Shared DASD

When two Tivoli Workload Scheduler for z/OS systems are connected through shared DASD, they share two data sets for communication:

• Event data set
• Submit/release data set

The tracker writes the event information it collects to the event data set. An event reader, started in the controller, reads the data set and adds the events to the data router queue.

A submit/release data set is one method that the controller uses to pass work to a controlled system. When two Tivoli Workload Scheduler for z/OS systems share a submit/release data set, the data set can contain these records:

• Release commands
• Job JCL
• Started-task JCL procedures
• Data set cleanup requests
• WTO message text

Both the host and the controlled system must have access to the submit/release data set. The EQQSUDS DD name identifies the submit/release data set in the tracker address space. At the controller, the DD name is user-defined, but it must be the same name as that specified in the DASD keyword of the ROUTOPTS statement. The controller can write to any number of submit/release data sets.