2.1.3 Improved Performance Using Partner Cache Reads

When a storage server resumes operation following planned maintenance, unplanned failure, or replacement of a hard disk drive or flash device, the Exadata Smart Flash Cache may not contain recently accessed data. However, a secondary copy of the recently accessed normally resides in the cache of a partner storage server.

Oracle Exadata System Software release 25.2.0 introduces enhancements to the caching algorithms, enabling a storage server to perform a partner read to a remote cache rather than a more expensive disk read on the local server. This capability effectively transforms a local flash cache miss into a remote cache hit, improving read I/O performance and minimizing disk reads.

This capability also requires Oracle Database with patch 38047996.