多项选择题
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.
单项选择题 How can you reverse the effects of an ALTER DISKGROUP ... DROP DISK command if it has alreadycompleted?（）
单项选择题 How can you reverse the effects of an ALTER DISKGROUP ... DROP DISK command if it has not yetcompleted?（）
单项选择题 Given the following steps, which would be the correct order to create a backup of an Oracle database in NOARCHIVELOG mode?（） 1.shutdown immediate from RMAN 2.Log into RMAN 3.startup mount from RMAN 4.backup database 5.alter database open 6.backup database plus archivelog delete input