The SQL Tuning Advisor has been configured with default configurations in your database instance. Which recommendation is automatically implemented without the DBA’s intervention after the SQL Tuning Advisor is run as part of the AUTOTASK framework？（） statistics recommendations。 SQL profile recommendations。 index-related recommendations。 restructuring of SQL recommendatio。
资产评估的现实性表现在（）。 资产评估是在当前条件下进行的。 资产评估以现实存在的资产作为估价的依据。 资产评估强调客观存在。 资产评估以现实状况为基础反映未来。 资产评估是客观的。
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。
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？（） DBMS_REPAIR。 DBMS_SCHDULER。 DBMS_STATS。 DBMS_RESOURCE_MANAGER。
锅炉的通风方式有（）、（）、（）、（）。离心式风机主要由（）、（）、（）、（）和（）等构件组成。
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?（）
