[每日一题] 11gOCP 1z0-053 :2013-10-13 MEMORY_TARGE初始化参数..................................51
2013-10-13 22:33
441 查看
转载请注明出处:http://blog.csdn.net/guoyjoe/article/details/12688487
![](http://img.blog.csdn.net/20131013222951765?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvZ3VveUpvZQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast)
正确答案ABC 这道题比较简单,MEMORY_TARGET参数是Oracle11g中才有的,下面我们这幅图很清楚的描述了Oracle内存的关系:
![](http://img.blog.csdn.net/20131013223042406?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvZ3VveUpvZQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast)
参数memory_max_target、 memory_target、sga_max_size、sga_target、pga_aggregate_target的关系:
答案解析:答案A正确,memory_target参数的值可以小等等于memory_max_target参数的值,看下面的图。
![](http://img.blog.csdn.net/20131013223212953?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvZ3VveUpvZQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast)
答案B正确,如果memory_target参数不设,那么memory_max_target默认为0答案C正确,如上图1-1,memory_target包括PGA和SGA答案D不正确,memory_target参数可以直接在内存上修改,马上生效而无须重启数据库。
QQ:252803295
技术交流QQ群:
DSI&Core Search Ⅰ 群:127149411(2000人技术群:未满)
DSI&Core Search Ⅱ 群:177089463(1000人技术群:未满)
DSI&Core Search Ⅲ 群:284596437(500人技术群:未满)
DSI&Core Search Ⅳ 群:192136702(500人技术群:未满)
DSI&Core Search Ⅴ 群:285030382(500人闲聊群:未满)
MAIL:dbathink@hotmail.com
BLOG: http://blog.csdn.net/guoyjoe
WEIBO:http://weibo.com/guoyJoe0218
ITPUB: http://www.itpub.net/space-uid-28460966.html
OCM: http://education.oracle.com/education/otn/YGuo.HTM
ACONG: http://www.acoug.org/category/membership
正确答案ABC 这道题比较简单,MEMORY_TARGET参数是Oracle11g中才有的,下面我们这幅图很清楚的描述了Oracle内存的关系:
参数memory_max_target、 memory_target、sga_max_size、sga_target、pga_aggregate_target的关系:
(1) sga_target=0 ,pga_aggregate_target=0 -〉完全自动管理,SGA=memory_target*60% PGA=memory_target*40%
(2) sga_target=600(最小值) ,pga_aggregate_target=200(最小值) -〉memory_target=sga_target+pga_aggregate_target
(3) sga_target=600,pga_aggregate_target=0 -〉pga_aggregate_target=memory_target-sga_target
(4) sga_target=0,pga_aggregate_target=200 -〉sga_target=memory_target-pga_aggregate_target
答案解析:答案A正确,memory_target参数的值可以小等等于memory_max_target参数的值,看下面的图。
答案B正确,如果memory_target参数不设,那么memory_max_target默认为0答案C正确,如上图1-1,memory_target包括PGA和SGA答案D不正确,memory_target参数可以直接在内存上修改,马上生效而无须重启数据库。
gyj@OCM> select ISSYS_MODIFIABLE from v$parameter where name='memory_target'; ISSYS_MOD --------- IMMEDIATE gyj@OCM> show parameter memory_target NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ memory_target big integer 804M sys@OCM> alter system set memory_target=900M; System altered. sys@OCM> show parameter memory_target NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ memory_target big integer 900M
QQ:252803295
技术交流QQ群:
DSI&Core Search Ⅰ 群:127149411(2000人技术群:未满)
DSI&Core Search Ⅱ 群:177089463(1000人技术群:未满)
DSI&Core Search Ⅲ 群:284596437(500人技术群:未满)
DSI&Core Search Ⅳ 群:192136702(500人技术群:未满)
DSI&Core Search Ⅴ 群:285030382(500人闲聊群:未满)
MAIL:dbathink@hotmail.com
BLOG: http://blog.csdn.net/guoyjoe
WEIBO:http://weibo.com/guoyJoe0218
ITPUB: http://www.itpub.net/space-uid-28460966.html
OCM: http://education.oracle.com/education/otn/YGuo.HTM
ACONG: http://www.acoug.org/category/membership
相关文章推荐
- [每日一题] 11gOCP 1z0-053 :2013-10-13 MEMORY_TARGE初始化参数..................................51
- [每日一题] 11gOCP 1z0-053 :2013-10-12 RESULT_CACHE在哪个池?.............................44
- [每日一题] 11gOCP 1z0-053 :2013-10-1 persistent lightweight jobs...........................11
- [每日一题] 11gOCP 1z0-053 :2013-10-3 large ASM files--- variable extent size....................15
- [每日一题] 11gOCP 1z0-053 :2013-09-29 Flashback Data Archive ...................................6
- [每日一题] 11gOCP 1z0-053 :2013-10-11 Flashback Data Archive属性.........................43
- [每日一题] 11gOCP 1z0-053 :2013-09-29 Flashback Data Archive ...................................6
- [每日一题] 11gOCP 1z0-053 :2013-10-15 duplexing of the backups............................60
- [每日一题] 11gOCP 1z0-053 :2013-10-5 SQL Access Advisor.........................................23
- [每日一题] 11gOCP 1z0-053 :2013-10-8 attribute for an individual disk group.....................73
- [每日一题] 11gOCP 1z0-053 :2013-10-10 materialized view---- online redefinition ...................35
- [每日一题] 11gOCP 1z0-053 :2013-10-14 普通文件损的最佳恢复步骤.................................54
- [每日一题] 11gOCP 1z0-053 :2013-09-30 ASMCMD.......................................................8
- [每日一题] 11gOCP 1z0-053 :2013-10-5 SQL Access Advisor.........................................23
- [每日一题] 11gOCP 1z0-053 :2013-10-8 attribute for an individual disk group.....................73
- [每日一题] 11gOCP 1z0-053 :2013-10-9 backup with the KEEP option....................................33
- [每日一题] 11gOCP 1z0-053 :2013-10-10 materialized view---- online redefinition ...................35
- [每日一题] 11gOCP 1z0-053 :2013-09-30 ASMCMD.......................................................8
- [每日一题] 11gOCP 1z0-053 :2013-10-6 significance of the CHANGE FAILURE ..................25
- [每日一题] 11gOCP 1z0-053 :2013-10-9 backup with the KEEP option....................................33