Scripts:查询sga中各组件使用率的脚本perf_sga_usage.sql

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-- |                          Jeffrey M. Hunter                                 |

-- |                      jhunter@idevelopment.info                             |

-- |                         www.idevelopment.info                              |

-- |----------------------------------------------------------------------------|

-- |      Copyright (c) 1998-2011 Jeffrey M. Hunter. All rights reserved.       |

-- |----------------------------------------------------------------------------|

-- | DATABASE : Oracle                                                          |

-- | FILE     : perf_sga_usage.sql                                              |

-- | CLASS    : Tuning                                                          |

-- | PURPOSE  : Report on all components within the SGA.                        |

-- | NOTE     : As with any code, ensure to test this script in a development   |

-- |            environment before attempting to run it in production.          |

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SET LINESIZE 145

SET PAGESIZE 9999

SET FEEDBACK off

SET VERIFY   off

COLUMN bytes   FORMAT  999,999,999

COLUMN percent FORMAT  999.99999

break on report

compute sum of bytes on report

compute sum of percent on report

SELECT

    a.name

  , a.bytes

  , a.bytes/(b.sum_bytes*100)  Percent  

FROM sys.v_$sgastat a

   , (SELECT SUM(value)sum_bytes FROM sys.v_$sga) b 

ORDER BY bytes DESC

/