Linux DSN Configuration
This section describes how to set up ODBC connectivity and configure DSNs on several Linux distributions: Debian-based systems, like Ubuntu, and Red Hat Linux platforms, like Red Hat Enterprise Linux (RHEL), CentOS, and Fedora.
Minimum Linux Versions
Here are the minimum supported versions for Red Hat-based and Debian-based systems:
OS | Min. Version |
Ubuntu | 11.04 |
Debian | 7 |
RHEL | 6.9 |
CentOS | 6.9 |
Fedora | 13 |
SUSE | 12.1 |
Installing the Driver Dependencies
Run the following commands as root or with sudo to install the necessary dependencies:
- Debian/Ubuntu:
apt-get install libc6 libstdc++6 zlib1g libgcc1
- RHEL/CentOS/Fedora:
yum install glibc libstdc++ zlib libgcc
Here are the corresponding libraries required by the driver:
Debian/Ubuntu Package | RHEL/CentOS/Fedora Package | File |
libc6 | glibc | linux-vdso.1 |
libc6 | glibc | libm.so.6 |
libc6 | glibc | librt.so.1 |
libc6 | glibc | libdl.so.2 |
libc6 | glibc | libpthread.so.0 |
libc6 | glibc | libc.so.6 |
libc6 | glibc | ld-linux-x86-64.so.2 |
libstdc++6 | libstdc++ | libstdc++.so.6 |
zlib1g | zlib | libz.so.1 |
libgcc1 | libgcc | libgcc_s.so.1 |
Installing the Driver
You can use standard package management systems to install the driver.
On Debian-based systems, like Ubuntu, run the following command with root or sudo:
dpkg -i /path/to/driver/setup/SAPGatewayODBCDriverforUnix.deb
On systems that support the RPM package format, run the following command with root or sudo:
rpm -ivh /path/to/driver/SAPGatewayODBCDriverforUnix.rpm
Licensing the Driver
Run the following commands to license the driver. To activate a trial, omit the <key> input.
cd /opt/cdata/cdata-odbc-driver-for-sapgateway/bin/
sudo ./install-license.sh <key>
Connecting through the Driver Manager
The driver manager loads the driver and passes function calls from the application to the driver. You need to register the driver with the driver manager and you define DSNs in the driver manager's configuration files.
The driver installation registers the driver with the unixODBC driver manager and creates a system DSN. The unixODBC driver manager can be used from Python and from many other applications. Your application may embed another driver manager.
Creating the DSN
See Using unixODBC to install unixODBC and configure DSNs. See Using the DataDirect Driver Manager to create a DSN to connect to OBIEE, Informatica, and SAS.
Connecting to SAP Gateway
Set the following connection properties to access SAP Gateway tables.
- Url: Set this to the URL of your environment, or to the full URL of the service. For example, the full url might appear as: https://sapes5.sapdevcenter.com/sap/opu/odata/IWBEP/GWSAMPLE_BASIC/. In this example, the environment url would just be: https://sapes5.sapdevcenter.com. Add any additional properties using the CustomUrlParams property.
- Namespace: Set the appropriate Service Namespace. In the example above, IWBEP is the namespace. It is optional if the full url to the service is specified.
- Service: Set this to the service you want to retrieve data from. In the example above, the service is GWSAMPLE_BASIC. It is not required if the full url is specified.
- CustomUrlParams: Set this to any required additional properties that need to be included with the HTTP request, for example sap-client=001&sap-language=EN.
Authenticating to SAP Gateway
SAP Gateway allows both basic and OAuth 2.0 authentication. You can use basic authentication to connect to your own account, or you can use OAuth to enable other users to retrieve data from your service with their accounts.
Basic
In basic authentication, you use your login credentials to connect. Set the following properties:
- AuthScheme: Set this to Basic.
- User: This is the username you use to log in to SAP Gateway.
- Password: This is the password you use to log in to SAP Gateway.
OAuth
You can connect without setting any connection properties for your user credentials.
When you connect, the driver opens the SAP Gateway OAuth endpoint in your default browser. Log in and grant permissions to the driver. The driver then completes the following OAuth process:
See Using OAuth Authentication for other OAuth authentication flows.
API Key
To connect using an ApiKey, set the APIKey property, and you are ready to connect.
In order to acquire an APIKey, open the Developer Portal and select the Product or Service for which you have published the API. Then, click on Subscribe > Create a new Application. After filling the necessary information and creating the application, the Application Key is going to be displayed. You can copy this value into the APIKey connection property.
You may set the AuthScheme to Token to enforce the Token based Authentication scheme.
Set the Driver Encoding
The ODBC drivers need to specify which encoding to use with the ODBC Driver Manager. By default, the CData ODBC Drivers for Unix are configured to use UTF-16 which is compatible with unixODBC, but other Driver Managers may require alternative encoding.
Alternatively, if you are using the ODBC driver from an application that uses the ANSI ODBC API it may be necessary to set the ANSI code page. For example, to import Japanese characters in an ANSI application, you can specify the code page in the config file '/opt/cdata/cdata-odbc-driver-for-sapgateway/lib/cdata.odbc.sapgateway.ini':
[Driver]
AnsiCodePage = 932