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What do you mean by Rolling Forward in Oracle?

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What do you mean by Rolling Forward in Oracle?
posted Apr 21, 2015 by Vidhya Sagar

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Rolling forward: During this operation, the Oracle server will update all datafiles with the information from the redo log files. The online redo log files are always written to before the data is recorded in the datafiles. Thus, an instance recovery may usually leave the online log files “ahead” of the datafiles.

answer Apr 21, 2015 by Shivaranjini
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