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From: vlsi (@vlsi) <[email protected]>
To: pgjdbc/pgjdbc <[email protected]>
Subject: Re: [pgjdbc/pgjdbc] issue #3724: Regression: FATAL:  simple query "BEGIN" arrived before ending an extended query message
Date: Wed, 09 Jul 2025 08:58:09 +0000
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

I'm sure the commit that altered the behaviour was https://github.com/pgjdbc/pgjdbc/pull/3655/files#diff-cfe87ac6bfaa171dc41659f7bd2368cf9fc6d6d6531fad...

Effectively, previously many queries were sent as `extended` even though at the driver side the query was like `send query with QUERY_EXECUTE_AS_SIMPLE flag`.
For instance, `connection.isValid()` was coded to use simple queries, and it was using extended in practice, thus it suffered from `prepared statement is not valid` kind of errors.

Good to know you are not using autosave though.

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