Why don't you try it? Create a small database on Alpha, rcp it to
HP and see what happens.
On 2003.06.07 09:39 DENNIS WILLIAMS wrote:
> K
> I'm looking to move a large database from HP/Compaq/DEC Alpha to Sun. Any
> possibility the datafiles might be compatible?
>
> Sashidar
> This was discussed quite a bit on this list 5/14, the subject was
> "quickest method". The consensus seemed to be that:
> 1. SQL*Loader in direct path mode is the fastest. The catch is the hassle
> of getting the data out to a flat file and creating a loader control file.
> 2. Database links and exp/imp are roughly the same speed, so you have to
> test to see which will be fastest for your situation.
> I plan to test these various methods in our environment, since the downtime
> window will be rather small.
> Consider using the 80/20 principle (Pareto's Rule). Typically, just a
> handful of tables contain most of the data. In my case, a single table
> contains about 25% of the data. It is worth the effort to develop a method
> to dump the data to a flat file and to create a loader control file if that
> is the fastest method. For the many small files, just use exp/imp. Please
> update me on any conclusions you reach since this topic is of significant
> interest to me. Thanks.
>
> Dennis Williams
> DBA, 80%OCP, 100% DBA
> Lifetouch, Inc.
> [EMAIL PROTECTED]
>
>
> -----Original Message-----
> Sent: Saturday, June 07, 2003 7:15 AM
> To: Multiple recipients of list ORACLE-L
> or ..
>
>
> Sashidar:
>
>
> In THEORY HP datafiles and Sun data files are compaible. That is you
> can just move the HP data files to the Sun server and recreate the data
> files. Both data files are in same endianness and they are cross
> platform compatible.
>
> There is no tool to convert a datafile from one OS format to another OS
> format. Some time back, some one (Guess who??) tried developing a tool
> and the idea was dropped since Oracle started addressing this issue as
> a standard feature inside the RDBMS product. So there is no third party
> tool available in the market to do that conversion and I don't expect
> any new tools to do that.
>
> Having said that, that above said method is NOT officially supported by
> Oracle in current versions. You have to wait for some more time to get
> that officially supported by Oracle (clue!!)
>
> If you have a faster interconnect CTAS will be much faster than export
> import method, I remember seeing some comparitive numbers in Metalink..
> Have you checked that?
>
>
>
>
> =====
> Have a nice day !!
> ------------------------------------------------------------
> Best Regards,
> K Gopalakrishnan,
> Bangalore, INDIA.
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> Author: K Gopalakrishnan
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Mladen Gogala
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Received on Sat Jun 07 2003 - 10:42:36 CDT
