On which two database objects can the VERSIONS clause of the Flashback Versions Query be used?（）

多项选择题Which two initialization parameters would you set to enable Automatic Shared Memory Management?（）

A. set SHARED_POOL_SIZE to zero
B. set STATISTICS_LEVEL to BASIC
C. set SGA_TARGET to a non-zero value
D. set DB_CACHE_SIZE to a non-zero value
E. set STATISTICS_LEVEL to TYPICAL or ALL

单项选择题An online tablespace, TEST_TBS, is full and you realize that no server-managed tablespace threshold alerts were generated for the TEST_TBS tablespace. What could be the reason, if the TEST_TBS tablespace does not include autoextensible data files?（）

A. TEST_TBS is a small file tablespace.
B. TEST_TBS is a bigfile tablespace (BFT).
C. TEST_TBS is the default temporary tablespace.
D. TEST_TBS is a dictionary-managed tablespace.

单项选择题Which method would you use to undo the changes made by a particular transaction without affecting the changes made by other transactions?（）

A. point-in-time recovery
B. execute the ROLLBACK command with transaction number
C. flashback the database to before the transaction was committed
D. determine all the necessary undo SQL statements from FLASHBACK_TRANSACTION_QUERY and use them for recovery

单项选择题Which of the following advisors within the Oracle advisory framework will analyze a single SQL statement and make recommendations for performance improvement?（）

A. SQL Repair Advisor
B. SQL Optimizer
C. SQL Access Advisor
D. SQL Tuning Advisor SQL

多项选择题For which two situations would you use functionality provided by the Resource Manager?（）

A. setting idle timeout limits on resource plans
B. saving storage space by using compressed backup sets
C. creating jobs that will run automatically at a scheduled time
D. assigning priorities to jobs to manage access to system resources
E. creating alerts to perform notification when tablespaces are low on available space resources