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This parameter activates the RMAN CROSSCHECK command, which checks the availability of offline redo log files and RMAN backup files.

For example, if certain offline redo log files are no longer available in the archive directory ( oraarch by default), they can be marked as deleted in the Oracle control file (view V$ARCHIVED_LOG). This is important for the RMAN recovery logic and for Oracle Data Guard.

It is now possible to set this status with the RMAN CROSSCHECK command during BRARCHIVE runs with the function -sd|-save_delete, -scd|-second_copy_delete, -ssd|-double_save_delete, -ds|-delete_saved, -dc|-delete_copied, or -cds|-copy_delete_save.

rman_cross_check = none | archive | arch_force

none: no changes to the status of the offline redo log files

archive - RMAN CROSSCHECK is executed for RMAN backups

arch_force - RMAN CROSSCHECK is executed for all backups

Default: none

See also:

RMAN Backup with an External Backup Library

Oracle documentation