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0f7b58d
(Get the code!)
That warning is generated when trying to update the SYS_STATS table, but the corresponding row does not exist yet. SYS_STAT entries are created on ANALYZE TABLE, that's why it fixes the issue.
So the warnings are safe to ignore. But they should be removed anyway. They are basically supposed to indicate a "cache miss" event, there's no point to flood the error log with them.