单项选择题
A. /u01/app/oracle/product/11.1.0/db_1
B. /u01/app/oracle
C. $ORACLE_HOME/bdump
D. $ORACLE_HOME/log
多项选择题 IdentifytwosituationsinwhichyoucanuseDataRecoveryAdvisorforrecovery.（）
多项选择题 Examine the following command that is used to duplicate a database on the same host： RMAN> RUN { ALLOCATE AUXILIARY CHANNEL， aux 1 DEVICE TYPE DISK； DUPLICATE TARGET DATABASE TO auxdb SKIP READONLY； \ } Which two statements describe the effect after the database is duplicated successfully？（）
多项选择题 You plan to execute the following command to perform a Flashback Database operation in your database： SQL> FLASHBACK DATABASE TO TIMESTAMP （SYSDATE -5/24）； Which two statements are true about this？（）