For an UPDATE action query,the redo log file contains a pre-image of the updated fields,which shows the data values before the update.

Name: For an UPDATE action query,the redo log file contains a pre-image of the updated fields,which shows the data values before the update.
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The redo log file in Oracle Database contains a pre-image of the modified data block, showing the data values before the update. This information is used during database recovery and in case of a rollback or undo operation.

For an UPDATE Action Query,the Redo Log File Contains a Pre-Image