The same client is used for Optim Query Tuner for DB2® for Linux®, UNIX®, and Windows®, Optim Query Tuner for DB2 for z/OS®, and Optim Query Workload Tuner for DB2 for z/OS. However, the features that are available depend on the product license that is activated on the data server. You need to activate the product license on each data server that you want to tune SQL statements on. You also need to configure each data server for the Optim Query Tuner client.