Oracle Catlog & Archive Log

Explain what are Oracle Catlog & Oracle Archive Log ?

Questions by sakshigopal

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oracle catalog used for recovery purpose in RMAN our target database registered in catalog and storing metadata for the target database.

Archivelog is also used for recovery purpose but its store redolog data befor redolog full and going to overwrite.
Archiver background process writes data from redolog to archivelog .

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  • Sep 20th, 2011

when the log writer writes into the redo logs i.e online redo logs in circular motion.when one redo log is full it switches to another redo log , at this point of transfer it is called log switch.

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