# Connecting to Oracle with Kerberos authentication
<a name="oracle-kerberos-connecting"></a>

This section assumes that you have set up your Oracle client as described in [Step 8: Configure an Oracle client](oracle-kerberos-setting-up.md#oracle-kerberos.setting-up.configure-oracle-client). To connect to the Oracle DB with Kerberos authentication, log in using the Kerberos authentication type. For example, after launching Oracle SQL Developer, choose **Kerberos Authentication** as the authentication type, as shown in the following example. 

![\[Shows the New/Select Database Connection dialog box in Oracle SQL Developer. The Kerberos Authentication checkbox is selected.\]](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/images/ora-kerberos-auth.png)


To connect to Oracle with Kerberos authentication with SQL\$1Plus:

1. At a command prompt, run the following command:

   ```
   kinit username
   ```

   Replace *`username`* with the user name and, at the prompt, enter the password stored in the Microsoft Active Directory for the user.

1. Open SQL\$1Plus and connect using the DNS name and port number for the Oracle DB instance.

   For more information about connecting to an Oracle DB instance in SQL\$1Plus, see [Connecting to your DB instance using SQL\$1Plus](USER_ConnectToOracleInstance.SQLPlus.md).

**Tip**  
If you are using a native Windows cache, you can also set the `SQLNET.KERBEROS5_CC_NAME` parameter to `OSMSFT://` or `MSLSA` in the sqlnet.ora file to use the credentials stored in the Microsoft Active Directory.