st: Large data set and post-saving problems

[Bilge Eris <bilge.eris@marmara.edu.tr>]

Hi to all,

I have a question about studying with large datasets and problems 
occuring after "save.., raplace".

I am working with a data set with 1.5 million rows, and 20 columns in 
the beginnig. For this reason I can not work on my oersonel computer, I 
am working on my university's server.

I am creating necesarry dummies for my work(like around 700 dummies). 
They are being created properly. Before saving the new file, I am 
checking for some simple stats for variables, everything seems to be OK. 
But after saving the new file with a new name and using replace command 
in any case; clearing and using the lastly saved dataset, some of my 
variables start to have troubles! I really don't know what is happening 
really, but it seems that variables shift into each other.

For example when I tabulate gender(which was inherent before creating 
dummies), the following output arrives:

  gender |      Freq.     Percent        Cum.
------------+-----------------------------------
         -1 |         43        0.00        0.00
          w |    481,424       35.46       35.46
          m |    876,354       64.54      100.00
          4 |          2        0.00      100.00
         94 |          1        0.00      100.00
------------+-----------------------------------
      Total |  1,357,824      100.00

And this is not the case always. When I do everything from the 
beginning, I obtain totally different variables and tabulations in the 
end.

I am using an offical Stata 10.1, I tried update all, update swap, and 
all other recommendations under this topic, but is still does not work.

Do you have any idea how I can come over this problem?
Thank you.

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/