提供免費試用 1Z0-042 題庫資料

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最新的 10g DBA 1Z0-042 免費考試真題:

1. You are using flat files as the data source for one of your data warehousing applications. You plan to move the data from the flat file structures to an Oracle database to optimize the application performance. In your database you have clustered tables. While migrating the data, you want to have minimal impact on the database performance and optimize the data load operation. Which method would you use to load data into Oracle database?

A) use the Oracle Data Pump export and import utility
B) use the external table population
C) use the conventional path data load of SQL*Loader utility
D) use the direct path data load of Oracle export and import utility

2. View the Exhibit to see the structure of the EMPLOYEES and DEPARTMENTS tables.
Your organization plans to dissolve the department with department ID 30. You execute the following command to delete rows from the DEPARTMENTS table: SQL>delete from DEPARTMENTS
where DEPT_ID = 30; The command fails and displays the following error: ERROR at line 1:
ORA-02292: integrity constraint (HR.SYS_C005374) violated - child record found Which two actions would you take to overcome this error? (Choose two.)

A) first, drop the EMPLOYEES table and then delete the rows from the DEPARTMENTS table
B) alter the foreign key constraint to include the cascade option
C) first, drop the DEPARTMENTS table and then delete the rows from the EMPLOYEES table
D) alter the foreign key constraint to include the on delete cascade option
E) first, delete all of the rows from EMPLOYEES table and then delete the rows from the DEPARTMENTS table for department id 30
F) first, delete rows from the EMPLOYEES table for department id 30 and then delete the rows from the DEPARTMENTS table for department id 30

3. In your database, the snapshot interval is set to 10 minutes for the Automatic Workload Repository (AWR). The database instance is running for the past 30 days.
View the Exhibit to examine the Automatic Database Diagnostic Monitor (ADDM) task.
The ADDM task is performed every 10 minutes, except the last task. What could be the reason for this?

A) The optimizer statistics for few objects in the database were locked before the last task.
B) The STATISTICS_LEVEL initialization parameter was changed to BASIC and reset to TYPICAL before the last task.
C) The optimizer statistics was collected manually by using the DBMS_STATS package before the last task.
D) The snapshot retention period for the AWR was increased before the last task.

4. You want to monitor and control the resource usage by sessions. You want to be warned automatically when more than 100 sessions are opened with your database. What action would you take to achieve this?

A) Use the Database Resource Manager.
B) Set the warning threshold for the Current Logons Count metric.
C) Set the limits in the profiles used by users.
D) Modify the SESSIONS initialization parameter.

5. Your database is open, and you plan to perform Recovery Manager (RMAN) backups. Which three statements are true about these backups? (Choose three.)

A) The backups would be possible only if the database is running in ARCHIVELOG mode.
B) The backups would be possible only if the database is running in NOARCHIVELOG mode.
C) The backups need to be restored and database has to be recovered in case of a media failure.
D) The backups would be consistent.
E) The backups need not be restored during recovery in case of a media failure.
F) The backups would be inconsistent.

問題與答案：

問題 #1 答案： C

問題 #2 答案： D,F

問題 #3 答案： B

問題 #4 答案： B

問題 #5 答案： A,C,F