On Fri, 2024-02-23 at 18:21 +0800, James Pang wrote: > it's a third-party vendor application, not easy to change their code. Then the application is broken, and you should make the vendor fix it. > is it possible to 1) in Postgresql JDBC driver connection, set > plan_cache_mode=force_custom_plan or 2) some other parameters can workaround this issue? You can set "prepareThreshold" to 0 to keep the JDBC driver from using prepared statements in PostgreSQL. I am not sure if that is enough to fix the problem. Yours, Laurenz Albe