ouareusingtheflashrecoveryarea（fastrecoveryareain11gRelease2）tostorebackuprelatedfilesinyourdatabase.AfterregularmonitoringofspaceusageintheMashrecoveryarea.Yourealizethattheflashrecoveryareais（jettingfilledupveryfastanditisrunningoutofspace.Yourdatabaseflashrecoveryareaislowonspecieandyouhavenomoreroomondisk.Proactively，whichtwooptionscouldyouusetomakemorespaceavailableintheflashrecovery（）
A.ChangetheRMANarchivedlogdeletionpolicy.
B.UsetheRMANCROSSCHECKcommandtoreclaimthearchivedlogspace.
C.ChangetheRMANretentionpolicytoretainbackupsforashorterperiodoftime.
D.UseOScommandtomovefilesfromtheflashrecoveryareatosomeotherlocation.
正确答案：参考B, D
