單項(xiàng)選擇題

You are maintaining your database in Oracle10g. You have set the value of the STATISTICS_LEVEL initialization parameter to TYPICAL and the value of the FAST_START_MTTR_TARGET parameter to 900 seconds. To increase the performance of the database， you want to determine the log file size that should equal the minimum size of all the online redo log files. Which column will enable you to perform the desired task？（）

A. the WRITES_LOGFILE_SIZE column of the V$INSTANCE_RECOVERY view
B. the column of the V$INSTANCE_RECOVERY view
C. the OPTIMAL_LOGFILE_SIZE column of the V$INSTANCE_RECOVERY view
D. the LOG_FILE_SIZE_REDO_BLKS column of the V$INSTANCE_RECOVERY view

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單項(xiàng)選擇題

You are creating a cluster. The tables in the cluster have a relatively uniform distribution of values in the index column and the queries against the clustered table will almost use an equality operator to retrieve the desired row. Which type of cluster will you create？（）

A. Index cluster
B. Hash cluster
C. Sorted Hash cluster
D. Real Application Cluster

單項(xiàng)選擇題

You issued the following command：
ALTER TABLE SCOTT.EMP SHRINK SPACE；
The SCOTT.EMP table is stored in the DATA1 tablespace that has the following properties：
DATA1 is a read/write tablespace.
DATA1 is not autoextensible to an unlimited size. DATA1 is online.
Segment space management for the DATA1 tablespace is manual.
You issued the ALTER TABLE SCOTT.EMP SHRINK SPACE； command that generates the following error：
ORA-10635： Invalid segment or tablespace type
What could be the reason for the failure of the command？（）

A. The tablespace， DATA1， is not read-only.
B. The tablespace， DATA1， is not autoextensible.
C. The tablespace， DATA1， is not offline.
D. The segment space management for the tablespace， DATA1， is manual.

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你可能感興趣的試題

You are creating a cluster. The tables in the cluster have a relatively uniform distribution of values in the index column and the queries against the clustered table will almost use an equality operator to retrieve the desired row. Which type of cluster will you create？（）

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You are creating a cluster. The tables in the cluster have a relatively uniform distribution of values in the index column and the queries against the clustered table will almost use an equality operator to retrieve the desired row. Which type of cluster will you create？（）