how to improve the performance ! i cant do the save from the server action
For one, this is just a warning. If it's fast enough anyway, you can just hide the warning (select it in the True Change tab and press Ctrl-H or use the context menu) and be done with it.
If you really want to fix the warning, then create a new server action that calls the two server actions (SubmitEquipmentDBDetails and CreateOrUpdateE2OpenEquipmentDB), and call that server action inside the client action.