[单选] You work as a database administrator for Supportcenter.cn. In your production database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections. Which activity must you have completed before accomplishing this task？（）

What can you determine about the following linguistic sorts based only on their names?（） 1. GERMAN 2. FRENCH_M multilingual 1 is a monolingual sort.。 2 is a monolingual sort.。 1 is case insensitive.。 Both 1 and 2 are case insensitive.。 Case sensitivity is unknown.。 如何评估教师教的有效性。 You executed this command to create a temporary table： SQL> CREATE GLOBAL TEMPORARY TABLE report_work_area （startdate DATE， enddateDATE， class CHAR（20）） ON COMMIT PRESERVE ROWS； Which statement is true about the rows inserted into the REPORT_WORK_AREA table during a transaction（） The rows stay in the table only until session termination.。 The rows stay in the table only until the next transaction starts on the table.。 The rows are visible to all current sessions after the transaction is committed.。 The rows stay available for subsequent sessions after the transaction is committed。 What is the danger associated with stopping a running job by using the STOP_JOB procedure？（）    The job will need to be reenabled before it will execute again.。  The job may hold locks on objects referenced within it.。  All jobs within the job group will also be stopped.。  The job may leave data in an inconsistent state.。  There is no danger in using the STOP_JOB procedure.。 正弦交流电变化过程中出现的（），称为最大值。用字母Em、Im、Um表示。 You work as a database administrator for Supportcenter.cn. In your production database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections. Which activity must you have completed before accomplishing this task？（）