You can modify the values and effective scopes of cluster or tenant parameters as needed.
Procedure
Log on to the OceanBase Cloud Platform (OCP) console.
The Cluster Overview page automatically appears.
In the Clusters list, find the target cluster and click its name.
In the left-side navigation pane of the page that appears, click Parameter Management .
(Optional) In the search box of the Parameters page, enter a parameter name to perform a fuzzy search.

Find the parameter to be modified and click Change Value in the Actions column.
In the dialog box that appears, modify the parameter value, effective scope, and effective object, and then click OK . The following figure shows how to modify a parameter whose effective scope is cluster.

The effective scope varies by parameter. Therefore, you must select the effective scope when you modify the parameter value.
When the effective scope is Cluster or a custom scope , the default effective scope is Cluster . To change the effective scope to Zone or OBServer, select Zone or OBServer from the Effective Scope drop-down list. Select effective objects. The modified value takes effect on the specified effective objects.
When the effective scope is Tenant , you can select a specific tenant or all tenants in the Effective Object drop-down list. The modified value takes effect on the specified effective objects.
If you want to specify different parameter values in different scopes, for example, you want the value of backup_concurrency to be 10 in Zone 1 , 12 in Zone 2 , and 20 on Server 1 , you can click Add Value to add three record rows, and then select the corresponding effective scope in each row.
Note
If multiple rows of values are displayed after you click Add Value , modify the parameter values from the top down. For each successful modification operation, a record is generated on the Change History tab.