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Answer Posted / azhar ali khan
Whenever any change takes place in database,first the change is written to LOGBUFFER.Then from LOGBUFFER the changes are written to REDOLOG files.
LogWriter(LGWR) is a process that writes the redobuffers from LOGBUFFER to REDOLOGFILES in terms on change vectors.
When does Logwriter(LGWR) writes to Redologs,
-Whenever logbuffer is 1mb or 1/3rd full.
-Whenever user commits.
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