Installation Guide Install and Configure the Oracle Application Tier Modify the tnsnames.ora File on the Application Server Modify the tnsnames.ora File on the Application Server Go to the following tnsnames.ora location on the application server: %ORACLE_HOME%\user_projects\domains\FRDomain\config\fmwconfig Make sure the tnsnames.ora file has an entry for each database that matches the database's service name. Copy the edited tnsnames.ora file from FRDomain_Home to %ORACLE_HOME%\network\admin (for example, to C:\Oracle\Middleware\Oracle_Home\network\admin). Parent topic: Install and Configure the Oracle Application Tier