Purpose
The oceanbase.CDB_TABLES view provides information about tables in all tenants.
Note
This view is introduced since OceanBase Database V4.0.0.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| CON_ID | bigint(20) | NO | The ID of the tenant. |
| OWNER | varchar(128) | NO | The owner of the table. |
| TABLE_NAME | varchar(128) | NO | The name of the table. |
| TABLESPACE_NAME | varchar(30) | NO | The name of the tablespace containing the table. |
| CLUSTER_NAME | varchar(128) | NO | At present, this column is not supported and is NULL by default. |
| IOT_NAME | varchar(128) | NO | At present, this column is not supported and is NULL by default. |
| STATUS | varchar(8) | NO | The table status. Valid values: |
| PCT_FREE | bigint(20) | NO | The minimum percentage of free space in a block. |
| PCT_USED | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| INI_TRANS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| MAX_TRANS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| INITIAL_EXTENT | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| NEXT_EXTENT | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| MIN_EXTENTS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| MAX_EXTENTS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| PCT_INCREASE | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| FREELISTS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| FREELIST_GROUPS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| LOGGING | varchar(3) | NO | At present, this column is not supported and is NULL by default. |
| BACKED_UP | varchar(1) | NO | At present, this column is not supported and is NULL by default. |
| NUM_ROWS | BIGINT(21) | NO | The number of rows in the table. |
| BLOCKS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| EMPTY_BLOCKS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| AVG_SPACE | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| CHAIN_CNT | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| AVG_ROW_LEN | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| AVG_SPACE_FREELIST_BLOCKS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| NUM_FREELIST_BLOCKS | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| DEGREE | varchar(10) | NO | At present, this column is not supported and is NULL by default. |
| INSTANCES | varchar(10) | NO | At present, this column is not supported and is NULL by default. |
| CACHE | varchar(5) | NO | At present, this column is not supported and is NULL by default. |
| TABLE_LOCK | varchar(8) | NO | At present, this column is not supported and is NULL by default. |
| SAMPLE_SIZE | bigint(0) | NO | At present, this column is not supported and is NULL by default. |
| LAST_ANALYZED | date | NO | At present, this column is not supported and is NULL by default. |
| PARTITIONED | varchar(3) | NO | Indicates whether the table is partitioned. Valid values: |
| IOT_TYPE | varchar(12) | NO | At present, this column is not supported and is NULL by default. |
| TEMPORARY | varchar(1) | NO | Indicates whether the table is a temporary table. |
| SECONDARY | varchar(1) | NO | At present, this column is not supported and is NULL by default. |
| NESTED | varchar(3) | NO | Indicates whether the table is a nested table. Valid values: |
| BUFFER_POOL | varchar(7) | NO | At present, this column is not supported and is NULL by default. |
| FLASH_CACHE | varchar(7) | NO | At present, this column is not supported and is NULL by default. |
| CELL_FLASH_CACHE | varchar(7) | NO | At present, this column is not supported and is NULL by default. |
| ROW_MOVEMENT | varchar(8) | NO | At present, this column is not supported and is NULL by default. |
| GLOBAL_STATS | varchar(3) | NO | At present, this column is not supported and is NULL by default. |
| USER_STATS | varchar(3) | NO | At present, this column is not supported and is NULL by default. |
| DURATION | varchar(15) | NO | The duration of a temporary table. |
| SKIP_CORRUPT | varchar(8) | NO | At present, this column is not supported and is NULL by default. |
| MONITORING | varchar(3) | NO | At present, this column is not supported and is NULL by default. |
| CLUSTER_OWNER | varchar(128) | NO | At present, this column is not supported and is NULL by default. |
| DEPENDENCIES | varchar(8) | NO | At present, this column is not supported and is NULL by default. |
| COMPRESSION | varchar(8) | NO | At present, this column is not supported and is NULL by default. |
| COMPRESS_FOR | varchar(30) | NO | At present, this column is not supported and is NULL by default. |
| DROPPED | varchar(3) | NO | Indicates whether the table has been dropped and moved to the recycle bin. |
| READ_ONLY | varchar(3) | NO | At present, this column is not supported and is NULL by default. |
| SEGMENT_CREATED | varchar(3) | NO | At present, this column is not supported and is NULL by default. |
| RESULT_CACHE | varchar(7) | NO | At present, this column is not supported and is NULL by default. |
| CLUSTERING | varchar(3) | NO | Indicates whether the table has attribute clustering clauses. Valid values: |
| ACTIVITY_TRACKING | varchar(23) | NO | Indicates whether heatmap tracking is enabled on the table. |
| DML_TIMESTAMP | varchar(25) | NO | The time when the automatic data optimization policy was created or modified. |
| HAS_IDENTITY | varchar(3) | NO | Indicates whether the table has an identifier column. Valid values: |
| CONTAINER_DATA | varchar(3) | NO | Indicates whether the table contains container-specific data. Valid values: |
| INMEMORY | varchar(8) | NO | Indicates whether in-memory column store is enabled for the table. Valid values: |
| INMEMORY_PRIORITY | varchar(8) | NO | The padding priority of the in-memory column store. Valid values: |
| INMEMORY_DISTRIBUTE | varchar(15) | NO | The distribution of in-memory column store in a Real Application Clusters (RAC) environment. Valid values: |
| INMEMORY_COMPRESSION | varchar(17) | NO | The compression level for in-memory column store. Valid values: This value is based on the location of the middle section of the table. For example, if the table is partitioned and in-memory column store is enabled, the value for ALL_TABLES is NULL and the value for ALL_TAB_SUBPARTITIONS is not NULL. |
| INMEMORY_DUPLICATE | varchar(13) | NO | The duplicate settings for in-memory column store in the RAC environment. Valid values: |
| DEFAULT_COLLATION | varchar(100) | NO | The default sorting rule of the table. |
| DUPLICATED | varchar(1) | NO | Indicates whether the table is duplicated on this shard. Valid values: |
| SHARDED | varchar(1) | NO | Indicates whether the table is sharded. Valid values: |
| EXTERNALLY_SHARDED | varchar(1) | NO | Indicates whether the table involves an external shard. Valid values: |
| EXTERNALLY_DUPLICATED | varchar(1) | NO | Indicates whether the table involves an external duplicate. Valid values: |
| EXTERNAL | varchar(3) | NO | Indicates whether the table is an external table. Valid values: |
| HYBRID | varchar(3) | NO | Indicates whether the table is a hybrid partitioned table. Valid values: A hybrid partition table can contain both partitions stored in a segment and partitions stored externally. |
| CELLMEMORY | varchar(24) | NO | The column compression value in the flash cache of the storage unit. Valid values:ENABLED: Oracle Exadata Storage will automatically determine whether to cache data as a column.DISABLED: Oracle Exadata Storage is prevented from caching data as a column.NO CACHECOMPRESS: Oracle Exadata Storage will cache data in HCC format (where no re-compression is required).FOR QUERY: Oracle Exadata Storage will recompress and cache data in high INMEMORY query format.FOR CAPACITY: Exadata Storage will recompress and cache data in low INMEMORY capacity format. This column is mainly used with Exadata. |
| CONTAINERS_DEFAULT | varchar(3) | NO | Indicates whether CONTAINERS() is enabled for the table by default. Valid values: |
| CONTAINER_MAP | varchar(3) | NO | Indicates whether the table is enabled and used together with the database attribute container_map. Valid values: |
| EXTENDED_DATA_LINK | varchar(3) | NO | Indicates whether obtaining extended data links from the root is enabled for the table. Valid values: |
| EXTENDED_DATA_LINK_MAP | varchar(3) | NO | For internal use only. |
| INMEMORY_SERVICE | varchar(12) | NO | The way that in-memory column store is padded on various instances. Valid values:DEFAULTPARALLEL_INSTANCE_GROUP: Data is padded on all instances specified by the initialization parameter. This is the default value. If this parameter is not set, data is padded for all instances.NONE: Data is not padded for any instance.ALL: Data is padded for all instances regardless of the settings of the initialization parameter PARALLEL_INSTANCE_GROUP.USER_DEFINED: Data is padded only for instances where the user-defined service is active. The service name is saved in the INMEMORY_SERVICE_NAME column. |
| INMEMORY_SERVICE_NAME | varchar(1000) | NO | The name of the service on which in-memory column store is padded. This column has values only when INMEMORY_SERVICE is set to USER_DEFINED, and is empty in other cases. |
| CONTAINER_MAP_OBJECT | varchar(3) | NO | Indicates whether the table is used as the value of the database container_map property. Valid values: |
| MEMOPTIMIZE_READ | varchar(8) | NO | Indicates whether shortcut-based access is enabled for the table. Valid values: |
| MEMOPTIMIZE_WRITE | varchar(8) | NO | For internal use only. |
| HAS_SENSITIVE_COLUMN | varchar(3) | NO | Indicates whether the table has one or more sensitive columns. Valid values: |
| ADMIT_NULL | varchar(3) | NO | Indicates whether the table accepts empty CON_ID data. Valid values: |
| DATA_LINK_DML_ENABLED | varchar(3) | NO | Indicates whether DML is allowed on the data link table. Valid values: |
| LOGICAL_REPLICATION | varchar(8) | NO | Indicates whether logical replication is enabled for the table. Valid values: This value is ignored if the log entry of column data replenishment is enabled across the database. |
