You work as a database administrator for Supportcenter.cn. Your database is opened inNOARCHIVEKLOG mode. You decide to place the database in ARCHIVELOG mode. How would you do this？（） Execute the ALTER DATABASE ARCHIVELOG statement。 Select ARCHIVELOG option in the database control and restart the database to apply the changes.。 Shut down and start the instance， and in the NOMOUNT state execute the ALTER DATABASE ARCHIVELOG statement.。 Shut down and start the instance， mount the database， then execute the ALTER DATABASE ARCHIVELOG statement.。
产业布局条件是指（） A.产业布局时的内部环境 。 B.产业布局时的外部环境 。 C.物质化的硬环境 。 D.物质化的软环境。
The system hangs at boot time after starting NFS services. What is the most likely cause？（） The action parameter of rcnfs in /etc/inittab is ’off’ and the script called is not exiting.。 The action parameter of rcnfs in /etc/inittab is ’wait’ and the script called is not exiting.。 The action parameter of rcnfs in /etc/inittab is ’once’ and the script called is not exiting.。 The action parameter of rcnfs in /etc/inittab is ’respawn’ and the script called is not exiting。
在水电工程建设监理招标程序中，现场考察是必不可少的环节，且应安排在（）两项工作之间进行。 A.发售招标公告和资格预审 。 B.资格预审和发售招标文件 。 C.发售招标公告和发售招标文件 。 D.发售招标文件和投标预备会。
Evaluate this SQL statement: SELECT e.employee_id, (.15* e.salary) + (.5 * e.commission_pct) + (s.sales amount * (.35 * e.bonus)) AS CALC_VALUE FROM employees e, sales s WHERE e.employee_id = s.emp_id; What will happen if you remove all the parentheses from the calculation? （） The value displayed in the CALC_VALUE column will be lower.。 The value displayed in the CALC_VALUE column will be higher.。 There will be no difference in the value displayed in the CALC_VALUE column.。 An error will be reported.。
Which TWO of the following are required to use the hot-swap memory feature of the x445 while being operating system independent？（）
