Artem Tomyuk <admin@leboutique.com> writes:
> After server crash i am getting the error ERROR: XX000: cache lookup
> failed for index 2399344195
> Is there a way to get name of this index by 2399344195???
contrib/oid2name might help you, or read
https://www.postgresql.org/docs/current/static/storage-file-layout.html
regards, tom lane