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1. The UNDO_RETENTION parameter in your database is set to 1000 and undo retention is not guaranteed. Which statement regarding retention of undo data is correct?

A) Undo data gets refreshed after every 1,000 seconds.
B) Committed undo data would be retained for 1,000 seconds if free undo space is available.
C) Undo data will be stored permanently after 1,000 seconds.
D) Undo data becomes obsolete after 1,000 seconds.
E) Undo data will be retained in the UNDO tablespace for 1,000 seconds, then it gets moved to the TEMPORARY tablespace to provide read consistency.

2. User A executes the following command to update the TRANS table:
SQL> UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code='C005';
Before user A issues a COMMIT or ROLLBACK command, user B executes the following
command on the TRANS table:
SQl> ALTER TABLE trans MODIFY (tr_type VARCHAR2(3));
What would happen in this scenario?

A) The ALTER TABLE command fails due to the resource being busy.
B) The ALTER TABLE command modifies the column successfully.
C) The ALTER TABLE command waits until user A ends the transaction.
D) The transaction for user A is rolled back.

3. You want to create a new optimized database for your transactional production environment to be used by a financial application. While creating the database, you want the Oracle software to take care of all basic settings to optimize the database performance. Which method would you use to achieve this objective?

A) Use the CREATE DATABASE .. command to create the database with Automatic Storage Management (ASM) file system.
B) Use Database Configuration Assistant (DBCA) to create the database with Transaction Processing template.
C) Use the Database Configuration Assistant (DBCA) to create the database with Oracle-managed files.
D) Use the CREATE DATABASE .. command to create the database with Oracle-managed files.
E) Use Enterprise Manager to create a new database with the Online Transaction Processing (OLTP) option.

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

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

5. While running the Oracle Universal Installer on a Unix platform to install Oracle Database 10g software, you are prompted to run orainstRoot.sh script. What does this script accomplish?

A) It modifies the Unix kernel parameters to match Oracle's requirement.
B) It creates the base directory.
C) It creates the pointer file.
D) It creates the Inventory pointer file.
E) It creates the Oracle user for installation.

問題與答案：