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4K Sectors and Metadata Enhancements for Oracle ACFS

Database Overall → ACFS

Oracle ACFS supports I/O requests in multiples of 4096-byte logical sector sizes as well as providing continued support for 512-byte logical sector size I/O requests. Oracle ACFS also adds support for creating Oracle ACFS file systems with 4096-byte (4KB) sized metadata structures. A new Oracle ACFS make file system switch enables you to format an Oracle ACFS file system with 4096-byte metadata structures composed of multiple 512-byte logical sectors on Oracle Automatic Storage Management Dynamic Volume Manager (Oracle ADVM) volumes. Oracle ACFS metadata I/O is also in 4K multiples.

Business Benefit: This feature provides better alignment of Oracle ACFS metadata when an Oracle Automatic Storage Management disk group is composed of all new advanced format drives emulating 512-byte sectors.

Release Availability
11.2
12.1
12.2
18c
19c
21c
23ai
Available On
All Offerings
Initial Release
12.2.0.1