This parameter defines a second, or "duplex", copy of the offline redo log files created by BRARCHIVE.
Syntax
archive_dupl_del = only|yes|no|check
Default value: only
Possible values:
only: deletes offline redo log files created by the Oracle parameter log_archive_duplex_dest, but does not delete those created with the Oracle parameter log_archive_dest_2
no: does not delete offline redo log files created by either the Oracle parameter log_archive_duplex_dest or the Oracle parameter log_archive_dest_2 (this is the same as setting the environment variable BR_NDD)
yes: deletes offline redo log files created by either the Oracle parameter log_archive_duplex_dest or the Oracle parameter log_archive_dest_2
check: deletes offline redo log files created by either the Oracle parameter log_archive_duplex_dest or the Oracle parameter log_archive_dest_2 only when a binary compare with the first copy of the offline redo log file has completed successfully. This protects you against data corruption.