Migration prerequisites

Before you migrate your old version of WebSphere Application Server, verify that you meet these requirements:

• Minimum version of WebSphere Application Server Version 3.5.x
  If you are migrating from Version 3.5.x, you must be at Version 3.5.6 or higher.

  To determine the current level of WebSphere Application Server installed on your system, perform these steps:

  1. Enter this command on the CL command line:

     WRKLNK '/QIBM/ProdData/WebASAdv/properties/com/ibm/websphere/product.xml'

  2. Specify option 5 (Display) next to the product.xml file to view the contents. The number within the <version> tags show the current version you have installed.

  If you do not meet the minimum version, obtain the latest group PTF. See WebSphere Application Server PTFs for iSeries for information on the correct group PTF for your i5/OS release level and WebSphere Application Server - Express Version 5.0.x product.

• Minimum version of WebSphere Application Server - Express Version 5.0.x
  If you are migrating from WebSphere Application Server - Express, you must be at Version 5.0 or higher.

• WebSphere Application Server - Express must be installed.
  Follow the instructions Installation topic for more information. WebSphere Application Server - Express must be installed on the same iSeries server as the product to be migrated.

• *ALLOBJ authority is required.
  When you call the WasPreUpgrade and WasPostUpgrade migration tools, your user profile must have *ALLOBJ authority.