Re: Fastest way to duplicate a quite large database

> On Apr 12, 2016, at 10:51 AM, Edson Richter <edsonrichter@hotmail.com> wrote:
>
> Same machine, same cluster - just different database name.
>
> Atenciosamente,
>
> Edson Carlos Ericksson Richter
>
> Em 12/04/2016 11:46, John R Pierce escreveu:
>> On 4/12/2016 7:25 AM, Edson Richter wrote:
>>>
>>> I have a database "Customer" with about 60Gb of data.
>>> I know I can backup and restore, but this seems too slow.
>>>
>>> Is there any other option to duplicate this database as "CustomerTest" as fast as possible (even fastar than
backup/restore)- better if in one operation (something like "copy database A to B")? 
>>> I would like to run this everyday, overnight, with minimal impact to prepare a test environment based on production
data. 
>>
>>
>> copy to the same machine, or copy to a different test server? different answers.
>>
>>
>>
>
>
>
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Not sure how fast is “fast” for your system. You could try:

create database customer_test with template customer;

I’m able to duplicate a 20GB in a couple minutes with the above command.

Couple caveats:

1. No active connections to customer are allowed during the create.
2. You’ll likely have to recreate the search_path and reissue connect grants to the newly created database.