This figure illustrates a typical RAC architecture and how the Scheduler works with it. It shows the following elements:
- A database, which contains a Job Table.
- A Job Table, which contains Job1, Job2, Job3, Job4, Job5, and Job6.
- Instance 1, Instance 2, and Instance 3.
- Job Coordinator 1, which controls three job slaves.
- Job Coordinator 2, which controls three job slaves.
- Job Coordinator 3, which controls three job slaves.
- Nine job slaves.
Also, the following relationships apply:
- Job Coordinators 1, 2, and 3, which each control three slaves.
- Instance 1, which works with Job Coordinator 1.
- Instance 2, which works with Job Coordinator 2.
- Instance 3, which works with Job Coordinator 3.
- The three Job Coordinators, which exchange information among themselves.