Note
- OceanBase Database V4.x does not support configuration of thread resources by task type due to limited thread resources. This parameter has been deprecated since OceanBase Database V4.0.0.
- In OceanBase Database V4.x, you can use the
ha_high_thread_scoreparameter to specify the number of worker threads for high-availability high-priority tasks such as replication, rebuild, and restore tasks. For more information about the tenant-level parameterha_high_thread_score, see ha_high_thread_score.
data_copy_concurrency specifies the maximum number of concurrent data migration and replication tasks allowed in the system.
| Attribute | Description |
|---|---|
| Type | Integer |
| Default value | 20 |
| Value range | [1, +∞) |
| Effective upon OBServer node restart | No |