中华网通行证
用户名 密码
  科技动态 硬件广场 下载基地 网络教室 网络冲浪 科学博览 移动时代 手机上网 桌面壁纸 科技商情  

Oracle DBA 存储管理试题选1
整理:Macro Zeng  2001-03-20 11:31:39

  
  
  Q. 1 : Oracle immediately re-uses the space assigned to row-directory portion of the data block once you delete the corresponding rows.
  
  1. True
  2. False
  
  
  2
  
  
  
  Q. 2 : Which of the following three portions of a data block are collectively called as Overhead.
  
  1. table directory, row directory and row data
  2. data block header, table diretory and free space
  3. table directory, row directory and data blcok header
  4. data block header, row data and row header
  
  
  3
  
  
  Q. 3 : Which portion of the data block contains table or index data
  
  1. table directory
  2. row directory
  3. overhead
  4. row data
  
  
  4
  
  
  Q. 4 : What are the two space management parameters for controling the use of free space in a data block
  
  1. INITIAL and NEXT
  2. PCTFREE and PCTUSED
  3. TABLESPACE and STORAGE
  4. free space cannot be controlled at block level
  
  
  2
  
  
  Q. 5 : The maximum number of transactions that a block can support is
  
  1. 100
  2. 255
  3. 1000
  4. unlimited
  
  
  2
  
  
  Q. 6 : what is PCTFREE
  
  1. A space management parameter which sets aside that much percentage of memory in the data block for future update of existing rows.
  2. A space management parameter which determines the minimum percentage of a block that can be used for row data plus overhead.
  3. A space management parameter which tells Oracle that the block is available for inserts after the percentage of used memory falls below certain percentage.
  4. all of them
  
  
  1
  
  
  
  
  Q. 7 : What is the default value of NEXT parameter
  
  1. 1 block
  2. 2 blocks
  3. 5 blocks
  4. 100 blocks
  
  
  3
  
  
  Q. 8 : Which parameter reserves the more space for future updates
  
  1. high PCTINCREASE
  2. high PCTFREE
  3. high INITIAL
  4. high PCTUSED
  
  
  2
  
  
  Q. 9 : PCTFREE and PCTUSED together should not exceed
  
  1. 100
  2. 50
  3. 25
  4. 10
  
  
  1
  
  
  Q. 10 : Row migration is a result of
  
  1. not enough space in a block for new rows.
  2. not enough memory for sorts
  3. not enough space for updates in the current block
  4. all of them
  
  
  3
  
  
  Q. 11 : Frequent deallocation of extents result in
  
  1. truncated segments
  2. block fragmentation
  3. truncated tablespaces
  4. tablespace fragmentation
  
  4
  
  
  
  Q. 13 : Row migration is a result of
  
  1. high PCTFREE
  2. low PCTFREE
  3. high PCTUSED
  4. low PCTUSED
  
  
  2
  
  
  
  
  Q. 12 : Which background process coalesce the fragmented space
  
  1. SMON
  2. PMON
  3. DBWR
  4. LGWR
  
  1
  
  jsp001.com提供




相关报道
 
更多本栏目内容
??Windows 2000系统安全设置攻略
??Dreamweaver编写CSS需要掌握的技巧
??使用Flash MX过程中的3个小技巧
??拖IE9网站图标到Win7任务栏 精彩好礼任你拿
??从此不再耗流量?Google离线地图试用
??给瑞星添加移动存储自动杀毒功能
??一周壁纸榜单 靓丽风景伴您欢度周末
??金山网络七款软件齐升级 炫丽界面贺新春
??提升网站流量和权重 百度热榜排第一
预警:电商促销引钓鱼 七夕网购需谨慎

本站检索



中华网推荐

·国家级治脑病新药思维源
·中藏药治疗脑病新突破
·治类风湿,强直性脊柱炎
·养肾·痛风·长寿
·肝病泌尿脑萎缩新药介绍
·强直性脊柱炎康复乐园
·让中医辩证不孕不育
·国医治股骨头坏死一绝
·乙肝为何久治不愈?
·二千元垄断批发做老板
·中医中药专治前列腺
·治牛皮癣白癜风已成现实
·专治痛风病的白衣天使
·不孕不育的杏林奇葩
·专卖店零售管理系统





   

网络教室编辑信箱