https://www.ibm.com/docs/en/db2/12.1.x?topic=issues-troubleshooting-sql20305n-messages
Troubleshooting SQL20305N messages issued by INSERT or UPDATE statements
To determine the cause of SQL20305N error messages, refer to "Problem determination for SQL20305N and SQL20306N error messages" in the parent topic, then...
issued bytroubleshootingmessagesinsertupdate
https://jira.mariadb.org/browse/MDEV-29453
[MDEV-29453] blob data corrupted by INSERT INTO - Jira
data corruptedby insertmdevblobjira