OCP 1Z0 052 73

73.  You  are  managing  an  Oracle  Database  11g  database.  You  configured  the  database  to  run  in 
ARCHIVELOG mode. Which two statements are true in this scenario? (Choose two.) 
A.You must shut down the database instance to perform the backups. 
B.You must configure the Flash Recovery Area (FRA) for the database. 
C.You can perform complete database backups without closing the database. 
D.All the previous closed database backups including control files become invalid after you configure the 
database to ARCHIVELOG mode. 
Answer: CD 
启用归档后以前的备份失效。需要重新备份。
归档模式下可以在线全备，不需要关机。