ORA-22856: cannot add columns to object tables - Oracle Database 12c Error Messages

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In this video we are going to see how to fix below Oracle Database 12c Error Message.

ORA-22856: cannot add columns to object tables.
Cause: An attempt was made to add columns to an object table. Object tables cannot
be altered to add columns since its definition is based on an object type.
Action: Create a new type with additional attributes, and use the new type to create an
object table. The new object table will have the desired columns.

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