单项选择题 Your are the DBA supporting an Oracle 11g Release 2 database and wish to move a table containing several DATE, CHAR, VARCHAR2, and NUMBER data types, and the table’s indexes, to another tablespace. The table does not have a primary key and is used by an OLTP application. Which technique will move the table and indexes while maintaining the highest level of availability to the application?（）

多项选择题 You must track all transactions that modify certain tables in the sales schema for at least three years. Automatic undo management is enabled for the database with a retention of one day. Which two must you do to track the transactions?（）

单项选择题 After implementing full Oracle Data Redaction, you change the default value for the NUMBER data type as follows: After changing the value, you notice that FULL redaction continues to redact numeric data with zero. What must you do to activate the new default value for numeric full redaction?（）