單項(xiàng)選擇題

What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）

A. An upper limit on how far you can flash back the database, depending on the information in the redo logs
B. An upper limit on how far you can flash back the database, depending on the information in the undo tablespace
C. The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough space
D. The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace, provided that there is enough space

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多項(xiàng)選擇題

Identify the activities performed as part of the Automatic SQL Tuning process in the maintenance window？（）

A. generating the SQL profile
B. testing and accepting the SQL profile
C. generating a list of candidate SQLs for tuning
D. adding tuned SQL plans into the SQL plan baseline
E. tuning each SQL statement in the order of importance
F. generating baselines that include candidate SQLs for tuning

多項(xiàng)選擇題

You issued the following command：
CREATE GLOBAL TEMPORARY TABLE admin_work_area
（startdate DATE， enddate DATE， class CHAR（20）） ON COMMIT DELETE ROWS TABLESPACE tbs_t1；
An index is then created on the ADMIN_WORK_AREA temporary table.
Which two statements are true regarding the TBS_T1 tablespace in the above command？（）

A. It stores only the temporary table but not its indexes.
B. It stores both the temporary table as well as its indexes.
C. It must be a nondefault temporary tablespace for the database.
D. It can be a default or nondefault temporary tablespace for the database.
E. It must be the default temporary tablespace of the user who issues the command.

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What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）

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Identify the activities performed as part of the Automatic SQL Tuning process in the maintenance window？（）

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Identify the activities performed as part of the Automatic SQL Tuning process in the maintenance window？（）