DSN migration is done automatically during the installation of ODBC Driver for Teradata. See Teradata Tools and Utilities Installation Guide for Microsoft Windows for instructions.
DSN migration can also be done manually.
1 From a DOS command window, change to the tdodbcdsn.vbs directory. See the ODBC Driver for Teradata User Guide“Windows ODBC Driver Directories” on page 33.
2 Enter the following commands to change all Teradata DSNs to the presently installed versions:
cscript tdodbcdsn.vbs 32bitcscript tdodbcdsn.vbs 64bit