Unable to Switch DB connection in App engine at runtime

[shubhankartarka]

I am building a multi-tenant application where I want to keep a separate database for every tenant. For deployment, I am using Google
App Engine and for Database I am using Google Cloud Sql. While Deploying for code to App Engine I am setting DB as CommanDB which is a shared DB
and based on user login I am switching DB to tenantDB. When connected to CommanDB everything works fine but when I switch to tenanttaDB
I get a Connection timeout error.

[Marramirez]

Hello @shubhankartarka!

Welcome to the Google Cloud Community!

I noticed that you have asked the same question in Stack overflow. I would like to confirm if the comment helped you with your problem.

Let me know, thanks!