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 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 |
|---|---|
| Type | Capacity |
| Default value | 0M, which indicates that the system automatically adapts to the value. 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';