多项选择题
A. The block change tracking data will be used only from the next incremental 0 backup.
B. The incremental backup will use change tracking data for accomplishing the backup.
C. The incremental backup will not use change tracking data for accomplishing the backup.
D. The block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.
单项选择题 To accomplish user-managed backup for the USERS tablespace, you issued the following command to put the database in backup mode: SQL> ALTER TABLESPACE users BEGIN BACKUP; While copying the file to the backup destination a power outage caused the instance to terminate abnormally. Which statement is true about the next database startup and the USERS tablespace?（）
多项选择题 Using the LIST command in Recovery Manager (RMAN), which two pieces of information from the RMAN repository can be listed?（）
单项选择题 Examine the following commands and their output: SQL> SELECT ename, sal FROM emp WHERE ename=JAMES; ENAME SAL JAMES 1050 QL> UPDATE emp SET sal=sal+sal*1.2 WHERE ename=JAMES; 1 row updated. SQL> SELECT ename, sal FROM emp WHERE ename=JAMES; ENAME SAL JAMES 2310 View the exhibit and examine the Flashback Version Query that was executed after the preceding commands. What could be the possible cause for the query not displaying any row?（）