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Error Message during XML Import

Confluence Server Version: 7.2.1

Operating System: Ubuntu 18.04.3

Database System PostgreSQL 10.12


Hey Guys,

Trying to migrate a Confluence Instance from MySQL to PostgreSQL using the xml dump. When i'm importing the xml dump, after about 10 minutes i receive the following error message:


com.atlassian.confluence.importexport.ImportExportException: Unable to complete import because the data does not match the constraints in the Confluence schema. Cause: PSQLException: ERROR: null value in column "username" violates not-null
Detail: Failing row contains (2719745, 0, 2, 2020-01-26 19:03:06, 2017-09-14 12:39:51, 2013-02-06 22:20:09, null).


Can somebody help?





1 answer

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Answer accepted


same Confluence version on both systems? If they are not the same, there will be no help/support.

Assuming they are the same:

The error message is pretty good: On the PostgreSQL side there is a constrain on a table not allowing the username column to be null. The data to be inserted contains a null value in the latest column.

This might be a bug / difference between MySQL & PSQL. It might be a bug in your database table. A solution is not that easy:

1. Ask Atlassian support

2. Try relaxing the constrain in PostgreSQL

3. Fix the null value in the exported data

#2 & #3 are a sort of last resort.



Of course both systems have the same Version of Confluence.

Can i find the table which produces the error?


How do i relax the constraint in PostgreSQL?

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