Assume that the target database is called ORCL and that the recovery catalog database is called RCAT.
Also assume that the recovery-catalog owner is called RCAT_OWN.
Assume the environment is configured for the ORCL database. (Choose all that apply.)
A. rman target=/ catalog=/@rcat
B. rman target=/ catalog=rcat_own/rcat_own
C. rman target=/ catalog=rcat_own/rcat_own@RCAT
D. rman target=sys/robert@orcl catalog=rcat_own/rcat_own@RCAT
E. You cannot connect to the target database and the recovery catalog at the same time.
答案：（C、D）
解析：
C，通过OS验证，不用跟密码来连接目标数据库以及目录数据库
D，通过远程密码验证来连接连接目标数据库以及目录数据库
以目录所有者的身份连接到恢复目录数据库:CONNECT CATALOG username/password@net_service_name）