Oracle server connection

Hi All,
Please suggest me how to create a oracle connection without using oracle server connection.
I created like this.
Goto new connection->Expand ODBC(RDO)->gave the credentials.
But please suggest what is the use of below process found here
http://scn.sap.com/thread/2002507
Go to your Control Panel and open Administrative Tools -> Click on Data Source(ODBC).  On the User DSN tab, select a driver for which you want to set up a data source by clicking on the Add button.  Once done, the ODBC setup dialog box appears.  Provide your database login details and clik ok..Your ODBC connection is done.
Next open your Crystal Report application(a blank report)not sure which version you are using, in my case it is Crystal Report XI Release 2.  On the Database Expert, expand Create New Connection.  Expand ODBC(RDO) , it will take you to the Data Source Selection.  Select the datasoure name and click Next.  Here, you need to give the login credential for accessing the Database. Once done, you will find the data available on the Crystal Report.

Hi Abhilash,
Can you please explain below step.
Hello,
This is by design and a limit of how CR works due to limitation in your PC resources. CR loads all of that info into memory, if there are too many to list, and typically it's more common when using Oracle due to it's ability have thousands of tables, is in the Database connection right click on the connection and then select Options. You can add filtering to limit what you see.
Only option you have to be able to get to see all tables required for your report. Don't add tables if they are not required or if you can't link them. Work arounds are to create a collection of Stored Procedures or Views so you see just what you need.

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