Note
This parameter is available starting with V1.4.
Description
server_balance_disk_tolerance_percent specifies the tolerance for disk load imbalance in the disk load balancing strategy. Only when the disk watermark of a node exceeds the average disk watermark of nodes in the same zone by the specified tolerance, will the node participate in disk-based unit balancing.
Privilege requirements
Query the parameter
The
systenant and all user tenants can use theSHOW PARAMETERSstatement or theGV$OB_PARAMETERSview to query this parameter.Modify the parameter
Only the
systenant can modify this parameter. User tenants cannot modify this parameter.
Attributes
| Attribute | Description |
|---|---|
| Parameter type | Int |
| Default value | 1 |
| Value range | [1, 100] |
| Modifiable | Yes. You can use the ALTER SYSTEM SET statement to modify the parameter. |
| Effective upon OBServer node restart | No. The setting takes effect immediately. |
Examples
Set the tolerance for disk load imbalance in the resource unit (Unit) balancing strategy to 1.
obclient> ALTER SYSTEM SET server_balance_disk_tolerance_percent = 1;