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Home -> Community -> Mailing Lists -> Oracle-L -> Re: SQL Server to Oracle DB
SQL Server to Oracle DB...speaking of $0.02, make sure that the utility from SQL Server that produces the "flat" file does not perform unsolicited rounding of numerics. I was recently burned on a Sybase->Oracle conversion when the BCP (a.k.a. "bulk copy") and ISQL (a.k.a. SQL*Plus in Sybase) utilities each implicitly round numeric data to the 2nd digit to the right of the decimal. Since SQL Server comes from Sybase, beware...
In ISQL, I could just divide everything by 1.0000 to get the true precision, but BCP doesn't provide that option. Instead, I wrote a shell script to query the Sybase data dictionary to generate the "C" program sources for each table. The Sybase APIs were perfectly capable of handling numeric precision, but the %&^&#* Sybase developers who wrote ISQL and BCP were too lazy to use them correctly. Since the ODBC driver from MS-Access seemed to use the API correctly (i.e. no implicit rounding seen), then maybe the MS folks are more diligent...
Just FYI...
Richard:
Yes. The way I've done it in the past is to generate tilde (~) delimited flat files and then load the data into Oracle via SQL*Loader. You have to do a mapping first before using SQL*Loader. Then you have to write scripts for each table you are loading. I recommend the O'Reilly book Oracle SQL*Loader, The Definitive Guide. This is a process that can take time especially if the Oracle application needs data that the old legacy DB doesn't provide.
My $0.02 worth,
Ken Janusz, CPIM
Anyone know of an easy way to grab data from tables in an SQL Server DB and insert into tables in an Oracle DB?
Thanks.
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Author: Tim Gorman
INET: Tim_at_SageLogix.com
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