Recovery Measures

Replication Server provides you various options for recovering data that is lost after a component failure in a replication system.

• Re-create Subscriptions
  Resolve all inconsistencies in the primary version of the data. One way to recover from a failure at a remote site is to re-create the subscriptions.
• Subscription Reconciliation Utility ( rs_subcmp )
  The rs_subcmp utility tests for rows that are missing, orphaned, or inconsistent in a replicate table and corrects the discrepancies.
• Database Recovery
  When a primary database fails, all committed transactions can be recovered if the database and the transaction log are undamaged. If the database or the transaction log is damaged, you must load a database dump and transaction dumps to bring the database to a known state, and then resubmit the transactions that were executed after the last transaction dump.
• Restoring Coordinated Dumps
  Restoring database or transaction dumps created by the coordinated dump process returns the primary and replicated data to a previous, consistent state.
• Database Resynchronization
  Database resynchronization allows you to rematerialize your replicate database and resume further replication without data loss or inconsistency, and without forcing a quiesce of your primary database.