DBA_LMT_FREE_SPACE describes the free extents in all locally managed tablespaces in the database.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| TABLESPACE_ID | NUMBER | Identifier number of the tablespace containing the extent | |
| FILE_ID | NUMBER | File identifier number of the file containing the extent | |
| BLOCK_ID | NUMBER | Starting block number of the extent | |
| BLOCKS | NUMBER | Size of the extent (in Oracle blocks) |