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Re: pg_dump crashes

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On Fri, May 22, 2020 at 5:07 PM Adrian Klaver <adrian.klaver@xxxxxxxxxxx> wrote:
On 5/22/20 7:48 AM, Nico De Ranter wrote:
> The original server was running 9.5.14
> The system I am currently testing on is  11.8
>
> 2 fields are marked as 'extended'.   However if I understand correctly
> the table isn't actually toasted:
>
>
>    oid  |    table_schema    |       table_name        | total_bytes  |
>    total    |   index    |   toast    |   table
> -------+--------------------+-------------------------+--------------+------------+------------+------------+------------
>   19601 | public             | file                    | 147648061440 |
> 138 GB     | 57 GB      | 8192 bytes | 80 GB

What query are you using to get above?

SELECT oid, table_schema, table_name,                                                                                        
    total_bytes,
    pg_size_pretty(total_bytes) AS total
    , pg_size_pretty(index_bytes) AS INDEX
    , pg_size_pretty(toast_bytes) AS toast
    , pg_size_pretty(table_bytes) AS TABLE
  FROM (
  SELECT *, total_bytes-index_bytes-COALESCE(toast_bytes,0) AS table_bytes FROM (
      SELECT c.oid,nspname AS table_schema, relname AS TABLE_NAME
              , c.reltuples AS row_estimate
              , pg_total_relation_size(c.oid) AS total_bytes
              , pg_indexes_size(c.oid) AS index_bytes
              , pg_total_relation_size(reltoastrelid) AS toast_bytes
          FROM pg_class c
          LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
          WHERE relkind = 'r'
  ) a
) a order by total_bytes desc;
 Stolen from stackoverflow :-)

Nico

--

Nico De Ranter

Operations Engineer

T. +32 16 38 72 10



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