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Total No Of Questions: 100.
1) You have recently collected statistics on certain objects of a schema in your database. But you observe suboptimal execution plans for the queries on these objects after two days of statistics collection. The optimizer statistics retention period is set to its default value. Which action would help to use the previous set of statistics on the objects?


2) A constraint in a table is defined with the INITIALLY IMMEDIATE clause. You executed the ALTER TABLE command with the ENABLE VALIDATE option to enable the constraint that was disabled. What are the two effects of this command? (Choose two.)


3) Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undo tablespace? (Choose two.)


4) Examine the following output: SQL> SELECT index_name,status FROM dba_indexes WHERE status='UNUSABLE'; INDEX_NAME STATUS ------------------------------ ----------- EIND UNUSABLE Which two statements about the above index are true? (Choose two.)


5) You are installing Oracle Database 11g on your server. During the installation Oracle Universal Installer (OUI) prompts you to enter the path of the inventory directory and also prompts you to specify an operating system group name. Which statement is true in this case?


6) You execute the following command to audit database activities: SQL> AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL; What is the effect of this command?


7) Identify two situations in which you can use Data Recovery Advisor for recovery. (Choose two.)


8) In a system, large online transaction processing (OLTP) jobs run during the daytime that require a large database buffer cache. In the night, the system supports batch jobs that require a higher value to be set for the large pool. You must simultaneously configure the memory components to accommodate the peak requirement. What would you do to automate this configuration for the memory components with change in mode of working?


9) User SCOTT executes the following command on the EMP table but has not issued COMMIT,ROLLBACK, or any data definition language (DDL) command: SQL> SELECT ename FROM emp 2 WHERE job='CLERK' FOR UPDATE OF empno; SCOTT has opened another session to work with the database instance. Which three operations would wait when issued in SCOTT's second session? (Choose three.)


10) You execute this command to drop the ITEM table, which has the primary key referred in the ORDERS table: SQL> DROP TABLE scott.item CASCADE CONSTRAINTS PURGE; Which two statements are true about the effect of the command? (Choose two.)
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