Note
This parameter is available starting with V1.4.
Description
memory_chunk_cache_size specifies the capacity of memory blocks cached by the memory allocator.
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 | 0M, which indicates that the system automatically adapts. The default unit is MB. You must specify the unit when you configure this parameter. |
| Value range | [0M, +∞) |
| 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 capacity of memory blocks cached by the memory allocator to OM.
obclient> ALTER SYSTEM SET memory_chunk_cache_size = '0M';