REP-20146: This action may invalidate references to columns in the referenced object.

Cause: Collapsing a Database Ref, Database Nested Table, or Database Varray column invalidates any external use of the referenced columns. for example, in PL/SQl Program Units or in Summary Columns.

Action: To use the referenced columns, do not collapse the Database Ref, Database Nested Table, or Database Varray columns referencing them.

Level: 1

Impact: Other

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