On Fri, May 2, 2025 at 1:25 PM Martin Mueller <
martinmuel...@northwestern.edu> wrote:

>
> table tid from new index tuple (32586,21) overlaps with invalid duplicate
> tuple at offset 120 of block 4398 in index "aacorrections_tcpreading_idx"
>

Read that as "your index is corrupted".


> I have no idea what is going on or how to deal with it and will be
> grateful for advice
>
>
>

You will need to rebuild the index.

If you've recently performed an OS upgrade you may also wish to update
most/all indexes to fix possible collations issues.

David J.

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