How to calculate statistics stale %

Hi All,
i have configured automatic statistics gathering job in my database(11.2.0.4) to calculate object statistics with stale % a>= 10. I am having a doubt how Oracle calculates stale percentage of an object. I did search in OTN discussion and found the below querry
SELECT DT.OWNER,
       DT.TABLE_NAME,
       ROUND ( (DELETES + UPDATES + INSERTS) / NUM_ROWS * 100) PERCENTAGE
FROM   DBA_TABLES DT, DBA_TAB_MODIFICATIONS DTM
WHERE      DT.OWNER = DTM.TABLE_OWNER
       AND DT.TABLE_NAME = DTM.TABLE_NAME
       AND NUM_ROWS > 0
       AND ROUND ( (DELETES + UPDATES + INSERTS) / NUM_ROWS * 100) >= 10
       AND OWNER IN ('OWNER_NAME’')
ORDER BY 3 desc;
but the query is displaying me output with stale % more than 100 and also statistics is not gathered for few of the tables listed by this query.
Thanks and Regards,
Alex Augustine

As far as I know, there is nothing to calculate here. Of course you can measure it. But what exactly do you want to achieve?

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09891683828
[email protected]

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