Re: Missing query plan for auto_explain.

Hi,

On Thu, Sep 01, 2022 at 08:20:13PM +0100, Matheus Martin wrote:
> We tried running the prepared statement six times as suggested but wasn't
> still able to recreate the original problem.
> 
> Perhaps more concerning/relevant is that we have not found any explanation
> to why the explain plan is not being logged by `auto_explain`. Could this
> be a bug? Shall we report it?

Just to be sure, do you get at least some plans logged by auto_explain when
queries are executed by the JDBC application?

Can you try to temporarily lower auto_explain.log_min_duration_statements to
less than 50ms and see what auto_explain sees for the execution time (and
planning time).

Another possibility would be some conflicting locks held.  If the conflict
happens during the planning auto_explain still won't be triggered as it's
outside the executor.  Also, have you enabled log_lock_waits?