You issue this SQL command to perform an online backup of the USER_DATA tablespace:ALTER TABLESPACE user_data BEGIN BACKUP;Next, you issue an operating system command to back up user_data01.dbf, the file that belongs to the USER_DATA tablespace. You then experience an instance failure. Which three statements are true?()
AA
BB
CC
DD
EE
打开注册表时需在“运行”内输入()。
A、msconfig
B、regedit
C、msdos
钢笔的正确携带位置应该是男士西装()的口袋。
某系统结构图如下图所示该系统结构图的深度是( )。
A、1
B、2
C、3
D、4
Where can you obtain information about full database backup set created using RMAN, if the control file was used as the repository?()
A、V$BACKUPSET
B、RC_DATABASE
C、V$BACKUP_SET
D、RC_BACKUP_SET
下列叙述中,不属于软件需求规格说明书的作用的是( )。
A、便于用户,开发人员进行理解和交流
B、反映出用户问题的结构,可以作为软件开发工作的基础和依据
C、作为确认测试和验收的依据
D、便于开发人员进行需求分析