Adam Witney <awitney@xxxxxxxxxx> writes: > pg_dump: ERROR: unexpected chunk number 5153 (expected 21) for toast value > 245334402 > measured_bioassay_base is always inserted at the same time as mba_data_base > (the table where I had the problem before) and it has a text field which is > very large.. How large is "very large" ... on the order of 10Mb? If so I'd say this is the same problem as we saw in your table --- a lot of consecutive rows have gone missing. You could examine the toast table to confirm or deny this. regards, tom lane