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Google Cloud SQL “HTTP Error 409” – How to troubleshoot

by | Jul 6, 2021

Wondering how to troubleshoot Google Cloud SQL HTTP Error 409? We can help you.

Here at Bobcares, we often handle requests from our customers to fix similar errors as a part of our Server Management Services.

Today we will see how our Support Engineers troubleshoot this error for our customers.

How to troubleshoot Google Cloud SQL HTTP Error 409

Before going to the steps for troubleshooting this error we will see how the error looks like and what causes the error.

Error Message may look like either of the ones given below:

Error 409 Operation failed because another operation was already in progress.


HTTP Error 409 in a Terraform script
Cause for the issue:

1. The Terraform script must wait for each operation to complete before beginning the next one.

2. HTTP Error 409: Operation failed because another operation was already in progress.

3. When trying to re-use the same name for a new instance as a recently deleted one before the end of the waiting period for name re-use.

4. This error can also happen if synchronization issues of operations between the instance and the Cloud SQL service.

Steps to troubleshoot:

1. While running a Terraform script, we must halt execution until each instance operation is completed.

We can have the script poll and wait until a 200 is returned for the previous operation ID. Else, we have to wait for the currently running operation to complete.

2. After deleting an instance, we must wait a week before we can re-use the same name for a new instance.

3. If it is an issue with synchronization, the operation in progress would have been canceled. As a result, we will be able now to delete the instance without any obstacle.

[Need assistance? We can help you]


To conclude, we saw the steps that our Support Techs follow to troubleshoot Error 409 for our customers.


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