Zero Downtime Migration to Oracle Exadata with Oracle GoldenGate
By Irem Radzik-Oracle on Jun 07, 2011
System upgrades, migrations, consolidation and maintenance activities are fact of life in today’s IT environment, as companies strive to achieve higher performance, scalability and flexibility. Those activities typically require a “planned outage" and for systems that support global operations or require 24/7 availability even a planned outage can be disruptive to business.
Currently we see a great demand from customers for consolidating their databases to Oracle Exadata. As they embark on these projects, they also seek a solution to avoid interrupting availability of their business-critical systems, as it can significantly impact revenue, productivity, and customer satisfaction. Oracle GoldenGate’s real-time, heterogeneous data replication capabilities come very handy in these migration and consolidation projects. It synchronizes old environment, for example DB2, SQL Server or an earlier version of Oracle Database, with the new Oracle Exadata system in real time. While the new environment is prepared and tested, Oracle GoldenGate captures every new transaction from the production system and delivers to Oracle Exadata as soon as it is ready. Once the systems are in sync applications and users can be pointed to the Exadata system immediately without any downtime.
One recent customer that chose Oracle GoldenGate for migration to Exadata is e-Dialog. They are part of GSI Commerce Inc., and provide integrated digital marketing solutions to businesses worldwide. When their message volumes for multichannel marketing and campaign analytics services started to increase rapidly they decided to move to Exadata to achieve higher performance. At the same time they had to ensure business continuity during the migration as any outage would impact their customers’ access to their services. They used Oracle GoldenGate to complete the migration in phases over six months. Oracle GoldenGate’s bidirectional replication capabilities allowed e-Dialog to run the legacy system along with Exadata concurrently. I invite you to read more about e-Dialog success story to learn how Oracle GoldenGate enables successful migration to Oracle Exadata.