To optimize I/O efficiency, small sequential writes to Oracle Advanced Cluster File System (Oracle ACFS) are automatically combined into 1 MB chunks. However, before Oracle Exadata System Software release 21.2.0, these larger writes would bypass the cache and go directly to disk.

Commencing with Oracle Exadata System Software release 21.2.0, all Oracle ACFS I/O is eligible for caching in Exadata Smart Flash Cache.

This feature enhances Oracle ACFS performance, especially for applications such as Oracle GoldenGate trail files, having an I/O profile dominated by small sequential writes and fast subsequent reads.

Minimum requirements:

• Oracle Exadata System Software release 21.2.0