Cause
An invalid type name is specified for the layer_gtype constraint.
An invalid type name is specified for the layer_gtype constraint.
See the Spatial documentation for of valid keywords that can be used in defining a layer_gtype constraint.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
https://community.oracle.com/message/3533366
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