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Message Posted: Thu, 22 Dec 2011 @ 09:06:30 GMT

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<-- Anonymously Posted: Wednesday, December 21, 2011 23:49 -->

Hi,

The below query will get you all the tables with compression and their current perm size.

     SELECT dbt.DATABASENAME,
            dbt.TABLENAME,
            MAX(CASE WHEN (compressvaluelist IS NOT NULL)
                     THEN (CASE WHEN INDEX(compressvaluelist,',') > 0
                                THEN '3. MVC '
                                ELSE '2. SVC '
                                END)
                     ELSE '1. NONE'
                     END) COMPRESS_TYPE,
            MIN(pds.Current_Perm) CURRENT_PERM

       FROM dbc.columns dbt,

           (SELECT t.DATABASENAME,
                   t.TABLENAME,
                   SUM(ts.CurrentPerm) CURRENT_PERM
              FROM DBC.Tables t,
                   DBC.TableSize ts
             WHERE t.DATABASENAME = ts.DATABASENAME
               AND t.TABLENAME = ts.TABLENAME
               AND ts.TABLENAME <> 'ALL'
            HAVING CURRENT_PERM > 1000000000
             GROUP BY 1,2) pds


       where  dbt.DATABASENAME = pds.DATABASENAME
       AND dbt.TABLENAME = pds.TABLENAME

     -- HAVING COMPRESS_TYPE = '1. NONE'

     GROUP BY 1,2
     ORDER BY 1,3, 4 DESC,2

Based on the result, you can analyze all the tables which are not compressed and then apply compression on then and compare the difference in perm space.

HTH.

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