Database Error Messages

Release
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  • 23ai
  • 21c
  • 19c
Updated
Jun 24, 2024

ORA-30751

cannot disable column string from storing objects of type string.string

Cause

The user is trying to drop a type from being stored in a substitutable column or table. This error is raised due to one of the following reasons :

  • the column is enabled to store instances of some subtype of the type being dropped.
  • the column is enabled to store instances of only one type

Action

Fix the cause of the error and retry the operation.