This section describes the database server and arbitration server processes of Mirroring Controller.
The database server processes comprise the Mirroring Controller process and Mirroring Controller monitoring process.
Process type | Description |
|---|---|
Mirroring Controller process | Performs operating system/server and process heartbeat monitoring and disk abnormality monitoring between database servers. Additionally, it issues arbitration requests to the arbitration server. |
Mirroring Controller monitoring process | Performs heartbeat monitoring of the Mirroring Controller process. If the Mirroring Controller process returns no response or is down, the monitoring process is restarted automatically. |
The only arbitration process is the Mirroring Controller arbitration process.
Process type | Description |
|---|---|
Mirroring Controller arbitration process | Performs rechecks for issues detected on the primary server or the standby server. Additionally, this process performs fencing if it determines that there is an issue on the primary server or the standby server. |
