Be warned that the forums are not support. If it is truly urgent you can contact them here:
https://support.inductiveautomation.com/
That said, you have not given any information on your Ignition / DB setup, how often you're trying to write to the DB, etc.
If it's related to this post:
You didn't give any information there, either.
If you expand the error in the log, there should be a 'Caused by' section. Post the entire error here
My gut tells me your AWS instances are underprovisioned for what you are trying to do.