ORA-30772: opaque types do not have default constructors

admin

ORA-30772: opaque types do not have default constructors
Cause: Constructorinvocation did not succeed, since no user-defined constructors
were defined for the opaque type, and since opaque types do not have default
constructors.
Action: Add user-definedconstructors to opaque type, or specify a member or
static method for the opaque type.