WebSphere Application Server - Express may not run properly if you have port conflicts. For example, your server may not start. The port validator verifies your configuration to ensure that you do not have port conflicts across WebSphere Application Server instances and products. It detects port conflicts between instances and servers in different Version 4 and Version 5 products (Version 4 Advanced Edition, Version 4 Advanced Edition Single Server, Version 5 Base, Version 5 Network Deployment, and Version 5 Express).
To run the port validator, run the servicetools script from the Qshell command line and specify the
cd /QIBM/ProdData/WebASE/ASE5/bin
servicetools -portconflict -products all
For more information, see The port validator tool.