Why can't I connect to Oracle database using ERwin DM? I can connect to the database using my other software.

Why can't I connect to Oracle database using ERwin DM?  I can connect to the database using my other software.

System Error

Unable to locate client connectivity software. Check with your Oracle database administrator to install the appropriate client software. 

OK

Solution:

 The problem is you need different connectivity software to connect to Oracle DBMS using ERwin than your Oracle tools.  

ERwin uses the TNS connection to Oracle.
If your copy of ERwin DM is 32-bit OS, please install the Oracle 32-bit client software.
If your copy of ERwin DM is 64-bit OS, please install the Oracle 64-bit client software. 
Also, see Article ID: 2192 How to troubleshoot an ERwin DM connection to an Oracle database.  That article demonstrates how to test the connection pathway for the ERwin DM Oracle connection using TNS.

More Information:

Please contact CA Technical Support at http://erwin.com/support