Purpose
The DBA_TAB_PARTITIONS view displays the multi-level partitioning information, partition storage parameters, and partition statistics accessible to the current user.
Note
This view is introduced since OceanBase Database V2.2.77.
Related views
ALL_TAB_PARTITIONSUSER_TAB_PARTITIONS
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| TABLE_OWNER | VARCHAR2(128) | NO | The owner of the partitioned table. |
| TABLE_NAME | VARCHAR2(128) | NO | The name of the partitioned table. |
| COMPOSITE | VARCHAR2(3) | NO | Indicates whether the table is composite-partitioned. |
| PARTITION_NAME | VARCHAR2(128) | NO | The name of the partition. |
| SUBPARTITION_COUNT | NUMBER | NO | The number of subpartitions. |
| HIGH_VALUE | VARCHAR2(32767) | NO | The length of the subpartition expression. |
| HIGH_VALUE_LENGTH | NUMBER | NO | The position of the subpartition in the partition. |
| PARTITION_POSITION | NUMBER | NO | The position of the partition. |
| TABLESPACE_NAME | VARCHAR2(30) | NO | The name of the tablespace containing the partition. |
| PCT_FREE | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| PCT_USED | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| INI_TRANS | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| MAX_TRANS | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| INITIAL_EXTENT | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| NEXT_EXTENT | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| MIN_EXTENT | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| MAX_EXTENT | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| MAX_SIZE | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| PCT_INCREASE | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| FREELISTS | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| FREELIST_GROUPS | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| LOGGING | VARCHAR2(7) | NO | At present, this column is not supported and is NULL by default. |
| COMPRESSION | VARCHAR2(8) | NO | Indicates whether compression is enabled. |
| COMPRESS_FOR | VARCHAR2(30) | NO | The compression method. |
| NUM_ROWS | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| BLOCKS | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| EMPTY_BLOCKS | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| AVG_SPACE | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| CHAIN_CNT | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| AVG_ROW_LEN | NUMBER | NO | At present, this column is not supported and is NULL by default. |
| SAMPLE_SIZE | NUMBER | 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. |
| BUFFER_POOL | VARCHAR2(7) | NO | At present, this column is not supported and is NULL by default. |
| FLASH_CACHE | VARCHAR2(7) | NO | At present, this column is not supported and is NULL by default. |
| CELL_FLASH_CACHE | VARCHAR2(7) | NO | At present, this column is not supported and is NULL by default. |
| GLOBAL_STATS | VARCHAR2(3) | NO | At present, this column is not supported and is NULL by default. |
| USER_STATS | VARCHAR2(3) | NO | At present, this column is not supported and is NULL by default. |
| IS_NESTED | VARCHAR2(3) | NO | At present, this column is not supported and is NULL by default. |
| PARENT_TABLE_PARTITION | VARCHAR2(128) | NO | At present, this column is not supported and is NULL by default. |
| INTERVAL | VARCHAR2(3) | NO | At present, this column is not supported and is NULL by default. |
| SEGMENT_CREATED | VARCHAR2(4) | NO | At present, this column is not supported and is NULL by default. |
| INDEXING | VARCHAR2(4) | NO | The index attribute. Valid values:ON: The index of the subpartition is enabled.OFF: The index of the subpartition is disabled. |
| READ_ONLY | VARCHAR2(4) | NO | Indicates whether the subpartition is read-only. Valid values:YES: The subpartition is read-only.NO: The subpartition can be read and written. |
| INMEMORY | VARCHAR2(8) | NO | Indicates whether in-memory column store is enabled for the subpartition. Valid values:ENABLED: In-memory column store is enabled.DISABLED: In-memory column store is disabled. |
| INMEMORY_PRIORITY | VARCHAR2(8) | NO | The padding priority of the in-memory column store. Valid values: |
| INMEMORY_DISTRIBUTE | VARCHAR2(15) | NO | At present, this column is not supported and is NULL by default. |
| INMEMORY_COMPRESSION | VARCHAR2(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 | VARCHAR2(13) | NO | At present, this column is not supported and is NULL by default. |
| CELLMEMORY | VARCHAR2(24) | NO | At present, this column is not supported and is NULL by default. |
| INMEMORY_SERVICE | VARCHAR2(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 | VARCHAR2(100) | 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. |
| MEMOPTIMIZE_READ | VARCHAR2(8) | NO | Indicates whether shortcut-based access is enabled for the table. Valid values: |
| MEMOPTIMIZE_WRITE | VARCHAR2(8) | NO | For internal use only. |
