DBA_TABLES
Description des tables (avec statistiques).
| Nom de la colonne | Description |
| EMPTY_BLOCKS | The number of empty (never used) data blocks in the table |
| AVG_SPACE | The average available free space in the table |
| CHAIN_CNT | The number of chained rows in the table |
| AVG_ROW_LEN | The average row length, including row overhead |
| DEGREE | The number of threads per instance for scanning the table |
| INSTANCES | The number of instances across which the table is to be scanned |
| CACHE | Whether the table is to be cached in the buffer cache |
| OWNER | Owner of the table |
| TABLE_NAME | Name of the table |
| TABLESPACE_NAME | Name of the tablespace containing the table |
| CLUSTER_NAME | Name of the cluster, if any, to which the table belongs |
| PCT_FREE | Minimum percentage of free space in a block |
| PCT_USED | Minimum percentage of used space in a block |
| INI_TRANS | Initial number of transactions |
| MAX_TRANS | Maximum number of transactions |
| INITIAL_EXTENT | Size of the initial extent in bytes |
| NEXT_EXTENT | Size of secondary extents in bytes |
| MIN_EXTENTS | Minimum number of extents allowed in the segment |
| MAX_EXTENTS | Maximum number of extents allowed in the segment |
| PCT_INCREASE | Percentage increase in extent size |
| FREELISTS | Number of process freelists allocated to this segment |
| FREELIST_GROUPS | Number of freelist groups allocated to this segment |
| BACKED_UP | Has table been backed up since last modification? |
| NUM_ROWS | The number of rows in the table |
| BLOCKS | The number of used data blocks in the table |