Indicates that the DB instance should be associated with the specified option group. Changing this parameter does not result in an outage
except in the following case and the change is applied during the next maintenance window unless the ApplyImmediately parameter is
set to true for this request. If the parameter change results in an option group that enables OEM, this change can cause a brief
(sub-second) period during which new connections are rejected but existing connections are not interrupted. Permanent options, such as the TDE option for Oracle Advanced Security TDE, cannot be removed from an option
group, and that option group cannot be removed from a DB instance once it is associated with a DB instance

C# |
public string OptionGroupName { get; set; }