Node.JS Azure MySQL { [Error: Cannot enqueue Query after fatal error.] code: 'PROTOCOL_ENQUEUE_AFTER_FATAL_ERROR', fatal: false }

Question

I have app which connects to free Azure MySQL service and make queries in a loop. I use single connection to make those queries (I am limited to 4 connections), and process takes usually ~5 seconds. When I run app locally, it works perfectly fine, but after deployment do azure I get

{ [Error: Cannot enqueue Query after fatal error.] code: 'PROTOCOL_ENQUEUE_AFTER_FATAL_ERROR', fatal: false }

In my logs. How can I prevent this, and why does it work correctly locally, but not on Azure?

Do you have 'express-sql-session' or 'express-mysql-session' in your proeject? Try to remove it and deploy to azure again. — Alex Chen-WX
– Alex Chen-WX, Commented Apr 13, 2016 at 2:19
Here is my code snippet, I do not use Express, it's plain node.js application: pastebin.com/j0wZqm7P — Jakub Pastuszuk
– Jakub Pastuszuk, Commented Apr 14, 2016 at 10:48

Community · Accepted Answer · 2017-05-23 12:22:37Z

0

There was an answered SO thread as the same issue as yours, you can refer to Node JS Mysql PROTOCOL ENQUEUE AFTER FATAL ERROR and try to solve the issue.

edited May 23, 2017 at 12:22

CommunityBot

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answered Apr 13, 2016 at 6:34

Peter Pan

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