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From: yafei wu <[email protected]>
To: [email protected]
To: [email protected]
Subject: Re: BUG #19419: Cannot create custom functions using python3u
Date: Fri, 27 Feb 2026 15:44:12 +0800
Message-ID: <CACMM9D7A3H9nJaVkGPD7dw-CR6kDpX+4K=z_RFLP+90LwxWP+w@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

The problem has been resolved. The issue was related to the environment.
The PostgreSQL user did not have sufficient permissions to access the
installation directory of Python.

PG Bug reporting form <[email protected]> 于2026年2月26日周四 23:55写道：

> The following bug has been logged on the website:
>
> Bug reference:      19419
> Logged by:          yafei wu
> Email address:      [email protected]
> PostgreSQL version: 18.2
> Operating system:   windows
> Description:
>
> When I was installing the Windows version of PostgreSQL 18.2.1, I executed
> the command "CREATE EXTENSION plpython3u;". Error message
> [2026-02-26 23:35:02] [58P01] Error: Unable to load library
> "D:/postgresql/PostgreSQL/18/lib/plpython3.dll": The specified module could
> not be found.
> [2026-02-26 23:35:02] At location: SQL statement "CREATE FUNCTION
> plpython3_call_handler() RETURNS language_handler" [2026-02-26 23:35:02]
> LANGUAGE c AS '$libdir/plpython3'"
> [2026-02-26 23:35:02] Extension script file "plpython3u--1.0.sql", near
> line
> 3
> When I placed the python313.dll file in the installation directory of
> Python
> 3.13 under the C:\Windows\System32 directory, and executed the command
> "CREATE EXTENSION plpython3u;" Success, but when creating the Python custom
> function, an error occurred.
> [2026-02-26 23:45:01] An I/O error occurred while sending to the backend.
> [2026-02-26 23:45:01] Received an irrecoverable error. The connection has
> been damaged.
>
>
>

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