多项选择题
A. A DBA can check specific tables with the DMU
B. The database to be migrated must be opened read-only.
C. The release of the database to be converted can be any release since 9.2.0.8.
D. The DMU can report columns that are too long in the converted characterset.
E. The DMU can report columns that are not represented in the converted characterset.
多项选择题 You create a table with the PERIOD FOR clause to enable the use of the Temporal Validity feature of Oracle Database 12c. Examine the table definition: Which three statements are true concerning the use of the Valid Time Temporal feature for the EMPLOYEES table?（）
多项选择题 Which three activities are supported by the Data Recovery Advisor?（）
单项选择题 What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?（）