Describe ARCn,”Archiver Processes• Copy redo log files to a designated storage device after alog switch has occurred• Can collect transaction redo data and transmit that data tostandby destinationsIf you anticipate a heavy workload for archiving (such as during bulk loading of data)
you can increase the maximum number of Archiver processes. There can also be multiple archive log destinations. It is recommended that there be at least one Archiver process for each destination. The default is to have four Archiver processes.”