On 3/15/20 12:20 PM, Karsten Hilbert wrote:
On Sun, Mar 15, 2020 at 07:23:49PM +0100, Karsten Hilbert wrote:
We then tried to DELETE the offending row
delete from blobs.doc_obj where pk = 82224;
but that, again, shows the "unexpected chunk" problem.
According to
http://www.databasesoup.com/2013/10/de-corrupting-toast-tables.html
an UPDATE of the row is recommended -- should that work
better than a DELETE ?
I can't find documentation pointing to a fundamental
implementation difference that suggests so.
https://www.postgresql.org/docs/12/storage-toast.html#STORAGE-TOAST-ONDISK
"During an UPDATE operation, values of unchanged fields are normally
preserved as-is; so an UPDATE of a row with out-of-line values incurs no
TOAST costs if none of the out-of-line values change."
Karsten
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Adrian Klaver
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