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oraclestatspack实例

发布时间:2006-06-28 10:04     点击:
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  along with any other conflicting parameters:

  ALTER SYSTEM RESET timed_statistics scope=spfile sid='*';

  This setting will not take effect until the database is restarted.

  At this point the affect of the statistics level can be shown using the following query:

  COLUMN statistics_name FORMAT A30 HEADING "Statistics Name"

  COLUMN session_status FORMAT A10 HEADING "Session|Status"

  COLUMN system_status FORMAT A10 HEADING "System|Status"

  COLUMN activation_level FORMAT A10 HEADING "Activation|Level"

  COLUMN session_settable FORMAT A10 HEADING "Session|Settable"

  SELECT statistics_name,

      session_status,

      system_status,

      activation_level,

      session_settable

  FROM  v$statistics_level

  ORDER BY statistics_name;

  A comparison between the levels can be shown as follows:

  SQL> ALTER SYSTEM SET statistics_level=basic;

  System altered.

  SQL> SELECT statistics_name,

  2      session_status,

  3      system_status,

  4      activation_level,

  5      session_settable

  6 FROM   v$statistics_level

  7 ORDER BY statistics_name;

              Session   System    Activation   Session

Statistics Name       Status   Status    Level     Settable

-----------------------  ----------- ---------- -------------- ------------

Buffer Cache Advice     DISABLED  DISABLED    TYPICAL     NO

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