Segment Advisor for TABLES using DBMS_ADVISOR

Segment Advisor for TABLES using DBMS_ADVISOR

The segment advisor performs analysis on the fragmentation of specified tablespaces, segments or objects and makes recommendations on how space can be reclaimed. The advisor is accessible from Enterprise Manager (Home) > Advisor Central > Segment Advisor) or from PL/SQL by using the DBMS_ADVISOR package:

Segment Advisor Using DBMS_ADVISOR:

 -- Create a segment advisor task for the  COR_TRANS_GL_HIST table.

DECLARE
  l_object_id  NUMBER;

BEGIN

-- Create a segment advisor task for the ULTIMUS.COR_TRANS_GL_HIST table.
DBMS_ADVISOR.create_task (
    advisor_name    => 'Segment Advisor',
    task_name         => 'GL_HIST_SEGMENT_ADVISOR',
    task_desc          => 'Segment Advisor For COR_TRANS_GL_HIST');

DBMS_ADVISOR.create_object (
    task_name   => 'GL_HIST_SEGMENT_ADVISOR',
    object_type => 'TABLE',
    attr1       => 'ULTIMUS',
    attr2       => 'COR_TRANS_GL_HIST',
    attr3       => NULL,
    attr4       => 'null',
    attr5       => NULL,
    object_id   => l_object_id);

DBMS_ADVISOR.set_task_parameter (
    task_name => 'GL_HIST_SEGMENT_ADVISOR',
    parameter => 'RECOMMEND_ALL',
    value     => 'TRUE');

DBMS_ADVISOR.execute_task(task_name => 'GL_HIST_SEGMENT_ADVISOR');

END;
/


Display the Findings:


SELECT f.task_name,
       f.impact,
       o.type      AS object_type,
       o.attr1     AS schema,
       o.attr2     AS object_name,
       f.message,
       f.more_info
  FROM dba_advisor_findings f
  JOIN dba_advisor_objects o
    ON f.object_id = o.object_id
   AND f.task_name = o.task_name
 WHERE f.task_name IN ('GL_HIST_SEGMENT_ADVISOR')
 ORDER BY f.task_name, f.impact DESC;

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