in 10g, Oracle data files are made "platform aware" -- that is, the file headers store detailed platform information. the new v$transportable_platform view will show you the full list of supported platforms. so in 9i this is unsupported; you need 10g. if certain "tricks" work, you are on your own. Lex. ---------------------------------------------------------------- Tom Kyte Seminar: http://www.naturaljoin.nl/events/seminars.html ---------------------------------------------------------------- -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of biti_rainy Sent: Thursday, January 20, 2005 11:18 To: 'oracle-l' Subject: Re: RE: (NEW) very interesting thing about migrate db from different OS(oracle 9.2.0.4,not 10G) hi,Lex de Haan thanks for your reply. i had read oracle 10i beta document on May-2003 ,when i saw the feature i am very intersting ,but at that time i do not test it beacause there is only version for HP unix,Sun soalris and linux ,and i have not these platforms. today,i want to know why and how. Best regards msn: biti_rainy@xxxxxxxxxxx a dba from alibaba(china) ---- from the mail----- > >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. > >---------------------------------------------------------------- >Tom Kyte Seminar: http://www.naturaljoin.nl/events/seminars.html >---------------------------------------------------------------- > > >-----Original Message----- >From: oracle-l-bounce@xxxxxxxxxxxxx >[mailto:oracle-l-bounce@xxxxxxxxxxxxx] >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@xxxxxxxxxxx >a dba from alibaba(china) > > >-- >//www.freelists.org/webpage/oracle-l > ã??ã??ã??ã??ã??ã??ã??ã?? -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l