International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
There are basically two methods to configure data guard, one is with the help of standby physical database and other is with the help of logical standby database. The data guard is monitoring tool which observes continuous activities of primary database with the help of observer. The data guard can be configured using observer with physical standby database or it can be configured using logical standby database. The physical standby zero failover is already achieved but objective of the authors' research is to achieve zero failover using logical standby database by configuring broker/observer within it.