You created the ORDERS table in your database by using the following code： SQL> CREATE TABLE ORDERS （ORDER_DATE TIMESTAMP（0） WITH TIME ZONE）； Then， you inserted data in the ORDERS table and saved it by issuing the following statements：SQL> INSERT INTO ORDERS VALUES（’18-AUG-00 10：26：44 PM America/New_York’）； SQL> INSERT INTO ORDERS VALUES（’23-AUG-02 12：46：34 PM America/New_York’）； SQL> COMMIT； Next， you issued the following statement to change the time zone for the database： SQL> ALTER DATABASE SET TIME_ZONE=’Europe/London’； What will be the result of executing the above statement？（） The statement will fail.。 The statement will be executed successfully， and the new time zone will be set for the database.。 The statement will be executed successfully， but the new time zone will be set for the current session.。 The statement will be executed successfully， but the new time zone will neither be set for the database nor for a specific session.。
吉分商品的需求量与价格（） 成反比例关系。 成正比例关系。 没有关系。 有一定关系。
Which two statements are true regarding B-tree index（） The leaf blocks in the index are doubly linked.。 The leaf node stores a bitmap for each key value.。 The rows with NULL value in key columns also have entries in the index.。 The deletion of a row from the table causes a logical deletion in index leaf block and the space becomes available for the new leaf entry.。
立体划线一般要选择（）划线基准。 二个。 三个。 四个。 六个。
Which two statements are true regarding a PL/SQL package body？（） It cannot be created without a package specification.。 It cannot invoke subprograms defined in other packages.。 It can contain only the subprograms defined in the package specification.。 It can be changed and recompiled without making the package specification invalid.。
While querying the EMPLOYEES table， you receive an ORA-01578 message indicating block corruption in File# 1201 and Block# 1968. You analyze the table and the corruption is verified.
Which RMAN command do you use to perform BMR and repair the corrupt block？（）
