Based on the location of each program (Program Files (x86) vs.c:\Program Files), This suggests to me that the Toad, a 32 bit program, should use the 32 bit driver and db Forge should use the 64 bit driver.Depending on the situation, it might be easiest to reboot a Windows client rather than figuring out how to kill and restart any applications that might have the data cached.A change might benefit from a reboot for the sake of consistency though it is not required. NET 2 (184.108.40.206.0) f) Oracle Database Extensions for . Run Oracle Universal Installer (OUI) by launching the that was unzipped in the same directory. OUI will lead you through ODAC installation on your machine.
If you don't have TNS_ADMIN set as an environment variable then look for it in your Oracle root registry: HKEY_LOCAL_MACHINE\Software\Oracle.
If you use a common set of connections for all of your tools I'd delete all of your files.
I'd also relocate that C:\Windows\TNS folder to somewhere more appropriate like C:\Oracle\Admin and create your tnsnames.ora, sqlnet.ora, and (if applicable) there.
Ora Client11g_home1 (220.127.116.11) ORACLE_HOME: C:\app\C39293\product.2.0\client_1 ORACLE_HOME_NAME: Ora Client11g_home1 ORACLE_HOME_KEY: HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\KEY_Ora Client11g_home1 ORACLE_SID: NLS_LANG: AMERICAN_AMERICA.
WE8MSWIN1252 SQLPATH: LOCAL: Client DLL: C:\app\C39293\product.2.0\client_1\TNSNames.ora: SQLNet.ora: LDAP.ora: Login.sql: GLogin.sql: In system PATH: No Home is valid: No Ora Client11g_home1_32bit (18.104.22.168) ORACLE_HOME:c:\oracle\product203_32bit\CLIENT_1 ORACLE_HOME_NAME: Ora Client11g_home1_32bit ORACLE_HOME_KEY: HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\KEY_Ora Client11g_home1_32bit ORACLE_SID: NLS_LANG: AMERICAN_AMERICA.