ORA-30746: error occured while trying to drop column string in table string
Cause: The user tried to drop a subtype with VALIDATE option which tried to check for stored instances of the type in the stated table
Action: Delete all instances of this subtype and then drop the type.
Cause: The user tried to drop a subtype with VALIDATE option which tried to check for stored instances of the type in the stated table
Action: Delete all instances of this subtype and then drop the type.
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