| Oracle9i Database Reference Release 2 (9.2) Part Number A96536-02 | 
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ALL_UNUSED_COL_TABS describes all tables accessible to the current user that contain unused columns.
DBA_UNUSED_COL_TABS describes all tables in the database that contain unused columns.USER_UNUSED_COL_TABS describes all tables owned by the current user that contain unused columns. This view does not display the OWNER column. 
| Column | Datatype | NULL | Description | 
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 | The owner of the object | 
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 | The name of the table | 
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 | The number of unused columns |