Confluence XML restore fails because the packet for query is too large
Problem
An XML backup fails to restore.
Diagnosis
The following appears in the atlassian-confluence.log
:
-- referer: http://localhost:8090/setup/setup-restore-start.action | url: /setup/setup-restore.action | userName: anonymous | action: setup-restore
com.atlassian.confluence.importexport.ImportExportException: Unable to complete import: Error while importing backup: could not insert: [com.atlassian.confluence.core.BodyContent#787560]
Caused by: com.mysql.jdbc.PacketTooBigException: Packet for query is too large (17825792 > 16777216 ). You can change this value on the server by setting the max_allowed_packet' variable.
Cause
The packet query size exceeds the maximum allowed size that is set in the database configuration, therefore XML restore process will fail.
Resolution
In order to resolve this, you will need to check the max_allowed_packet set within the MySQL server:
- Stop Confluence.
Ensure that the size max_allowed_packet parameter is set to 256MB per our Database Setup For MySQL guide:
max_allowed_packet =256M
Restart the Mysql service.
- Restart Confluence.
Last modified on Jun 1, 2021
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