从工作性质上看，幼儿园工作计划可分为（） 长、中、短期计划。 全国、部门和个人计划。 常规性和临时性工作计划。 上学期计划和下学期计划。
Identify three reasons that explain why assigning more than one managed serve achieve better performance than running one managed server with more resources?（） Thread management inside the JVM process might be less effective than context switching between processes on the OS level. It is better to combine both these technologies to achieve full saturation of resources.。 Current CPUs are multicore units. So starting managed servers in the amount of physical cores and pinning them 1:1 to cores will always get the best performance.。 By a combination of prioritization of processes on the OS level and Work Manager in WLS, one could tune the whole environment more precisely.。 Assigning more than one managed server to hardware will never bring better performance. 。 More instances means more connections to databases, so one could serve more concurrent calls on the database level. This is primarily why this approach will give better performance numbers. 。 Depending on the profile of the application, having more JVMs with smaller heaps will lead to more predictable response times than fewer JVMs with a large heap.。
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You are maintaining your database in Oracle10g. You want to store the information about the backup of the database in the control file. You issue the following statement： SQL>ALTER SYSTEM SET CONTROL_FILE_RECORD_KEEP_TIME=400； What is the outcome of this statement？ （） The statement will not execute successfully.。 The statement will execute successfully， and the backups metadata will be maintained in the control file for 400 days。 The statement will execute successfully， and the backups metadata will be maintained in the recovery catalog for 400 days.。 Backups will be deleted from the media after 400 days.。
实行最严格的水资源管理制度要建立四项制度，这四项制度不包括（） 建立用水总量控制制度。 建立用水效率控制制度。 建立水资源分配制度。 建立水功能区限制纳污制度。
You are managing an ASM instance. You previously issued the following statements：
ALTER DISKGROUP dg1 DROP DISK disk2；
ALTER DISKGROUP dg1 DROP DISK disk3；
ALTER DISKGROUP dg1 DROP DISK disk5；
You want to cancel the disk drops that are pending for the DG1 disk group.
Which statement should you issue？（）
