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Oracle database 10g:Administration I Sample Questions:

1. The SAVE_AMT column in the ACCOUNTS table contains the balance details of customers in a bank. As part of the year-end tax and interest calculation process, all the rows in the table need to be accessed. The bank authorities want to track access to the rows containing balance amounts exceeding $200,000, and then send an alert message to the administrator. Which method would you suggest to the bank for achieving this task?

A) performing standard database auditing to audit SQL statements with granularity level set to ACCESS
B) performing standard database auditing to audit object privileges by setting the AUDIT_TRAIL parameter to EXTENDED
C) implementing fine-grained auditing with audit condition and event handler
D) implementing value-based auditing by using triggers

2. The ST_INFO master table has millions of rows that are updated very rarely. It has a STATE_CODE column that contains the value for 25 states. The table is frequently queried on the STATE_CODE column. Which type of index would you suggest to improve the query performance?

A) bitmap
B) reverse key
C) B-tree
D) function based

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

4. 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) 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
B) create a database by using CREATE DATABASE .. command and manually copy the data
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 Database Configuration Assistant (DBCA) to create a template from the existing database to contain the database structure

5. You executed the following command to export the EMPLOYEES table from a remote machine:
$ EXPDP hr/[email protected]
DUMPFILE=my_dir:exp_hr.log
LOGFILE=data_pump_dir:log_hr.log
TABLES=employees
What would be the outcome of this command?

A) The command fails with an error because DATA_PUMP_DIR directory have higher precedence over the per-file directory.
B) The command fails with an error because no absolute path is specified for log file and dumpfile.
C) The command would execute successfully and the export dump file would be created in the destination of the directory object MY_DIR.
D) The command would execute successfully. But log file would not be created as DATA_PUMP_DIR directory is only accessible to user with SYSDBA privilege.

Solutions: