ALL_TABLES

ALL_TABLES describes the relational tables accessible to the current user. To gather statistics for this view, use the DBMS_STATS package.

Related Views

DBA_TABLES describes all relational tables in the database.
USER_TABLES describes the relational tables owned by the current user. This view does not display the OWNER column.

Note:

Columns marked with an asterisk (*) are populated only if you collect statistics on the table with the DBMS_STATS package.

Column	Datatype	NULL	Description
`OWNER`	`VARCHAR2(30)`	`NOT NULL`	Owner of the table
`TABLE_NAME`	`VARCHAR2(30)`	`NOT NULL`	Name of the table
`TABLESPACE_NAME`	`VARCHAR2(30)`		Name of the tablespace containing the table; NULL for partitioned, temporary, and index-organized tables
`CLUSTER_NAME`	`VARCHAR2(30)`		Name of the cluster, if any, to which the table belongs
`IOT_NAME`	`VARCHAR2(30)`		Name of the index-organized table, if any, to which the overflow or mapping table entry belongs. If the `IOT_TYPE` column is not NULL, then this column contains the base table name.
`STATUS`	`VARCHAR2(8)`		If a previous `DROP TABLE` operation failed, indicates whether the table is unusable (`UNUSABLE`) or valid (`VALID`)
`PCT_FREE`	`NUMBER`		Minimum percentage of free space in a block; NULL for partitioned tables
`PCT_USED`	`NUMBER`		Minimum percentage of used space in a block; NULL for partitioned tables
`INI_TRANS`	`NUMBER`		Initial number of transactions; NULL for partitioned tables
`MAX_TRANS`	`NUMBER`		Maximum number of transactions; NULL for partitioned tables
`INITIAL_EXTENT`	`NUMBER`		Size of the initial extent (in bytes); NULL for partitioned tables
`NEXT_EXTENT`	`NUMBER`		Size of secondary extents (in bytes); NULL for partitioned tables
`MIN_EXTENTS`	`NUMBER`		Minimum number of extents allowed in the segment; NULL for partitioned tables
`MAX_EXTENTS`	`NUMBER`		Maximum number of extents allowed in the segment; NULL for partitioned tables
`PCT_INCREASE`	`NUMBER`		Percentage increase in extent size; NULL for partitioned tables
`FREELISTS`	`NUMBER`		Number of process freelists allocated to the segment; NULL for partitioned tables
`FREELIST_GROUPS`	`NUMBER`		Number of freelist groups allocated to the segment; NULL for partitioned tables
`LOGGING`	`VARCHAR2(3)`		Indicates whether or not changes to the table are logged; NULL for partitioned tables: `YES` `NO`
`BACKED_UP`	`VARCHAR2(1)`		Indicates whether the table has been backed up since the last modification (`Y`) or not (`N`)
`NUM_ROWS*`	`NUMBER`		Number of rows in the table
`BLOCKS*`	`NUMBER`		Number of used data blocks in the table
`EMPTY_BLOCKS`	`NUMBER`		Number of empty (never used) data blocks in the table. This column is populated only if you collect statistics on the table using the `DBMS_STATS` package.
`AVG_SPACE*`	`NUMBER`		Average amount of free space, in bytes, in a data block allocated to the table
`CHAIN_CNT*`	`NUMBER`		Number of rows in the table that are chained from one data block to another, or which have migrated to a new block, requiring a link to preserve the old ROWID
`AVG_ROW_LEN*`	`NUMBER`		Average length of a row in the table (in bytes)
`AVG_SPACE_FREELIST _BLOCKS`	`NUMBER`		Average freespace of all blocks on a freelist
`NUM_FREELIST_BLOCKS`	`NUMBER`		Number of blocks on the freelist
`DEGREE`	`VARCHAR2(10)`		Number of threads per instance for scanning the table, or `DEFAULT`
`INSTANCES`	`VARCHAR2(10)`		Number of instances across which the table is to be scanned, or `DEFAULT`
`CACHE`	`VARCHAR2(5)`		Indicates whether the table is to be cached in the buffer cache (`Y`) or not (`N`)
`TABLE_LOCK`	`VARCHAR2(8)`		Indicates whether table locking is enabled (`ENABLED`) or disabled (`DISABLED`)
`SAMPLE_SIZE`	`NUMBER`		Sample size used in analyzing this table
`LAST_ANALYZED`	`DATE`		Date on which this table was most recently analyzed
`PARTITIONED`	`VARCHAR2(3)`		Indicates whether the table is partitioned (`YES`) or not (`NO`)
`IOT_TYPE`	`VARCHAR2(12)`		If the table is an index-organized table, then `IOT_TYPE` is `IOT`, `IOT_OVERFLOW`, or `IOT_MAPPING`. If the table is not an index-organized table, then `IOT_TYPE` is NULL.
`TEMPORARY`	`VARCHAR2(1)`		Indicates whether the table is temporary (`Y`) or not (`N`)
`SECONDARY`	`VARCHAR2(1)`		Indicates whether the table is a secondary object created by the `ODCIIndexCreate` method of the Oracle Data Cartridge (`Y`) or not (`N`)
`NESTED`	`VARCHAR2(3)`		Indicates whether the table is a nested table (`YES`) or not (`NO`)
`BUFFER_POOL`	`VARCHAR2(7)`		Buffer pool for the table; NULL for partitioned tables: `DEFAULT` `KEEP` `RECYCLE` NULL
`FLASH_CACHE`	`VARCHAR2(7)`		Database Smart Flash Cache hint to be used for table blocks: `DEFAULT` `KEEP` `NONE` Solaris and Oracle Linux functionality only.
`CELL_FLASH_CACHE`	`VARCHAR2(7)`		Cell flash cache hint to be used for table blocks: `DEFAULT` `KEEP` `NONE` See Also: Oracle Exadata Storage Server Software documentation for more information
`ROW_MOVEMENT`	`VARCHAR2(8)`		Indicates whether partitioned row movement is enabled (`ENABLED`) or disabled (`DISABLED`)
`GLOBAL_STATS`	`VARCHAR2(3)`		For partitioned tables, indicates whether statistics for the table as a whole (global statistics) are accurate (`YES`) or whether they were not collected and have to be estimated from statistics on underlying partitions and subpartitions (`NO`)
`USER_STATS`	`VARCHAR2(3)`		Indicates whether statistics were entered directly by the user (`YES`) or not (`NO`)
`DURATION`	`VARCHAR2(15)`		Indicates the duration of a temporary table: `SYS$SESSION` - Rows are preserved for the duration of the session `SYS$TRANSACTION` - Rows are deleted after `COMMIT` Null - Permanent table
`SKIP_CORRUPT`	`VARCHAR2(8)`		Indicates whether Oracle Database ignores blocks marked corrupt during table and index scans (`ENABLED`) or raises an error (`DISABLED`). To enable this feature, run the `DBMS_REPAIR`.`SKIP_CORRUPT_BLOCKS` procedure.
`MONITORING`	`VARCHAR2(3)`		Indicates whether the table has the `MONITORING` attribute set (`YES`) or not (`NO`)
`CLUSTER_OWNER`	`VARCHAR2(30)`		Owner of the cluster, if any, to which the table belongs
`DEPENDENCIES`	`VARCHAR2(8)`		Indicates whether row-level dependency tracking is enabled (`ENABLED`) or disabled (`DISABLED`)
`COMPRESSION`	`VARCHAR2(8)`		Indicates whether table compression is enabled (`ENABLED`) or not (`DISABLED`); NULL for partitioned tables
`COMPRESS_FOR`	`VARCHAR2(12)`		Default compression for what kind of operations: `BASIC` `OLTP` `QUERY LOW`^Foot 1 `QUERY HIGH`^Footref 1 `ARCHIVE LOW`^Footref 1 `ARCHIVE HIGH`^Footref 1 NULL
`DROPPED`	`VARCHAR2(3)`		Indicates whether the table has been dropped and is in the recycle bin (`YES`) or not (`NO`); NULL for partitioned tables
`READ_ONLY`	`VARCHAR2(3)`		Indicates whether the table IS READ-ONLY (`YES`) or not (`NO`)
`SEGMENT_CREATED`	`VARCHAR2(3)`		Indicates whether the table segment is created (`YES`) or not (`NO`)
`RESULT_CACHE`	`VARCHAR2(7)`		Result cache mode annotation for the table: `DEFAULT` - Table has not been annotated `FORCE` `MANUAL`

^Footnote 1Hybrid Columnar Compression is a feature of the Enterprise Edition of Oracle Database that is dependent on the underlying storage system. See Oracle Database Concepts for more information.