Oracle database can be used either as a metadata database or as a datasource in TIBCO Statistica and might encounter this error. This is a very common error mostly related to the local copy of the
tnsnames.ora file or listener configuration or the database name aliases.
Cause: A connection to a database or other service was requested using a connect identifier, and the connect identifier specified could not be resolved into a connect descriptor using one of the naming methods configured.
For example: If the type of connect identifier used was a net service name then the net service name could not be found in a naming method repository, or the repository could not be located or reached.