Scenario: What happens after the principal BlackBerry Configuration Database stops responding

If a principal BlackBerry® Configuration Database stops responding, the response of the primary BlackBerry® Enterprise Server depends on whether it can connect to the mirror BlackBerry Configuration Database.

The following responses assume that the messaging server and BlackBerry® Infrastructure are available.

Response of a primary BlackBerry Enterprise Server that can connect to the mirror BlackBerry Configuration Database

  1. The primary BlackBerry Enterprise Server loses its connection to the principal BlackBerry Configuration Database.
  2. The primary BlackBerry Enterprise Server connects to the mirror BlackBerry Configuration Database.
  3. The primary BlackBerry Enterprise Server remains the primary instance.

Response of a primary BlackBerry Enterprise Server that cannot connect to the mirror BlackBerry Configuration Database

  1. The primary BlackBerry Enterprise Server loses its connection to the principal BlackBerry Configuration Database.
  2. The primary BlackBerry Enterprise Server tries to connect to the mirror BlackBerry Configuration Database, but is unsuccessful.
  3. The primary BlackBerry Enterprise Server lowers its health score and continues to provide limited services.
    One of the following events occurs:
    • If the standby BlackBerry Enterprise Server can open a connection to the principal or mirror BlackBerry Configuration Database, it demotes the primary BlackBerry Enterprise Server and promotes itself to become the primary instance.
    • If the standby BlackBerry Enterprise Server cannot open a connection to the principal or mirror BlackBerry Configuration Database, it cannot promote itself. You must resolve any issues before the BlackBerry Enterprise Server pair can recover.

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