A consultant has been asked to do a performance analysis on a database server. Which subsystem should the consultant first analyze and why？（） CPU，because the database replication process requires a considerable amount of CPU time。 Memory，because the buffer cache requires a large amount of memory to maintain the data in system memory。 Disk，because it is important to configure a sufficient number of disks to match the CPU processing power。 Network，because the data returned to the client from the server can be a large subset of the total database。
在17、18世纪欧洲国家改革中，说封建专制主义中央集权的加强是一种历史的进步，这主要是因为（）。 有利于国内统一市场的形成。 国家政权提倡大力发展工场手工业。 国家政权积极推行重商主义政策。 可以依靠国家力量开拓海外市场。
Which command will configure a directory /commonfiles so that a user cannot delete files owned by other users in the same group（）？ chmod +S /commonfiles。 chmod 4775 /commonfiles。 chmod 1777 /commonfiles。 chmod -orgx /commonfile。
You issued the following command at the UNIX environment： % setenv ORA_SDTZ ’OZ_TZ’ What will be the impact of issuing the above command？（） The operating system local time zone will be set for a user session using the operating system environment variable.。 The database local time zone will be set for a user session using the operating system environment variable.。 The operating system local time zone will be set for the database using the operating system environment。 The database local time zone will be set for the database using the operating system environment variable.。
某企业为本企业专门自制发电机组一台，本月移送并开始安装，该设备账面成本为35000元，无同类型产品销售价，则应纳销项税额为（）（成本利润率为10%）。 5950元。 6545元。 3850元。 3500元。
Company.com is ordering a new p5-570 and planning for the option of using Capacity on
Demand to activate additional resources in the future.
Which of the following is a prerequisite to support the addition of CPUs or memory without an outage？（）
