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实用的数据库检查程序(2)
作者:武汉SEO闵涛  文章来源:敏韬网  点击数2662  更新时间:2009/4/22 23:21:59  文章录入:mintao  责任编辑:mintao
ppropriate values

prompt for LOG_CHECKPOINT_INTERVAL and LOG_CHECKPOINT_TIMEOUT

prompt check the size and number of redo log groups

prompt confirm that the archive device is not full

prompt add redo log groups

prompt increase the number of buffers to archive and reducing the size of buffers by setting

prompt LOG_ARCHIVE_BUFFERS and LOG_ARCHIVE_BUFFER_SIZE

prompt <<<<<<<<<<<<<<<<<<< NOTE: >>>>>>>>>>>>>>>>>>>>>>

prompt

ttitle off

 

prompt

prompt ++++++++++++++++++++++++++++++++++ Item ++++++++++++++++++++++++++++++++++

prompt + 4.0 Share Pool Size - Gets and Misses (Library Cache)                  +

prompt ++++++++++++++++++++++++++++++++++ Item ++++++++++++++++++++++++++++++++++

prompt

 

column "Executions" format 9,999,999,990

column "Cache Misses Executing" format 9,999,999,990

column "Data Dictionary Gets" format 9,999,999,999

column "Get Misses" format 9,999,999,999

column "% Ratio" format 999.99

 

ttitle left skip 1 -

left "*** Shared Pool Size (Execution Misses) ***" skip 1

 

select sum(pins) "Executions",

       sum(reloads) "Cache Misses Executing",

       (sum(reloads)/sum(pins)*100) "% Ratio"

from v$librarycache

/

 

prompt

prompt <<<<<<<<<<<<<<<<<<< NOTE: >>>>>>>>>>>>>>>>>>>>>>

prompt 4.0 Investigation

prompt If % Ratio is above 1% , increase SHARE_POOL_SIZE.

prompt <<<<<<<<<<<<<<<<<<< NOTE: >>>>>>>>>>>>>>>>>>>>>>

prompt

ttitle off

 

prompt

prompt ++++++++++++++++++++++++++++++++++ Item ++++++++++++++++++++++++++++++++++

prompt + 4.1 Share Pool Size - Gets and Misses (Data Dictionary)                +

prompt ++++++++++++++++++++++++++++++++++ Item ++++++++++++++++++++++++++++++++++

prompt

 

ttitle left "*************** Shared Pool Size (Dictionary Gets) ***********" skip 1

select sum(gets) "Data Dictionary Gets",

       sum(getmisses) "Get Misses",

       100*(sum(getmisses)/sum(gets)) "Ratio"

from v$rowcache

/

 

prompt

prompt <<<<<<<<<<<<<<<<<<< NOTE: >>>>>>>>>>>>>>>>>>>>>>

prompt 4.1 Investigation

prompt If % Ratio is above 12% , increase SHARED_POOL_SIZE.

prompt <<<<<<<<<<<<<<<<<<< NOTE: >>>>>>>>>>>>>>>>>>>>>>

prompt

ttitle off

 

prompt

prompt ++++++++++++++++++++++++++++++++++ Item ++++++++++++++++++++++++++++++++++

prompt + 5.0 Check Which SQL is the most cost SQL                               +

prompt ++++++++++++++++++++++++++++++++++ Item ++++++++++++++++++++++++++++++++++

prompt

ttitle off

 

ttitle left "*** V$SQL Check ***" Skip 1

column SQL_TEXT Format A5

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