多项选择题

A.Redo logs were restored from tape for recovery. 
B.The file names are only used when they are copied to tape. 
C.The database was opened with the RESETLOGS option and log numbers restarted. 
D.Log names run in circular fashion; arch_3.arc is re-created by the ARCn process. 
E.A file name is randomly chosen by the archive process; as long as it is unique, it does not have to be sequential.