CA IAS provides the communication between the CA mainframe scheduling manager and the agent.
The scheduling manager determines when a job is eligible to be executed. In general, CA IAS (agent) jobs are treated like normal z/OS jobs with predecessors, early start times, and so on. For more information, see the documentation for your scheduling manager.
When the scheduling manager determines that the job can be executed, it sends a request to CA IAS. CA IAS formats the request into a message format that the agent understands and then transmits the message to the agent to process. If the agent is not immediately available, either because the system is down or unavailable due to network issues, CA IAS then stores the message. The message is sent automatically to the agent when the agent becomes available.
Users can also issue commands to CA IAS through the scheduling manager. After the user issues the command, CA IAS sends the command to the agent to process. After the agent processes the command, it sends the results back to CA IAS. CA IAS then sends the results of the command to the scheduling manager, which displays the results for the user.
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