with applications and libraries written in other languages, such as C, C++, and assembly. So, if your J2EE application uses JNI in a 32-bit environment, your code must be re-compiled in the 64-bit environment. It is possible that the JNI calls could be different after the compilation, as the JNI specifications can change from version to version.
Migrating a Version 5 JAX-RPC client that uses SOAP over JMS to invoke a Web service
A Java API for XML-based remote procedure call (JAX-RPC) client running on WebSphere Application Server Version 5, can use SOAP over Java Messaging Service to invoke a Web service that is running on a Version 5 application server.
SibMessage W [:] CWSIT0009W: A client request failed in the application server with endpoint <endpoint name> in bus <bus_name> with reason: CWSIT0016E: The user ID null failed authentication in bus <bus_name>.When the application server is migrated to Version 6, and the default messaging provider (service integration technologies) is used, and global security is enabled for the server or the cell, the service integration bus queue destination inherits the security characteristics of the server or the cell by default. If the server or the cell has basic authentication enabled, the client request fails.
Migrating Apache SOAP Web services
See Migrating Apache SOAP Web services to Web Services for J2EE standards to learn how to migrate Apache SOAP Web services. This topic explains how to migrate Web services that were developed using Apache SOAP to Web services that are developed based on the Web Services for Java 2 Platform, Enterprise Edition (J2EE) specification.
Migrating Web services assembled with early versions of the Application Server Toolkit or Assembly Toolkit