Re: libpq CREATE DATABASE operation from multiple treads

From: Rob Sargent <robjsargent(at)gmail(dot)com>
To: p(dot)sun(dot)fun(at)gmail(dot)com
Cc: "pgsql-sql(at)lists(dot)postgresql(dot)org" <pgsql-sql(at)lists(dot)postgresql(dot)org>
Subject: Re: libpq CREATE DATABASE operation from multiple treads
Date: 2020-10-08 20:50:31
Message-ID: 23F4DE61-F81D-4740-A227-74B5EB41304C@gmail.com
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> On Oct 8, 2020, at 2:46 PM, p(dot)sun(dot)fun(at)gmail(dot)com wrote:
>
> On Thu, 2020-10-08 at 14:43 -0600, Rob Sargent wrote:
>>
>>
>>> On Oct 8, 2020, at 2:41 PM, p(dot)sun(dot)fun(at)gmail(dot)com wrote:
>>>
>>> On Thu, 2020-10-08 at 14:35 -0600, Rob Sargent wrote:
>>>>> On Oct 8, 2020, at 2:30 PM, p(dot)sun(dot)fun(at)gmail(dot)com wrote:
>>>>>
>>>>> Indeed, this is a FATAL_ERROR. From two threads I got:
>>>>>
>>>>> // Thread #1
>>>>> FATAL_ERROR: ERROR: source database "template1" is being
>>>>> accessed
>>>>> by
>>>>> other users
>>>>> DETAIL: There is 1 other session using the database.
>>>>>
>>>>> // Thread #2
>>>>> FATAL_ERROR: ERROR: source database "template1" is being
>>>>> accessed
>>>>> by
>>>>> other users
>>>>> DETAIL: There is 1 other session using the database.
>>>>>
>>>> I would try using dbname=postgres.
>>> aaaaand.... it works. Two databases have been created with return
>>> status "COMMAND_OK".
>>>
>>>> If you get the same error, I would say your server is in single
>>>> user
>>>> mode?
>>
>> And if you try it again using template1?
>>
>
> Nope, the same errors:
> // Thread #1
> FATAL_ERROR: ERROR: source database "template1" is being accessed by
> other users
> DETAIL: There is 1 other session using the database.
>
> // Thread #2
> FATAL_ERROR: ERROR: source database "template1" is being accessed by
> other users
> DETAIL: There is 1 other session using the database.
>
>
>
OK, well that’s a special db. Didn’t know it was that special, though!

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