[BUGS] duplicate key violates unique constraint pg_toast_635216540

[Paul Laughlin]

Hi,

For the last 6 months or so we've had an intermittent issue while doing a data import with a simple update statement.  The fix that we've found for this issue is to REINDEX TABLE <tablename>;


Has anyone seen this error before? 

Again, the error is: duplicate key violates unique constraint pg_toast_<>

Thanks,

Paul