（单选题）
In your datawarehousing application， you generate reports frequently. The data is static in the tables being used to generate reports. You are currently using joins， resulting in a large performance overhead. What kind of database structure would you use to reduce the response time of the query？（）
Ahash clusters
Bindex clusters
Cpartitioned tables
Dindex-organized table （IOT）
正确答案
答案解析
略
相似试题
（多选题）
Your database in running in the ARCHIVELOG mode. You issue the following command to back up datafile 2 in your database. RMAN> COPY DATAFILE 2 TO ’D:///ORACLE/ORA90/MYNEWDB/DA2.DBF’； Which two statements are true regarding the backup created using this command？（）
（单选题）
ou have a large amount of historical data in a flat file. Some analysts in your organization need to query thisdata in the file. The file is too large to load the data in it into your current database. Which is the most effectivemethod to access this data in your database（）
（单选题）
You have a large amount of historical data in a flat file. Some analysts in your organization need toquery this data in the file. The file is too large to load the data in it into your current database. Which is the most effective method to access this data in your database（）
（单选题）
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？（）
（单选题）
Your database is configured in shared server mode. However， your senior DBA asks you to modify the value ofthe PRIVATE_SGA limit in the profile of the users. What could be the reason for this（）
（单选题）
Your database is configured in shared server mode. However， your senior DBA asks you to modifythe value of the PRIVATE_SGA limit in the profile of the users. What could be the reason for this（）
（单选题）
In your database instance， the STATISTICS_LEVEL initialization parameter is set to BASIC. What isthe impact of this setting（）
（单选题）
in your database instance， the STATISTICS_LEVEL initialization parameter is set to BASIC. What is the impactof this setting（）
（单选题）
You executed the following query in your database： FROM V$FLASHBACK_DATABASE_LOG; What would you determine from the output？（）
（多选题）
You are working in a dedicated server environment. Your database is running in the automatic Program Global Area （PGA） memory management mode. Which two statements are correct in this scenario？（）
