Indentify two advantages of using recovery catalog instead of the control file of the database in RecoveryManager (RMAN).（）(Choose two.) You can use RMAN stored scripts。 Recovery is faster if data is stored in catalog in addition to the control file。 You can store backup information of all registered databases in one place。 Database backups are automatically deleted when they are older than the specified time period。
（）为财务费用。 保险费。 利息净支出。 差旅费。 工资。
You want to make sure that your database backup does not exceed 10 hours in length. What command would you issue that would meet this condition?（） backup database plus archivelog。 backup database plus archivlog until time ‘10:00‘。 backup database plus archivelog timeout ‘10:00‘。 backup database plus archivelog duration 10:00。
亚历山大二世的改革和彼得一世的改革的最大区别在于（）。 鼓励兴办手工工场。 建立强大的海军。 增强了俄国的国力。 使俄国的社会性质发生了变化。
Which two commands never trigger an implicit rebalancing within the disk group?（） (Choose two.) ALTER DISKGROUP misc MOUNT;。 ALTER DISKGROUP misc DROP DISK misc2;。 ALTER DISKGROUP misc CHECK ALL NOREPAIR;。 ALTER DISKGROUP misc RESIZE ALL SIZE 1023m;。 ALTER DISKGROUP dgroupA ADD DISK '/devices/A*'。
You want to rebuild a free list in the free lists of the EMPLOYEE table in the Scott schema. Which package will you use to accomplish this？（）
