Use the service.xml file to store service definition that store connection properties required for a database connection.
On UNIX systems, SAP recommends upgrading to version 2.3.0 or later of unixODBC. If you are using a version lower than 2.3.0, set a parameter for the driver that instructs the database manager not to synchronize database access. To do this, add a line that says “Threading = 0” for your driver in the odbcinst.ini file.
ln -s libodbc.so.2.0.0 libodbc.so.1
This link is required because ESP links to libodbc.so.1, which unixODBC 2.3.1 has renamed libodbc.so.2. With the link, ESP will now use libodbc.so.2.
<Property name="services-file">${ESP_HOME}/bin/service.xml</Property>