Note
This parameter is available starting with V4.2.1.
Description
compaction_dag_cnt_limit specifies the maximum number of DAGs in the Compaction DAG queue.
Privilege requirements
Query the parameter
You can use the
SHOW PARAMETERSstatement or theGV$OB_PARAMETERSview to query this parameter for thesystenant and all user tenants.Modify the parameter
You can modify this parameter for the
systenant and user tenants.
Attributes
| Attribute | Description |
|---|---|
| Type | Int |
| Default value | 50000
NoteStarting from V4.4.0, the default value is changed from 15000 to 50000. |
| Value range | [10000, 500000]
NoteStarting from V4.4.0, the value range is changed from [10000, 200000] to [10000, 500000]. |
| 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 maximum number of DAGs in the Compaction DAG queue to 50000.
obclient> ALTER SYSTEM SET compaction_dag_cnt_limit = 50000;