Note
This view is available starting with V4.0.0.
Purpose
This view displays the metadata of a table group, including the partition information of the table group.
Note
Starting from V4.2.0, the partition attribute fields in this view will no longer have any meaning and will be uniformly displayed as NONE or NULL.
Columns
Column |
Type |
Nullable |
Description |
|---|---|---|---|
| TABLEGROUP_NAME | VARCHAR2(128) | NO | The name of the table group. |
| PARTITIONING_TYPE | VARCHAR2(13) | NO | The partition type of the primary partition of the table group. Valid values:
|
| SUBPARTITIONING_TYPE | VARCHAR2(13) | NO | The partition type of the subpartition of the table group. Valid values:
|
| PARTITION_COUNT | NUMBER | NO | This value is NULL. |
| DEF_SUBPARTITION_COUNT | NUMBER | NO | This value is NULL. |
| PARTITIONING_KEY_COUNT | NUMBER | NO | This value is NULL. |
| SUBPARTITIONING_KEY_COUNT | NUMBER | NO | This value is NULL. |
| SHARDING | VARCHAR2(20) | NO | The SHARDING attribute of the table group. Valid values:
NoteThis column is available starting with V4.2.0. |
Sample query
Create a table group named
tblgroup1.obclient [SYS]> CREATE TABLEGROUP tblgroup1 SHARDING = 'PARTITION';Query the SHARDING attribute of the table group
TBLGROUP1.obclient [SYS]> SELECT TABLEGROUP_NAME, SHARDING FROM SYS.DBA_OB_TABLEGROUPS WHERE tablegroup_name = 'TBLGROUP1';The query result is as follows:
+-----------------+-----------+ | TABLEGROUP_NAME | SHARDING | +-----------------+-----------+ | TBLGROUP1 | PARTITION | +-----------------+-----------+ 1 row in set
