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?
