| Oracle® Database Reference 11g Release 1 (11.1) Part Number B28320-01  | 
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DBA_SUBPART_KEY_COLUMNS lists subpartitioning key columns for all composite-partitioned tables (and local indexes on composite-partitioned tables) in the database. Its columns are the same as those in ALL_SUBPART_KEY_COLUMNS.
See Also:
"ALL_SUBPART_KEY_COLUMNS"