Note
This parameter is available starting with V1.4.
Description
virtual_table_location_cache_expire_time specifies the cache expiration time of the location information of a virtual table.
Privilege requirements
Query the parameter
You can execute the
SHOW PARAMETERSstatement or query theGV$OB_PARAMETERSview to obtain the value of this parameter in thesystenant and all user tenants.Modify the parameter
Only the
systenant can modify this parameter. User tenants cannot modify this parameter.
Attributes
| Attribute | Description |
|---|---|
| Type | Time |
| Default value | 8s |
| Value range | [1s, +∞) |
| 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 cache expiration time of the location information of a virtual table to 8s.
obclient> ALTER SYSTEM SET virtual_table_location_cache_expire_time ='8s';