RMAN: Using Block Change Tracking

RMAN: Using Block Change Tracking

This feature keeps track of when a database block changes. The idea is that if you’re using an incremental backup strategy, you can enhance performance, because by implementing this feature, RMAN doesn’t have to scan each block (under the high-water mark) in the data files to determine whether it needs to be backed up. Rather, RMAN only has to access the block change tracking file to find which blocks have changed since the last backup and directly access those blocks. If you work in a large, data warehouse environment and are using an incremental backup strategy, consider enabling block change tracking to enhance performance.

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