Learn how one of the largest payment processing companies migrated their mission critical databases to the latest Exadata with zero downtime. While migrating to the latest Exadata platform, we upgraded databases from Oracle 12c (12.1) to Oracle Database 19c. Technical architecture details will be discussed, how ultra high availability was accomplished, lessons learned will be shared, and most importantly, how we mitigated risk for performance.
Many challenges and hurdles had to be overcome since the databases served a global financial client base. Production database migration to the Exadata environment had to be performed with zero downtime architecture with a “live-cutover” while continuing to process application data. Exadata clusters consisted of two sets of ten node RAC compute nodes across two data centers.
Technologies leveraged includes:
o Real Application Testing
o 10 Node RAC Cluster
o Global Data Services
o 10 Node RAC Cluster Exadata replicating data to another 10 Node RAC Cluster Exadata