[单选]
To generate recommendations to improve the performance of a set of SQL queries in an application, you execute the following blocks of code:

The blocks of code execute successfully; however, you do not get the required outcome. What could be the reason?（）

A . A template needs to be associated with the task.
B . A workload needs to be associated with the task.
C . The partial or complete workload scope needs to be associated with the task.
D . The type of structures (indexes, materialized views, or partitions) to be recommended need to be specified for the task.

工程成本中，直接成本由人工费、材料费、机械使用费和（）组成。其他直接费。间接费。措施费。税费。 You want to import schema objects of the HR user using Oracle Data Pump from the development database，DEVDB， to the production database， PRODDB. A database link devdb.us.oracle.com is created betweenPRODDB and DEVDB. You execute the following command on the PRODDB database server：$ impdp system/manager directory = DB_DATAdumpfile = schemas.datschemas = hr flashback_time = "TO_TIMESTAMP（’25-08-2007 14：35：00’， ’DD-MM-YYYY HH24：MI：SS’）"The command fails displaying the following error：ORA-39001： invalid argument valueORA-39000： bad dump file specification ORA-31640： unable to open dump file "/home/oracle/schema/schemas.dat" for read ORA-27037： unable toobtain file status What would you do to overcome the error（） Add the user， SYSTEM， to the schemas option.。 Add the network_link = devdb.us.oracle.com option.。 Change the dumpfile option to schema.dat@devdb.us.oracle.com.。 Replace the schemas option with the network_link = devdb.us.oracle.com。 Replace the dumpfile option with the network_link = devdb.us.oracle.com。属于一级信息源的文献是（），优点是（） You execute the following command to audit the database activities： SQL> AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL; What is the effect of this command？（） One audit record is created for the whole session if user SCOTT successfully drops one or more tables in his session.。 One audit record is created for every session when any user successfully drops a table owned by SCOTT.。 One audit record is created for each successful DROP TABLE command executed by any user to drop tables owned by SCOTT.。 One audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege to other users in his session.。 One audit record is created for each successful DROP TABLE command executed in the session of SCOTT.。不接地中性线相色漆规定涂为（）色。黑。紫。兰。

To generate recommendations to improve the performance of a set of SQL queries in an application, you execute the following blocks of code:

The blocks of code execute successfully; however, you do not get the required outcome. What could be the reason?（）

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[单选] To generate recommendations to improve the performance of a set of SQL queries in an application, you execute the following blocks of code: The blocks of code execute successfully; however, you do not get the required outcome. What could be the reason?（）

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[单选]
To generate recommendations to improve the performance of a set of SQL queries in an application, you execute the following blocks of code:

The blocks of code execute successfully; however, you do not get the required outcome. What could be the reason?（）