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Home -> Community -> Mailing Lists -> Oracle-L -> RE: (NEW) very interesting thing about migrate db from different OS(oracle 9.2.0.4,not 10G)
if you look at the various releases of Oracle, up til the current one (10g),
you can see that Oracle has been working on this -- for a perfect example,
check out the transportable tablespace feature. initially very limited, but
now (in 10g) quite useful.
therefore, it is obvious that certain "tricks" work in certain releases.
this having said, what you describe below in highly unsupported -- which
means that you are completely on your own (i.e. no support) if things go
wrong.
hope this helps, kind regards,
Lex.
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]
On Behalf Of biti_rainy
Sent: Thursday, January 20, 2005 07:24
To: oracle-l
Subject: (NEW) very interesting thing about migrate db from different
OS(oracle 9.2.0.4,not 10G)
hi,all
we find a very interesting thing:
we copy the WINDOWS2000 datafile to linux (they have the same byte order)
and , dd a linux datafile header to cover the windows datafile header(the header block is not include in dba_data_files),the block is not seem in database ,it is for OS. ls -l can see ,the datafile size is bigger than dba_data_files for one oracle block.
when we change the OS file header,we can create controlfile and open the database ,and we can query /create table ... etc.
the db version is oracle9204,not 10g. and someone told me that he can copy the datafile from windows and solaris for x86 pc to linux , and not change the header with oracle8i.
is there someone can discuss it?
Best regards
msn: biti_rainy_at_hotmail.com
a dba from alibaba(china)
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Received on Thu Jan 20 2005 - 04:04:09 CST
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