单项选择题
A.Transactions are rolled back using redo log files.
B.Transactions are rolled forward using redo log files.
C.Transactions are rolled back using redo log files and archived log files.
D.Transactions are rolled forward using redo log files and rolled back using redo log files.
单项选择题 You work as a database administrator for Certkiller .com. You determine that archiving was not successful in one of thedestinators. You want to check the alert log file for more information on this. Which initialization parameter gives you the location of the alert log file？（）
单项选择题 You work as a database administrator for Certkiller .com. 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？（）
多项选择题 You work as a database administrator for Certkiller .com. You are using Recovery Manager （RMAN） to perform backups in your databases. Which four backup operations can be performed using RMAN？（）