评估以下语句: ALTER TABLE employees ADD CONSTRAINT employee_id PRIMARY KEY; 该语句将返回以下哪种结果()
How can you reverse the effects of an ALTER DISKGROUP ... DROP DISK command if it has not yet completed?()
Examine the following command: ALTER DISKGROUP data MOUNT FORCE; In which scenario can you use the above command to mount the disk group? ()
You issue this statement:ALTER DATABASE BACKUP CONTROLFILE TO TRACE; What does the statement generate?()
Examine the command: SQL> ALTER USER skd ACCOUNT LOCK; Which two statements are true after the command is executed()
You are shrinking the SCOTT.EMP table by executing the ALTER TABLE SCOTT.EMP SHRINK SPACE CASCADE statement. What is a prerequisite for shrinking the SCOTT.EMP table?()
Which of the following ALTER DISKGROUP commands does not use V$ASM_OPERATION to record thestatus of the operation?()
Which command is used to alter the attributes of "log type" defined in the alog configuration database?()
You issued the following command: ALTER TABLE SCOTT.EMP SHRINK SPACE; The SCOTT.EMP table is stored in the DATA1 tablespace that has the following properties: DATA1 is a read/write tablespace. DATA1 is not autoextensible to an unlimited size. DATA1 is online. Segment space management for the DATA1 tablespace is manual. You issued the ALTER TABLE SCOTT.EMP SHRINK SPACE; command that generates the following error: ORA-10635: Invalid segment or tablespace type What could be the reason for the failure of the command?()
Examine the command: ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS; What does the command accomplish?()