Inactive redologs lost

If I lost the inactive redolog file. Then i can use the below mentioned commands to clear and recreate the log files,.
alter database clear logfile group 2; ( inactive and archived)
alter database clear unarchived logfile group 2; ( inactive and not archived )
Inactive logs files are not required for crash recovery and hence there is no need for incomplete recovery as we do when we lost current re-do log files.
What is that inactive and archvied means... is that mean redo log file does not contain any redo log entries.. if so why it is archived.
Can you please someone clear.

Amazingly, Oracle actually publishes documentation, where you can look this stuff up... :-)
Archived means your database is running in archivelog mode, and this particular log has been copied to the archive log area by ARC0.
Inactive means that is no longer needed for instance recovery.
See:
http://download.oracle.com/docs/cd/E11882_01/server.112/e17110/dynviews_2031.htm#REFRN30127
-Mark

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    Edited by: vreddy on Aug 6, 2012 9:18 AM

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