We have migrated Core Banking, DWH, ODS, and several other production environments to this platform. Our goal was to successfully migrate those mission-critical Oracle Databases to the Exadata Cloud at Customer machine. It was a cross-platform migration with IBM to Oracle, Power to Intel, and AIX to Linux. We have used XTTS (Cross Platform).
We have used the cross-platform transportable tablespace method for this migration, and have accelerated it by using RMAN incremental backups to minimize the migration downtime.
We did a lot of performance testing and verified it before the migration.
We spent time readying for the migration improvements too.