Note
This parameter is available starting with V1.4.
Description
memory_reserved specifies the size of the memory reserved for the system's underlying modules.
Privilege requirements
Query the parameter
The
systenant and all user tenants can query this parameter by using theSHOW PARAMETERSstatement or theGV$OB_PARAMETERSview.Modify the parameter
Only the
systenant can modify this parameter. User tenants cannot modify this parameter.
Attributes
| Attribute | Description |
|---|---|
| Type | Capacity |
| Default value | 500M. The default unit is MB. You must specify the unit when you configure this parameter. |
| Value range | [10M, +∞) |
| 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. |
Considerations
To ensure the normal operation of the basic modules, we recommend that you reserve sufficient memory_reserved as the guaranteed memory.
Examples
Set the size of the memory reserved for the system's underlying modules to 500M.
obclient> ALTER SYSTEM SET memory_reserved = '500M';