Have requirement to migrate 100+ applications (400+ Oracle databases) to Exadata X2-2. Project timeline is 12 months to move everything to Exadata environment.
Current state of databases:
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1. All databases are in 11.2.0.2/3
2. Runs mostly standalone( very less RAC)
3. Mostly OLTP applications
4. No consolidations
5. Production systems are having RMAN - level 0 and incremental and archivelog
6. databases run on Linux , SunOS
Questions:
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1. What is the efficient migration technology to migrate all these applications/databases to exadata environments [[within 12 months timeline]]?
2. Whether databases should be migrated to 11g or 12c ? which one should be best to consider and why?
Thanks,