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  • 如何查看,更改隐含参数

     可以使用如下脚本查看隐含参数
    SELECT x.ksppinm NAME, y.ksppstvl VALUE, x.ksppdesc describ
    FROM SYS.x$ksppi x, SYS.x$ksppcv y
    WHERE x.inst_id = USERENV ('Instance')
    AND y.inst_id = USERENV ('Instance')
    AND x.indx = y.indx
    AND x.ksppinm LIKE '%&par%'
    /

    例如我要查看 _shared_pool_reserved_min_alloc隐含参数

    SQL> SELECT x.ksppinm NAME, y.ksppstvl VALUE, x.ksppdesc describ
      2  FROM SYS.x$ksppi x, SYS.x$ksppcv y
      3  WHERE x.inst_id = USERENV ('Instance')
      4  AND y.inst_id = USERENV ('Instance')
      5  AND x.indx = y.indx
      6  AND x.ksppinm LIKE '%&par%'
      7  /
    Enter value for par: _shared_pool_reserved_min
    old   6: AND x.ksppinm LIKE '%&par%'
    new   6: AND x.ksppinm LIKE '%_shared_pool_reserved_min%'

    NAME                                VALUE      DESCRIB
    ----------------------------------- ---------- ------------------------------
    _shared_pool_reserved_min_alloc     4100       minimum allocation size in bytes for reserved area of shared pool

    修改隐含参数

    SQL> alter system set "_shared_pool_reserved_min_alloc"=4400 scope=spfile;

    System altered.

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  • 原文地址:https://www.cnblogs.com/hehe520/p/6330683.html
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