PLS-00580: supertype must be an object type



PLS-00580: supertype must be an object type..

Answer / guest

Cause: An attempt was made to declare an object type to have
a supertype, but the specified supertype was not itself an
object type. Object types can inherit only from other object
types.

Action: Remove the supertype specification, or change it to
refer to an object type. If the declaration appears correct,
make sure the supertype has compiled correctly.

Please add more information about this Error

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