V$INDEXED_FIXED_COLUMN displays the columns in dynamic performance tables that are indexed (X$ tables). The X$ tables can change without notice. Use this view only to write queries against fixed views (V$ views) more efficiently.
| Column | Datatype | Description | 
|---|---|---|
| TABLE_NAME | VARCHAR2(30) | Name of the dynamic performance table that is indexed | 
| INDEX_NUMBER | NUMBER | Number that distinguishes to which index a column belongs | 
| COLUMN_NAME | VARCHAR2(30) | Name of the column that is being indexed | 
| COLUMN_POSITION | NUMBER | Position of the column in the index key (this is mostly relevant for multicolumn indexes) |