[单选]

You are working on an instance started using the SPFILE. You want to move the Flash Recovery Area of yourdatabase to a new location. You want the Flashback log files to be stored in the new location. Given below are
the steps to accomplish the task in random order：
1.Shut down the instance.
2.Change the value of the DB_RECOVERY_FILE_DEST initialization parameter to a new value.
3.Execute the ALTER DATABASE FLASHBACK OFF command.
4.Start up the instance and mount the database.
5.Execute the ALTER DATABASE FLASHBACK ON command.
6.Open the database.
Select the correct order in which these tasks need to be performed.（）

真菌毒素中毒？ Which of the following situations would suggest to a System x Sales Specialist that the customer could benefit from an iSCSI solution？（） The customer is looking for a fibre SAN solution to increase reliability and performance.。 The customer wants to implement an energy-efficient solution to comply with their Go Green initiative.。 The customer is cost-conscious and is looking for a centralized storage solution.。 The customer is a large telecommunications firm and is looking to centralize storage for all their System x，System p，and mainframe servers.。 Given two different character sets （A and B）， which of the following must be true for A to be considered a strict superset of B？（）  A must contain all of the characters defined in B。  A must be Unicode。  The encoded values in A must match the encoded values in B for all characters defined in B 。  A must be a multibyte character set。  The encoded values in A must match the encoded values in B for all numeric and alphabetic character。 In your Supportcenter.cn production database，you find that the database users are able to create and read files with unstructured data，available in any location on the host machine from an application. You want to restrict the database users to access files in a specific location on the host machine. What could do to achieve this？（） Modify the value for the UTL_FILE_DIR parameter in the parameter file。 Grant read and write privilege on the operating system path to the database users。 Modify the value for the LDAP_DIRECTORY_ACCESS parameter in the parameter file。 Modify the value for the PLSQL_NATIVE_LIBRARY_DIR parameter in the parameter file。 Create a directory object referring to the operating system path， and grant read and write privilege on the directory object to the database user。 类菌质体在植物体内的存在部分？四环素族抗菌素能否根治类菌质体病害？

You are working on an instance started using the SPFILE. You want to move the Flash Recovery Area of yourdatabase to a new location. You want the Flashback log files to be stored in the new location. Given below are
the steps to accomplish the task in random order：
1.Shut down the instance.
2.Change the value of the DB_RECOVERY_FILE_DEST initialization parameter to a new value.
3.Execute the ALTER DATABASE FLASHBACK OFF command.
4.Start up the instance and mount the database.
5.Execute the ALTER DATABASE FLASHBACK ON command.
6.Open the database.
Select the correct order in which these tasks need to be performed.（）