Cause
An Oracle Spatial function with a UNIT parameter was called on a geometry without a georeferenced SRID.
An Oracle Spatial function with a UNIT parameter was called on a geometry without a georeferenced SRID.
Make sure that spatial functions with UNIT parameters are only called on geometries with georeferenced SRIDs.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
https://community.oracle.com/message/865656
https://community.oracle.com/message/10161537
https://community.oracle.com/message/3229900
Browse all solutions to database errors from Oracle, MS SQL, or MySQL