dbParameterGroupName
The name of the DB parameter group to apply to the DB instance.
Changing this setting doesn't result in an outage. The parameter group name itself is changed immediately, but the actual parameter changes are not applied until you reboot the instance without failover. In this case, the DB instance isn't rebooted automatically, and the parameter changes aren't applied during the next maintenance window. However, if you modify dynamic parameters in the newly associated DB parameter group, these changes are applied immediately without a reboot.
This setting doesn't apply to RDS Custom DB instances.
Default: Uses existing setting
Constraints:
Must be in the same DB parameter group family as the DB instance.