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Oracle database 10g:Administration I Sample Questions:

1. After being hired as a database administrator, you find that there is only one database that is functional and that is being accessed by the applications. You want to create a replica of the database, to be used for testing purposes. What is the best method to create the replica?

A) create a database by using CREATE DATABASE .. command and manually copy the data
B) use Database Configuration Assistant (DBCA) to create a template from the existing database to contain the database structure
C) use DBCA to create a template from the existing database to contain the database structure and then manually copy the data using Oracle Data Pump
D) use DBCA to create a template from the existing database to contain the database structure with data files and then use the same template to create the database in the new location

2. You want the user APP_DBA to administer the Oracle database from a remote machine. APP_DBA is granted the SYSDBA privilege to perform administrative tasks on the database. Which file is used by the Oracle database server to authenticate APP_DBA?

A) control file and password file
B) listener controller file
C) control file
D) password file

3. You want to refer the employee personal information stored in operating system(OS) files in EMPLOYEE table. You plan to add a new column to EMPLOYEE table to achieve this. Which data type would you use for the new column?

A) CLOB
B) LONG RAW
C) BLOB
D) BFILE

4. Which two statements are true regarding the SGA_TARGET initialization parameter? (Choose two.)

A) Reducing the value of the SGA_TARGET parameter takes away memory from both autotuned and manually sized components.
B) Increasing the value of the SGA_TARGET parameter distributes the increased memory among all the autotuned components.
C) It can be increased up to the value of the SGA_MAX_SIZE parameter.
D) Increasing the value of SGA_TARGET up to the value of SGA_MAX_SIZE disables the automatic shared memory management feature.

5. View the Exhibit and analyze the CREATE TABLE statements used to create the ITEMS and ORDERS tables.
The ITEMS table has 50 rows and ORDERS table has 500 rows. Because you decide to not deal with the item code 188 in future, you execute the following command to remove the item:
SQL> DELETE FROM items WHERE item_code=188;
What is the effect of this command?

A) The command fails with integrity violation error.
B) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the foreign key constraint is disabled in the ORDERS table.
C) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the dependent rows in the ORDERS table are also deleted automatically.
D) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the dependent rows in the ORDERS table are populated with
NULL values in their ITEM_CODE columns.

Solutions: