This section describes how to modify parameters in the parameter template that you have created to meet your service requirements and achieve optimal performance.
Note that parameter values in default parameter templates cannot be changed.
Though parameter values in a default template cannot be changed, you can view details about a default parameter template. If a custom parameter template is set incorrectly, the database startup may fail. You can re-configure the custom parameter template according to the configurations of the default parameter template.
After you modify instance parameters, the modifications immediately take effect for the instance.