Difference between dbms_stats and COMPUTE STATISTICS

Hello everyone,
Can anyone tell me what is the difference between:
dbms_stats.gather_table_stats(
    ownname => 'me',
    tabname => 'ORGANISATIONS',
    estimate_percent => dbms_stats.auto_sample_size
);and
ANALYZE TABLE ORGANISATIONS COMPUTE STATISTICS;I guess both method are valid to compute statistics, but when I run the first method, the num_rows in USER_TABLES is wrong.
But when I execute the second method, I get the correct num_rows.
So, what is exactly the difference and which one is best?
Thanks,

Hello,
It's not recommended to use ANALYZE statement to collect Optimizer statistics. So you should use DBMS_STATS.
Else, about the number of rows, as you used an Estimate method, you may have a number of row which is not accurate.
What is the result if you choose this:
estimate_percent => NULL
NB: Here, NULL means COMPUTE.
You may have more detail on the following link:
http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/stats.htm#PFGRF003
This Note from My Oracle Support may give you many useful advices:
Recommendations for Gathering Optimizer Statistics on 10g [ID 605439.1]Hope this help.
Best regards,
Jean-Valentin

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13”
Digital Trends (13") - http://www.digitaltrends.com/laptop-...h-2013-review/
LaptopMag (13") - http://www.laptopmag.com/reviews/lap...play-2013.aspx
Engadget (13") - http://www.engadget.com/2013/10/29/m...-13-inch-2013/
The Verge (13") - http://www.theverge.com/2013/10/30/5...ay-review-2013
CNet (13") - http://www.cnet.com/laptops/apple-ma...-35831098.html
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LaptopMag (15") - http://www.laptopmag.com/reviews/lap...inch-2013.aspx
TechCrunch (15") - http://techcrunch.com/2013/10/25/lat...ok-pro-review/
CNet (15") - http://www.cnet.com/apple-macbook-pro-with-retina-2013/
PC Mag (15") - http://www.pcmag.com/article2/0,2817,2426359,00.asp
Arstechnica (15") - http://arstechnica.com/apple/2013/10...-pro-reviewed/
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Message was edited by: tjk

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