单项选择题
A. Oracle Net Manager
B. Listener Control utility
C. Database Configuration Assistant
D. Oracle Net Configuration Assistant
多项选择题 WhichtwostatementsaretrueaboutencryptingRMANbackup？（）
单项选择题 Whichoptionisbestpracticeforcreatingarecoverycatalogownerinthecatalogdatabase？（）
单项选择题 The database is running in the ARCHIVELOG mode. It has three redo log groups with one member each. One of the redo log groups has become corrupted. You have issued the following command during the recovery of a damaged redo log file： ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 3； Which action should you perform immediately after using this command？（）