ERROR: invalid memory alloc request size 1230291841

postgres=# \c demo
You are now connected to database "demo" as user "postgres".
demo=# SELECT nspname || '.' || relname AS "relation",
demo-#     pg_size_pretty(pg_total_relation_size(C.oid)) AS "total_size"
demo-#   FROM pg_class C
demo-#   LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)
demo-#   WHERE nspname NOT IN ('pg_catalog', 'information_schema')
demo-#     AND C.relkind <> 'i'
demo-#     AND nspname !~ '^pg_toast'
demo-#   ORDER BY pg_total_relation_size(C.oid) DESC
demo-#   LIMIT 20;
        relation        | total_size
------------------------+------------
 public._inforg24222    | 6462 MB
 public.config          | 165 MB
 public._inforg23805    | 34 MB
 public._inforg24502    | 23 MB
 public._inforg28528    | 23 MB
 public._accumrg28622   | 21 MB
 public._accumrg29176   | 18 MB
 public._crg1079        | 16 MB
 public._inforg31568    | 15 MB
 public._accumrg28976   | 14 MB
 public._inforg27395    | 13 MB
 public._accumrg29535   | 12 MB
 public._inforg31471    | 10 MB
 public._inforg31504    | 9992 kB
 public._accumrg29493   | 9616 kB
 public._accumrg29219   | 9144 kB
 public._accumrg29255   | 8176 kB
 public._accumrgtn29205 | 7632 kB
 public._accumrg29658   | 7344 kB
 public._inforg26344    | 6600 kB
(20 rows)

demo=# \q
postgres@test:/root$ exit
root@test:~# выход
user@test:~$  time sudo su postgres -c "pg_dump -Fc demo"  > ~/demo.dump
pg_dump: Ошибка выгрузки таблицы "_inforg24222": сбой в PQgetResult().
pg_dump: Сообщение об ошибке с сервера: ERROR:  invalid memory alloc request size 1230291841
pg_dump: Выполнялась команда: COPY public._inforg24222 (_fld24223_type, _fld24223_rtref, _fld24223_rrref, _fld24224, _fld864) TO stdout;

real    4m14,566s
user    3m47,729s
sys     0m4,269s


~$ sudo su postgres
[sudo] пароль для user:
postgres@test:/home/user$ psql
psql (10.10 (Ubuntu 10.10-4.1C))
Введите "help", чтобы получить справку.

postgres=# \c demo
Вы подключены к базе данных "demo" как пользователь "postgres".
demo=# DELETE FROM public._inforg24222;
DELETE 1657