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I'm assuming the source table is not within Oracle ?
I've had success with using SQL*Loader from .DAT files. I had to export tables from SQLServer2000 using BCP. As far as I know, it is the most efficient way to import data from outside Oracle.
Some shortcomings of SQL*Loader show up when you have CLOB columns with carriage returns/line feeds. I ended up replacing those non-printable characters with a temporary character string when creating the .DAT file and then replacing in the target table after the load completed. I suppose there are better ways to do this and I'd be glad to hear any other thoughts on this topic.
Kurt
-- ---------------------------------------------------- This mailbox protected from junk email by MailFrontier Desktop from MailFrontier, Inc. http://info.mailfrontier.com "JohnP" <johnp_at_optonline.net> wrote in message news:BXMcd.3646$YM4.761411_at_news4.srv.hcvlny.cv.net...Received on Wed Oct 27 2004 - 08:03:45 CDT
> I need to write an ado app that reads a 27million record table, process it
> and insert it into a new table.
> Unfortunately I have no choice on the use of ADO.
>
> My question is, on the inserts am I better off using a Command object and
> specify not to return any record sets. Or should I use the Recordset
object
> and specify lockbatchoptimistic?
>
> I know I should check to see if the 0040 driver/interface is being used.
>
> Also, for the reads and writes should I use client side or server side
> cursors. I really do not need any transaction processing. The table will
not
> be accessed during the process.
>
> So far it seems that writing the data to a text file and then using the
bulk
> insert utility( or whatever it is called) is the fastest but again that is
> not desired by others.
>
>
> So any feed back is greatly appreciated
>
>
> johnp
>
>