Introduction: This is a real data guard implementation case for one of my clients. Data Guard is implemented between two clusters that reside on two different supercluster machines. The below procedure applies between any two clusters, it doesn't matter if it is a supercluster or Exadata or normal servers. I tried to put as much … Continue reading Oracle Database Guard 12c Implementation with RAC (Step-by-Step)
Introduction: We may classify the database services into two types of services : 1- Database Services 2- Cluster Managed Database Services Please note that: - The procedure dbms_service.start_service - used with the first type - is deprecated in databases managed by Oracle Clusterware and Oracle Restart with Release 11.2. While the procedure remains available in … Continue reading Oracle Database Services in (Oracle RAC + Oracle Data Guard) Environment
Objective The objective of this post is to show the detailed steps for: Testing Read-Only access to the Standby DatabaseTesting Active Data Guard Access to the Standby DatabaseTesting Switching over/back to/from Standby DatabaseTesting Failover to the Standby Current Data Guard Environment Testing Read-Only access to the Standby Database On the current primary database create a … Continue reading Oracle Data Guard 12c Testing Scenarios
What is Redo Information: Each Oracle Database instance has redo logs, which consists of two or more preallocated files that store all changes made to the database as they occur. Every instance of an Oracle Database has an associated redo log to protect the database in case of an instance failure. What is Nologging: NOLOGGING can be used to prevent bulk operations from … Continue reading How do Nologging Operations affect Recovery and Data Guard?