Replicating Data

Data is replicated in a relational database using one of the following actions.

• You must initiate an initial extract and load to populate an empty relational database from a stable snapshot of the JADE production database. This is normally done when the RPS data store is created for use on the RPS node. This replicates the mapped extent for an RPS mapping to a selected target database.

• The incremental update process using the Datapump application keeps the target relational database synchronized with the production JADE database.

  As application transactions modify or create objects in the native production database, the operations required to perform these changes are written to the database journal. An automated tracking process uses the information stored in the database journal to keep the relational database synchronized with the mapped extent from the production JADE database.

  The tracking process ensures transactional consistency of the mapped extent and that all updates for committed transactions not explicitly excluded by the mapping or filtering are faithfully replicated in the target database.

• When reorganization and schema instantiation require new data to be loaded into the relational database, tables may need to be dropped and reloaded.