Matthias Apitz <guru@xxxxxxxxxxx> writes: > We're facing in our ESQL/C written application a situation where a > commit'ed INSERT into a table is rolled back. Kind of hard to believe ... is there any sign of distress in the postmaster log? > I have here the ESQL/C > logging of the problem: > ... > [1471] [12.05.2020 15:48:50:476]: ecpg_execute on line 1744: query: insert into swd_daten ( katkey , aktion , reserv , id , ansetzung , nettodaten ) values ( $1 , $2 , $3 , $4 , $5 , $6 ); with 6 parameter(s) on connection sisis > [1471] [12.05.2020 15:48:50:476]: ecpg_process_output on line 1744: OK: INSERT 0 1 > [1471] [12.05.2020 15:48:50:477]: ECPGtrans on line 6716: action "commit"; connection "sisis" > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ It's striking that this log shows a server ack of the INSERT, but no server ack of the COMMIT. Maybe that's just an oversight in the ESQL/C logging logic, but I wonder what's actually getting to the server. You might try enabling log_statement = all so you can get a trace of what the server thinks is happening. regards, tom lane