Since Oracle and SQL Server are two completely different products, the only way to move data from one to the other...
is to use an intermediary step. One of the most vendor-neutral steps is to dump your data from SQL Server to comma-delimited text files, with each file representing one database table. You can then use Oracle's SQL*Loader utility to ingest the contents of these files into Oracle database tables. If you have many tables, this can be a cumbersome solution.
Another intermediary step is to move the data through an ODBC connection. Create an ODBC connection to an Oracle database using Oracle's ODBC drivers. Then have SQL Server's Data Transformation Services (DTS) move the data to the database defined by the ODBC DSN. Alternatively, you can set up Oracle's Heterogeneous Services (HS) to connect the Oracle database to SQL Server through ODBC and then access the SQL Server data through a database link.
Related Q&A from Brian Peasland
Oracle expert Brian Peasland answers one reader's question about common pitfalls when connecting Oracle to outside programs.continue reading
One reader asks expert Brian Peasland a question about datafile sizes with the Oracle RMAN duplicate 10g command.continue reading
Managing parent table-child table relations in Oracle SQL environments is key to efficient programming.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.