You want to estimate the size of a table by using the Oracle Enterprise Manager.  On which data is the size of the table NOT based？（）

单项选择题You issued the following statement in your SQL*Plus session：   SQL>ALTER SESSION ENABLE RESUMABLE TIMEOUT 600；   Which operation is neither suspended nor resumed using the Automatic Resumable Allocation feature in your database？（）

A. creating a table in your schema and you exceed your allocated space quota on the tablespace
B. executing a long query that involves a sort operation and the statement runs out of temporary space
C. loading data into tables by using the SQL*Loader and the number of extents in the table reaches the maximum limit
D. creating a table in a dictionary-managed tablespace with an explicit MAXEXTENTS setting which results in an out of space error

多项选择题You have the following online redo log configuration：    Group       Member   1     ’ disk1 oradata redo01a.log’   2     ’ disk2 oradata redo02a.log’   3     ’ disk3 oradata redo03a.log’   You decide to multiplex the online redo log groups for recovery of redo log files in case of any disaster. Which two statements will you NOT issue to multiplex the online redo log files？（）

A. ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo01b.log’ TO GROUP 1；
B. ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo01b.log’ TO GROUP 1；
C. ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo02b.log’ TO GROUP 2；
D. ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo02b.log’ TO GROUP 2；
E. ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo3b.log’ TO GROUP 3；
F. ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo3b.log’ TO GROUP3；

单项选择题YouaremaintainingyourOLTPdatabaseinOracle10g.YouhavenotsetthewarninglevelandcriticallevelthresholdvaluesforspaceusageoftheDATA1tablespace.Whatwillbetheimpact？（）

A. No warning level or critical level alert will be generated.
B. A warning level alert will never be generated， but a critical level alert will be generated when 97 percent space of the DATA1 tablespace is used.
C. A critical level alert will never be generated， but a warning level alert will be generated when 85 percent space of the DATA1 tablespace is used.
D. A warning level alert will be generated at 85 percent space usage of the DATA1 tablespace， and a critical level alert is generated at 97 percent space usage of the DATA1 tablespace.

单项选择题You issued the following statement to monitor the usage of the index：        SQL> ALTER INDEX SCOTT.EMP_IDX MONITORING USAGE；   Which view will you query to ensure that the index is being monitored？（）

A. INDEX_STATS
B. DBA_INDEXES
C. DBA_IND_COLUMNS
D. V$OBJECT_USAGE

单项选择题You discover an out-of-space condition in the database. You decide to suspend a session for five minutes. You issue the following command to suspend the session：   ALTER SESSION ENABLE RESUMABLE；   Which command could you issue to enable the resumable space allocation feature at the session level？（）

A. ALTER SESSION ENABLE RESUMABLE_TIMEOUT = 5；
B. ALTER SYSTEM ENABLE RESUMABLE_TIMEOUT = 5；
C. ALTER SESSION ENABLE RESUMABLE_TIMEOUT = 300；
D. ALTER SYSTEM ENABLE RESUMABLE TIMEOUT = 300；