| Oracle® Database Reference 11g Release 2 (11.2) Part Number E25513-03 | 
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 | PDF · Mobi · ePub | 
SYS_OBJECTS maps object IDs to object types and segment data block addresses.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| OBJECT_TYPE | VARCHAR2(15) | Type of the object | |
| OBJECT_TYPE_ID | NUMBER | Type ID of the object | |
| SEGMENT_TYPE_ID | NUMBER | Type of segment: TABLE, CLUSTER, INDEX, ROLLBACK, DEFERRED ROLLBACK, TEMPORARY, CACHE | |
| OBJECT_ID | NUMBER | Object identifier | |
| HEADER_FILE | NUMBER | ID of the file containing the segment header | |
| HEADER_BLOCK | NUMBER | ID of the block containing the segment header | |
| TS_NUMBER | NUMBER | The tablespace number |