Re: Incremental Refresh - PostgreSQL 9.2

Are you using it for just select queries, or is this a full 100% test (insert/update/delete) test environment?

I have both. In my case they are geographically separate. Production server at data center. Replicated "just in case," also at data center. At HQ, I replicate that for DR purposes. INTERNALLY (gigabit backend), I have another internal test server that I refresh FROM THE REPLICATED SERVER AT HQ on a regular basis. I use the replicated server to query stuff (select) and dump databases to the interaction test server regularly for full testing.

-------- Original message --------
From: "David G. Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
Date: 02/23/2016 4:16 PM (GMT-06:00)
To: drum(dot)lucas(at)gmail(dot)com
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: [ADMIN] Incremental Refresh - PostgreSQL 9.2

On Tue, Feb 23, 2016 at 2:59 PM, drum(dot)lucas(at)gmail(dot)com<mailto:drum(dot)lucas(at)gmail(dot)com> <drum(dot)lucas(at)gmail(dot)com<mailto:drum(dot)lucas(at)gmail(dot)com>> wrote:
Hi all,

I've got a Master server and a Test Server.

Master server has a 1.7 TB
Test server has a full copy from master - 1.7 TB.

The copy was made using pg_dump

I.E: /usr/pgsql-9.2/bin/pg_dump --exclude-table-data='junk.*' --format=custom geoop_live > bigdump.sql

Question:
Now that the test server has a full copy from master, how could I just do a incremental refreshing once a month?

Instead copying all the DB (1.7GB), just copy what has been changed?
Is that possible?

?You cannot accomplish incremental updates if your choice of tool is pg_dump. The only way to do a true incremental would be to rely upon something like rsync on the data directory while the master server is offline.

So, assuming that is not an option, you should probably look at the various true replication solutions that are available and see which of those might serve as an alternative.

?David J.

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