This section describes how to edit the DSN configuration and then authenticate and connect to Oracle OCI APIs.

DSN Configuration

You can use the Microsoft ODBC Data Source Administrator to edit the DSN configuration. Note that the installation process creates a both a user DSN and a system DSN, as described in Installing the Connector.

Note: The connector stores connection information in the Windows registry. To ensure that the connector can write to the registry, either run Power BI as an administrator or use a User DSN for your connection instead of a System DSN.

User DSN

Complete the following steps to edit the DSN configuration:

1. Select Start > Search, and enter ODBC Data Sources in the Search box.
2. Choose the version of the ODBC Administrator that corresponds to the bitness of your Power BI Desktop installation (32-bit or 64-bit).
3. Select the system data source and click Configure.
4. Edit the information on the Connection tab and click OK.

System DSN

Configure the system DSN the same way as the user DSN, except you will need to switch to the System DSN tab before performing Step 3.

Connecting to Oracle OCI

Oracle OCI supports the following connection types:

• Oracle Server
• OracleTNS
• LDAP

Oracle Server

After you have added the appropriate libraries to your PATH (as described in Before You Connect), set these properties:

• User: The user Id provided for authentication with the Oracle database.
• Password: The password provided for authentication with the Oracle database.
• Port: The port used to connect to the server hosting the Oracle database.
• ServiceName: The service name of the Oracle database. You can obtain this value by querying global_name (select * from global_name) using the Oracle SQL*PLUS command line.
• Server: The host name or IP address of the server hosting the Oracle database.

OracleTNS

To authenticate via OracleTNS, set these properties:

• User: The user Id provided for authentication with the Oracle database.
• Password: The password provided for authentication with the Oracle database.
• DataSource: The Oracle Net Services Name, Connect Descriptor (known also as TNS Connect String), or a connection name that identifies the database to which to connect. You should be able to find these values in your tnsnames.ora file.

For example,

DataSource='(DESCRIPTION=(ADDRESS=(protocol_address_information))(CONNECT_DATA= (SERVICE_NAME=service_name)))'

LDAP

To authenticate via the LDAP server, set these properties:

• User: The user Id provided for authentication with the Oracle database.
• Password: The password provided for authentication with the Oracle database.
• LDAPUri: The LDAP URI used to connect to the LDAP server.
• LDAPUser: The User account for LDAP server.
• LDAPPassword: The password for the LDAP user.

Your connection string should look similar to this:

LDAPUri=ldap://myldap.com:389/SERVICE_EXMPL,cn=OracleContext,dc=example,dc=com; User=ORACLEUSER; Password=OracleUserPassword;

Note that this connection type requires both your Oracle and LDAP usernames and passwords. If your system administrator allows anonymous LDAP logins, your LDAP username and password are not needed.