多项选择题
A. The RMAN parallelizes the backup although the parallelism is not set for a channel.
B. The backup piece size will be limited to 300 MB.
C. The operation is accomplished using the default channel available.
D. Three channels for the tape drive must be configured by setting the parallelism to three.
单项选择题 You need to perform an online table redefinition of an existing SALES table to partition it into two tablespaces TBS1 and TBS2. The SALES table has a materialized view， materialized log， indexes， referential integrity constraint， and triggers with the PRECEDES clause existing on it. What action is required for dependent objects when you perform online table redefinition？（）
单项选择题 In your database， the RESULT_CACHE_MODE parameter has been set to MANUAL in the initialization parameter file. You issued the following command： SQL>SELECT /*+ RESULT_CACHE */ sale_category， sum（sale_amt） FROM sales GROUP BY sale_category； Where would the result of this query be stored（）？
多项选择题 WhichtwoaretheprerequisitestoenableFlashbackDataArchive？（）