OCP 11G認證考試章節(jié)練習(xí)(2019.05.01)

View the Exhibit to examine the parameters set for your database instance.You execute the following command to perform I/O calibration after the declaration of bind variables in the session that are used in the command:

Which statement describes the consequence?（）

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?（）

A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows:

What happens when the whole CONTROLLER1 Failure group is damaged?（）