Database Roles in a Synchronized Database Environment

In a Synchronized Database Environment, the terms primary and secondary signify the intended function or role of each copy of the database. A secondary database with the Native subrole:

• Cannot be updated by application programs

• Is modified only by the replay of audit records generated on the primary database server

• Can assume the role of the primary database if the primary database becomes unavailable

An SDE is made up of exactly one primary database server and one or more secondary database servers, usually hosted on different machines that may be in the same room or in entirely different geographic locations.

The configuration parameters required to initialize SDS modules are defined in the [SyncDbService] section of the JADE initialization file. For details, see "Synchronized Database Service Section [SyncDbService]" under "Synchronized Database Service Sections", in the JADE Initialization File Reference.