On Fri, Aug 21, 2020 at 4:13 PM Thomas SIMON <tsimon@xxxxxxxxxxx> wrote: > > Hi Julien, > > thanks for answering me. > > The only extension I use is repmgr. Ok, this shouldn't be a problem. > I've tried to use gdb to see something (I don't know if i use it > correctly) , below the backtarce : > > [16:03:13]root@db13:/tmp$ gdb -q -c /tmp/core > /usr/lib/postgresql/12/bin/postgres > Reading symbols from /usr/lib/postgresql/12/bin/postgres...(no debugging > symbols found)...done. > [New LWP 177990] > > warning: Unexpected size of section `.reg-xstate/177990' in core file. > [Thread debugging using libthread_db enabled] > Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". > Core was generated by `postgres: 12/main: supervision neteven2 > localhost(34868) SELECT '. > Program terminated with signal SIGSEGV, Segmentation fault. > > warning: Unexpected size of section `.reg-xstate/177990' in core file. > #0 0x00005636d2d844f1 in equalTupleDescs () > (gdb) > (gdb) bt > #0 0x00005636d2d844f1 in equalTupleDescs () > #1 0x00005636d31a65cf in ?? () > #2 0x00005636d31b5fd3 in hash_search_with_hash_value () > #3 0x00005636d31a83b1 in assign_record_type_typmod () > #4 0x00005636d31b4855 in ?? () > #5 0x00005636d31b4b43 in get_expr_result_type () > #6 0x00005636d31b4b7b in get_expr_result_tupdesc () > #7 0x00005636d2e8bcce in get_rte_attribute_is_dropped () > #8 0x00005636d303fc7a in AcquireRewriteLocks () > #9 0x00005636d304039e in ?? () > #10 0x00005636d3043aa2 in QueryRewrite () > #11 0x00005636d307de90 in ?? () > #12 0x00005636d307df70 in pg_analyze_and_rewrite () > #13 0x00005636d307e68f in ?? () > #14 0x00005636d30804ad in PostgresMain () > #15 0x00005636d2d73f00 in ?? () > #16 0x00005636d3006f89 in PostmasterMain () > #17 0x00005636d2d75128 in main () > (gdb) cont > The program is not being run. Thanks! I don't see any obvious problem in that code, and that's something that didn't change for a long time so I'm starting to think this could be some hardware problem. Do you have any alarming messages in your system logs and/or dmesg?