This section explains how to address errors that may occur on the server on which operation is continuing during degrading operation triggered by a switch or disconnection.

If it is necessary to recover the database using backup data due to data becoming corrupted from disk failure or user operation error, refer to the following for information on recovery to database multiplexing mode:

• Action Required when All Database Servers or Instances Stopped

• Recovering from an Incorrect User Operation

If a temporary error occurs, such as due to a high load on the server or insufficient system resources, remove the cause of the error and restart Mirroring Controller, and then refer to the following for details on recovery to database multiplexing mode:

• Operations when the Server has Started Degrading after a Switch has Occurred

• Operations when the Server has Started Degrading after a Disconnection has Occurred