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How to transfer data from Oracle to MS SQL Server

EXPERT RESPONSE FROM: Harish Harbham

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QUESTION POSED ON: 18 January 2008
What is the best way to transfer data from Oracle to MS SQL Server on a daily basis in an automated way? The transfer should be as batch process, as well as real time. The configurations are as below: Oracle 9i server on Linux 32 SQL Server 2005 on Windows XP

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The simplistic way for you to achieve this is to timestamp DML activity on SQL Server tables. On the Oracle side, keep a small control table tracking when you last refreshed a particular table, and then simply extract the relevant data using Oracle Hetrogeneous Services. You can poll SQL server as often as you like giving near real-time synchronization. There may be a more advanced way within SQL Server to call Oracle stored procedures.

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