Andrew Dunstan <and...@dunslane.net> writes: > That seems quite weird. I'm not sure how it's getting loaded at all if > not via shared_preload_libraries
Some other animals are showing this: diff -U3 /home/postgres/pgsql/src/test/modules/test_oat_hooks/expected/test_oat_hooks.out /home/postgres/pgsql/src/test/modules/test_oat_hooks/results/test_oat_hooks.out --- /home/postgres/pgsql/src/test/modules/test_oat_hooks/expected/test_oat_hooks.out 2022-03-22 11:57:40.224991011 -0400 +++ /home/postgres/pgsql/src/test/modules/test_oat_hooks/results/test_oat_hooks.out 2022-03-22 11:59:59.998983366 -0400 @@ -48,6 +48,8 @@ SELECT * FROM regress_test_table; NOTICE: in executor check perms: superuser attempting execute NOTICE: in executor check perms: superuser finished execute +NOTICE: in executor check perms: superuser attempting execute +NOTICE: in executor check perms: superuser finished execute t --- (0 rows) @@ -95,6 +97,8 @@ ^ NOTICE: in executor check perms: non-superuser attempting execute NOTICE: in executor check perms: non-superuser finished execute +NOTICE: in executor check perms: non-superuser attempting execute +NOTICE: in executor check perms: non-superuser finished execute t --- (0 rows) @@ -168,6 +172,8 @@ ^ NOTICE: in executor check perms: superuser attempting execute NOTICE: in executor check perms: superuser finished execute +NOTICE: in executor check perms: superuser attempting execute +NOTICE: in executor check perms: superuser finished execute t --- (0 rows) I can duplicate that by adding "force_parallel_mode = regress" to test_oat_hooks.conf, so a fair bet is that the duplication comes from executing the same hook in both leader and worker. regards, tom lane