单项选择题
A. The data file is checked for physical corruption and backed up if found clean.
B. The backup of data file 5 is performed and the interactive messages during the backup are suppressed.
C. The existing backup for the data file is checked and the backup is performed if there are changes in the data file after the last backup.
D. The backup of data file 5 is performed and all SQL statements that are executed during RMAN compilation and their results are displayed
单项选择题 What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）
多项选择题 IdentifytheactivitiesperformedaspartoftheAutomaticSQLTuningprocessinthemaintenancewindow？（）
多项选择题 You issued the following command： CREATE GLOBAL TEMPORARY TABLE admin_work_area （startdate DATE， enddate DATE， class CHAR（20）） ON COMMIT DELETE ROWS TABLESPACE tbs_t1； An index is then created on the ADMIN_WORK_AREA temporary table. Which two statements are true regarding the TBS_T1 tablespace in the above command？（）