diff --git a/src/PostgREST/Config.hs b/src/PostgREST/Config.hs
index 6d2a856859..6471c471f6 100644
--- a/src/PostgREST/Config.hs
+++ b/src/PostgREST/Config.hs
@@ -58,7 +58,6 @@ import Development.GitRev      (gitHash)
 import Numeric                 (readOct, showOct)
 import Paths_postgrest         (version)
 import System.Environment      (getEnvironment)
-import System.IO.Error         (IOError)
 import System.Posix.Types      (FileMode)
 
 import Control.Applicative
@@ -334,14 +333,12 @@ readAppConfig :: [(Text, Text)] -> Environment -> Maybe FilePath -> IO (Either T
 readAppConfig dbSettings env optPath = do
   -- Now read the actual config file
   conf <- case optPath of
-    Just cfgPath -> C.load cfgPath `catches`
-      [ Handler (\(ex :: IOError)    -> panic $ "Cannot open config file: " <> show ex)
-      , Handler (\(C.ParseError err) -> panic $ "Error parsing config file: " <> err)
-      ]
+    -- Both C.ParseError and IOError are shown here
+    Just cfgPath -> mapLeft show <$> (try $ C.load cfgPath :: IO (Either SomeException C.Config))
     -- if no filename provided, start with an empty map to read config from environment
-    Nothing -> return M.empty
+    Nothing -> return $ Right M.empty
 
-  pure $ mapLeft ("Error in config: " <>) $ C.runParser parseConfig conf
+  pure $ mapLeft ("Error in config: " <>) $ C.runParser parseConfig =<< conf
 
   where
     parseConfig =
diff --git a/src/PostgREST/Statements.hs b/src/PostgREST/Statements.hs
index 0cb5a60465..c8e38554ce 100644
--- a/src/PostgREST/Statements.hs
+++ b/src/PostgREST/Statements.hs
@@ -202,7 +202,7 @@ dbSettingsStatement = H.Statement sql HE.noParams decodeSettings False
     sql = [q|
       with
       role_setting as (
-        select unnest(setconfig) as setting from pg_catalog.pg_db_role_setting where setrole = 'postgrest_test_authenticator'::regrole::oid
+        select unnest(setconfig) as setting from pg_catalog.pg_db_role_setting where setrole = current_user::regrole::oid
       ),
       kv_settings as (
         select split_part(setting, '=', 1) as key, split_part(setting, '=', 2) as value from role_setting
diff --git a/test/fixtures/roles.sql b/test/fixtures/roles.sql
index 286065b7a5..64f6f61601 100644
--- a/test/fixtures/roles.sql
+++ b/test/fixtures/roles.sql
@@ -34,3 +34,19 @@ ALTER ROLE postgrest_test_authenticator SET pgrst."db-channel" = 'ignored';
 ALTER ROLE postgrest_test_authenticator SET pgrst."db-pool" = 'ignored';
 ALTER ROLE postgrest_test_authenticator SET pgrst."db-pool-timeout" = 'ignored';
 ALTER ROLE postgrest_test_authenticator SET pgrst."db-load-guc-config" = 'ignored';
+
+-- other authenticator reloadable config options for io tests
+CREATE ROLE other_authenticator LOGIN NOINHERIT;
+ALTER ROLE other_authenticator SET pgrst."jwt-aud" = 'https://otherexample.org';
+ALTER ROLE other_authenticator SET pgrst."openapi-server-proxy-uri" = 'https://otherexample.org/api';
+ALTER ROLE other_authenticator SET pgrst."raw-media-types" = 'application/vnd.pgrst.other-db-config';
+ALTER ROLE other_authenticator SET pgrst."jwt-secret" = 'ODERREALLYREALLYREALLYREALLYVERYSAFE';
+ALTER ROLE other_authenticator SET pgrst."jwt-secret-is-base64" = 'true';
+ALTER ROLE other_authenticator SET pgrst."jwt-role-claim-key" = '."other"."role"';
+ALTER ROLE other_authenticator SET pgrst."db-tx-end" = 'rollback-allow-override';
+ALTER ROLE other_authenticator SET pgrst."db-schemas" = 'test, other_tenant1, other_tenant2';
+ALTER ROLE other_authenticator SET pgrst."db-root-spec" = 'other_root';
+ALTER ROLE other_authenticator SET pgrst."db-prepared-statements" = 'false';
+ALTER ROLE other_authenticator SET pgrst."db-pre-request" = 'test.other_custom_headers';
+ALTER ROLE other_authenticator SET pgrst."db-max-rows" = '100';
+ALTER ROLE other_authenticator SET pgrst."db-extra-search-path" = 'public, extensions, other';
diff --git a/test/io-tests/configs/expected/no-defaults-with-db-other-authenticator.config b/test/io-tests/configs/expected/no-defaults-with-db-other-authenticator.config
new file mode 100644
index 0000000000..604c33d6ff
--- /dev/null
+++ b/test/io-tests/configs/expected/no-defaults-with-db-other-authenticator.config
@@ -0,0 +1,27 @@
+db-anon-role = "postgrest_test_anonymous"
+db-channel = "postgrest"
+db-channel-enabled = true
+db-extra-search-path = "public,extensions,other"
+db-max-rows = 100
+db-pool = 1
+db-pool-timeout = 100
+db-pre-request = "test.other_custom_headers"
+db-prepared-statements = false
+db-root-spec = "other_root"
+db-schemas = "test,other_tenant1,other_tenant2"
+db-load-guc-config = "true"
+db-tx-end = "rollback-allow-override"
+db-uri = "<REPLACED_WITH_DB_URI>"
+jwt-aud = "https://otherexample.org"
+jwt-role-claim-key = ".\"other\".\"role\""
+jwt-secret = "ODERREALLYREALLYREALLYREALLYVERYSAFE"
+jwt-secret-is-base64 = true
+log-level = "info"
+openapi-server-proxy-uri = "https://otherexample.org/api"
+raw-media-types = "application/vnd.pgrst.other-db-config"
+server-host = "0.0.0.0"
+server-port = 80
+server-unix-socket = "/tmp/pgrst_io_test.sock"
+server-unix-socket-mode = "777"
+app.settings.test = "test"
+app.settings.test2 = "test"
diff --git a/test/io-tests/test_io.py b/test/io-tests/test_io.py
index 03c32da21d..ac66a22cfc 100644
--- a/test/io-tests/test_io.py
+++ b/test/io-tests/test_io.py
@@ -154,7 +154,9 @@ def run(configpath=None, stdin=None, env=None, port=None):
         if configpath:
             command.append(configpath)
 
-        process = subprocess.Popen(command, stdin=subprocess.PIPE, stderr=subprocess.PIPE, env=env)
+        process = subprocess.Popen(
+            command, stdin=subprocess.PIPE, stderr=subprocess.PIPE, env=env
+        )
 
         try:
             process.stdin.write(stdin or b"")
@@ -267,23 +269,34 @@ def test_expected_config_from_environment():
     assert dumpconfig(env=env) == expected
 
 
-def test_expected_config_from_db_settings(defaultenv):
+@pytest.mark.parametrize(
+    "role, expectedconfig",
+    [
+        ("postgrest_test_authenticator", "no-defaults-with-db.config"),
+        ("other_authenticator", "no-defaults-with-db-other-authenticator.config"),
+    ],
+)
+def test_expected_config_from_db_settings(defaultenv, role, expectedconfig):
     "Config should be overriden from database settings"
 
     config = CONFIGSDIR / "no-defaults.config"
+
+    db_uri = defaultenv["PGRST_DB_URI"].replace(
+        "user=postgrest_test_authenticator", f"user={role}"
+    )
     env = {
         **defaultenv,
+        "PGRST_DB_URI": db_uri,
         "PGRST_DB_LOAD_GUC_CONFIG": "true",
     }
     expected = (
-        (CONFIGSDIR / "expected" / "no-defaults-with-db.config")
+        (CONFIGSDIR / "expected" / expectedconfig)
         .read_text()
         .replace("<REPLACED_WITH_DB_URI>", env["PGRST_DB_URI"])
     )
 
     assert dumpconfig(configpath=config, env=env) == expected
 
-
 @pytest.mark.parametrize(
     "config",
     [conf for conf in CONFIGSDIR.iterdir() if conf.suffix == ".config"],
@@ -591,7 +604,7 @@ def test_max_rows_notify_reload(defaultenv):
         # reset max-rows config on the db
         postgrest.session.post("/rpc/reset_max_rows_config")
 
-def invalid_role_claim_key_notify_reload(defaultenv):
+def test_invalid_role_claim_key_notify_reload(defaultenv):
     "NOTIFY reload config should show an error if role-claim-key is invalid"
 
     env = {
@@ -603,6 +616,8 @@ def invalid_role_claim_key_notify_reload(defaultenv):
     with run(env=env) as postgrest:
         postgrest.session.post("/rpc/invalid_role_claim_key_reload")
 
-        assert "failed to parse role-claim-key value" in str(postgrest.process.stderr.readline())
+        assert "failed to parse role-claim-key value" in str(
+            postgrest.process.stderr.readline()
+        )
 
         postgrest.session.post("/rpc/reset_invalid_role_claim_key")