Re: pgdump and restore results in different sizes DB

[Elvis Flesborg <elfle@xxxxxxx>]

I had luck with this query:

 

`select nspname, relname, reltuples from pg_class left join pg_namespace on pg_namespace.oid = pg_class.relnamespace;`

 

If you want, you can throw an `order by nspname, relname` in there, then it will be easier to compare the two clusters.

 

-Elvis

 

From: pgsql-admin-owner@xxxxxxxxxxxxxx [mailto:pgsql-admin-owner@xxxxxxxxxxxxxx] On Behalf Of Michaeldba@xxxxxxxxxxx
Sent: Monday, September 4, 2017 11:53 PM
To: Jean R. Franco <jfranco@xxxxxxxxx>
Cc: pgsql-admin@xxxxxxxxxxxxxx
Subject: Re: [ADMIN] pgdump and restore results in different sizes DB

 

Get approximate counts the shortcut way:

Do analyze on all your user tables. Then, do a join with pg_namespace, pg_table(s), and pg_class and spit out the scheme, table name, and number of rows(reltuples).

 

Not near a computer so forgot if it is pg_table or pg_table.

Sent from my iPad

On Sep 4, 2017, at 2:15 PM, Jean R. Franco <jfranco@xxxxxxxxx> wrote:

Thanks for replying,

That takes me to another question:
- Is there a way to do a count on all the tables at once?
I can check one by one but that will take me a long time (1596).

I checked the table sizes and they differ very much!

Thanks,

4 de Setembro de 2017 09:54, Michaeldba@xxxxxxxxxxx escreveu:

Do select counts from all your tables in old and new and see if they match.

Sent from my iPad

On Sep 4, 2017, at 8:36 AM, Jean R. Franco <jfranco@xxxxxxxxx> wrote:

Hi Michael,

Thanks for replying,

Do you think it would be that big of a size? Over 21G?

Thanks,

4 de Setembro de 2017 08:45, "Michael Vitale" <michaeldba@xxxxxxxxxxx> escreveu:

nice benefit of logical dump and restore: bye bye bloat

On September 4, 2017 at 7:35 AM "Jean R. Franco" <jfranco@xxxxxxxxx> wrote:

Hello Everyone,

I'm moving a postgresql server from one server to another, both running versions 9.4.10
It's a single large database and I'm using pgdump to export and restoring on the new server.

The thing is, on the old server the database size is 81GB, but when I restore on the new server, it decreases to 60GB

List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges | Size | Tablespace | Description
------------+----------+----------+---------+-------+-------------------+-------+------------+-------------
ecidade | postgres | LATIN1 | C | C | | 60 GB | pg_default |

I'm watching the whole process of restoring it and have no errors.
What could I been doing wrong?

Thanks,