Hi,

This is a hypothetical problem but not an impossible situation. Just curious 
about what would happen.

Lets say you have an OLTP server that keeps very busy on a large database. In 
this large database you have one or more tables on super fast storage like a 
fusion IO card which is handling (for the sake of argument) 1 million 
transactions per second.

Even though only one or a few tables are using almost all of the IO, pg_dump 
has to export a consistent snapshot of all the tables to somewhere else every 
24 hours. But because it's such a large dataset (or perhaps just network 
congestion) the daily backup takes 2 hours.

Heres the question, during that 2 hours more than 4 billion transactions could 
of occurred - so what's going to happen to your backup and/or database?

- Elliot
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