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Dec 16, 2015 · Databases

Understanding Oracle ASM Metadata: Files, AU, Disk Headers, and Recovery

This article explains Oracle ASM metadata concepts, including ASM file types, allocation units, physical and virtual metadata structures, disk header composition, and practical methods for querying, validating, backing up, and restoring ASM metadata using tools like KFOD, KFED, and X$KFFXP.