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Oracle database 10g:Administration I Sample Questions:

1. The employee IDs of employees who have made sales in the company are transferred from the EMPLOYEES table to the BONUS table with a default bonus value. Later, the human resources department decides to give bonuses to employees as per the following conditions:
1.Employees with a salary of $8,000 or less should receive a bonus.
2.Employees who have not made sales get a bonus of 1% of their salary.
3.Employees who already made sales get an increase in their bonus equal to 1% of their salary.
What would you do to implement these changes in one step?

A) Use a multitable insert operation.
B) Use a correlated UPDATE statement.
C) Use the MERGE statement.
D) Use SQL*Loader utility.

2. View the Exhibit to examine the output of the DBA_OUTSTANDING_ALERT view. After 30 minutes, you executed the following command:
SQL> SELECT reason,metric_value FROM dba_outstanding_alerts; REASON METRIC_VALUE
Tablespace [TEST] is [28 perce 28.125 nt] full
What could be the two reasons for the elimination of the other rows in the output? (Choose two.)

A) The non-threshold-based alerts are transferred to DBA_ALERT_HISTORY.
B) The threshold alert conditions are cleared.
C) The threshold alerts are transferred to DBA_ALERT_HISTORY.
D) The threshold alerts related to database metrics are permanently stored in DBA_ALERT_HISTORY but not the threshold alerts related to instance metrics.

3. Your database is started by using the server parameter file (SPFILE). You issued this command to change the value of the LOG_BUFFER initialization parameter:
ALTER SYSTEM SET LOG_BUFFER=24M SCOPE=BOTH;
What would be the outcome of this command?

A) The command would succeed only if initialization parameter LOG_ARCHIVE_MAX_PROCESS is set to value 2.
B) The command would return an error because LOG_BUFFER is a static parameter.
C) The parameter value would be changed and it would come into effect immediately.
D) You need to restart the database so that parameter changes can come into effect.

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

5. View the Exhibit.
Which statement causes more undo generation?

A) DELETE FROM emp WHERE empno=7934;
B) INSERT INTO emp VALUES(7999,'JHON','CLERK',7782,'10-MAY-83',1500,NULL,10);
C) UPDATE emp SET comm=400 WHERE empno=7844;
D) SELECT * FROM emp;

Solutions: