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Oracle database 10g:Administration I Sample Questions:

1. Your database is in NOARCHIVELOG mode and a logswitch happens every 20 minutes. On Thursday morning, media failure resulted in corruption of a data file belonging to the TOOLS tablespace. Backups are taken on every Sunday. What would you do in this situation?

A) restore the data files from backup and perform a complete recovery
B) restore the entire database from the most recent backup and start the instance and open the database
C) restore only the corrupted data file and perform tablespace recovery
D) recover using Oracle Flashback Database technology
E) restore the data files from backup and perform cancel-based recovery

2. 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) BLOB
B) BFILE
C) CLOB
D) LONG RAW

3. Which two statements about Flashback Query are true? (Choose two.)

A) It is generated by using the redo log files.
B) The database has to be opened with the resetlogs option after performing Flashback Query.
C) It helps in row-level recovery from user errors.
D) It can be performed to recover ALTER TABLE statements
E) It fails when undo data pertaining to the transaction is overwritten.

4. In the middle of a transaction, a user session was abnormally terminated but the instance is still up and the database is open. Which two statements are true in this scenario? (Choose two.)

A) SMON rolls back the transaction and releases the locks.
B) The transaction is rolled back by the next session that refers to any of the blocks updated by the failed transaction.
C) Event Viewer gives more details on the failure.
D) Data modified by the transaction up to the last commit before the abnormal termination is retained in the database.
E) The alert log file gives detailed information about the failure.
F) PMON rolls back the transaction and releases the locks.

5. User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK, or any data definition language (DDL) command:
SQL> SELECT job FROM emp
2 WHERE job='CLERK' FOR UPDATE OF empno;
SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT's second session? (Choose three.)

A) LOCK TABLE emp IN SHARE MODE;
B) DELETE FROM emp WHERE job='MANAGER';
C) INSERT INTO emp(empno,ename) VALUES (1289,'Dick');
D) SELECT job FROM emp WHERE job='CLERK' FOR UPDATE OF empno;
E) LOCK TABLE emp IN EXCLUSIVE MODE;

Solutions: