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Oracle database 10g:Administration I Sample Questions:

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

2. You perform differential incremental level 1 backups of your database on each working day and level 0 backup on Sundays. Which two statements are true about the differential incremental backups? (Choose two.)

A) The backup performed on Sundays contains all the blocks that have changed since the last level 1 backup.
B) The backup performed on each working day contains all the blocks that have changed since the last level 0 backup.
C) The backup performed on each working day contains all the blocks that have changed since the last level 0 or level 1 backup.
D) The backup performed on Sundays contains all the blocks that have ever been use in the database.

3. Which two statements are true regarding a PL/SQL package body? (Choose two.)

A) It can be changed and recompiled without making the package specification invalid.
B) It cannot invoke subprograms defined in other packages.
C) It cannot be created without a package specification.
D) It can contain only the subprograms defined in the package specification.

4. Redo log files are not multiplexed in your database. Redo log blocks are corrupted in group 2, and archiving has stopped. All the redo logs are filled and database activity is halted. Database writer has written everything to disk. Which command would you execute to proceed further?

A) ALTER DATABASE RECOVER LOGFILE GROUP 2;
B) RECOVER LOGFILE BLOCK GROUP 2;
C) ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 2;
D) ALTER DATABASE DROP LOGFILE GROUP 2;
E) ALTER DATABASE CLEAR LOGFILE GROUP 2;

5. Users of HR schema complain about slower-than-normal performance. On investigation the DBA found that maintenance was recently performed on some of the tables. The DBA traced the query that takes longer than normal to execute.
View the Exhibit exhibit_before.
After the DBA resolves the problem, the query performs normally.
View the Exhibit exhibit_after.
What action would the DBA have taken to resolve the performance problem?

A) reorganized the associated indexes for the EMPLOYEES table that were in an unusable state
B) analyzed the EMPLOYEES table to collect the current statistics
C) moved the EMPLOYEES table in to a locally managed tablespace
D) moved the indexes associated with the EMPLOYEES table to the same tablespace where the EMPLOYEES table exists
E) moved the EMPLOYEES table to another location in the same tablespace

Solutions: