IBM BPM, V8.0.1, All platforms > Troubleshooting and support > Troubleshooting installation and configuration
Problems testing a connection to a data source in a ND
In an ND environment, testing a connection to a data source can fail, with the error message UndefinedVariableException: Undefined Variable WAS_INSTALL_ROOT. However, this does not necessarily indicate that you will have run time errors.
The test connection service provided by WebSphere Application Server often
works only if the WAS_INSTALL_ROOT variable is set on cell scope, which is not the case in IBM BPM NDs. See 
Test connection service in the WebSphere Application Server information center.
If you attempt to test the data source connection, for example in the administrative console using Resources > JDBC > Data sources, and you get a message saying that the test connection operation failed with the exception com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined Variable WAS_INSTALL_ROOT, it does not necessarily indicate that there will be a problem accessing the data source at run time. Ensure that the location of your JDBC driver files is accessible to every client that must use the data source, and configure the variable with the full path of that location. Disregard the test connection error unless you are also experiencing trouble connecting to the data store at run time.
