diff --git a/gluon/contrib/redis_session.py b/gluon/contrib/redis_session.py
index 8639f496..4ea11442 100644
--- a/gluon/contrib/redis_session.py
+++ b/gluon/contrib/redis_session.py
@@ -13,7 +13,7 @@ from gluon import current
 from gluon.storage import Storage
 from gluon.contrib.redis_utils import acquire_lock, release_lock
 from gluon.contrib.redis_utils import register_release_lock
-from gluon._compat import to_bytes
+from gluon._compat import to_native
 
 logger = logging.getLogger("web2py.session.redis")
 
@@ -182,11 +182,11 @@ class MockQuery(object):
             key = self.keyprefix + ':' + str(self.value)
             if self.with_lock:
                 acquire_lock(self.db.r_server, key + ':lock', self.value, 2)
-            rtn = self.db.r_server.hgetall(key)
+            rtn = {to_native(k.decode): v for k, v in self.db.r_server.hgetall(key).items()}
             if rtn:
                 if self.unique_key:
                     # make sure the id and unique_key are correct
-                    if rtn['unique_key'] == self.unique_key:
+                    if rtn['unique_key'] == to_native(self.unique_key):
                         rtn['update_record'] = self.update  # update record support
                     else:
                         rtn = None
diff --git a/gluon/globals.py b/gluon/globals.py
index a3b95d31..43276e44 100644
--- a/gluon/globals.py
+++ b/gluon/globals.py
@@ -13,7 +13,7 @@ Contains the classes for the global used variables:
 
 """
 from gluon._compat import pickle, StringIO, copyreg, Cookie, urlparse, PY2, iteritems, to_unicode, to_native, \
-    to_bytes, unicodeT, long, hashlib_md5, urllib_quote
+    to_bytes, unicodeT, long, hashlib_md5, urllib_quote, to_native
 from gluon.storage import Storage, List
 from gluon.streamer import streamer, stream_file_or_304_or_206, DEFAULT_CHUNK_SIZE
 from gluon.contenttype import contenttype
@@ -1055,7 +1055,7 @@ class Session(Storage):
             if record_id.isdigit() and long(record_id) > 0:
                 new_unique_key = web2py_uuid()
                 row = table(record_id)
-                if row and row['unique_key'] == unique_key:
+                if row and to_native(row['unique_key']) == to_native(unique_key):
                     table._db(table.id == record_id).update(unique_key=new_unique_key)
                 else:
                     record_id = None
@@ -1231,9 +1231,9 @@ class Session(Storage):
 
         session_pickled = response.session_pickled or pickle.dumps(self, pickle.HIGHEST_PROTOCOL)
 
-        dd = dict(locked=False,
+        dd = dict(locked=0,
                   client_ip=response.session_client,
-                  modified_datetime=request.now,
+                  modified_datetime=request.now.isostring(),
                   session_data=session_pickled,
                   unique_key=unique_key)
         if record_id:
diff --git a/gluon/packages/dal b/gluon/packages/dal
index bf208124..8e2305ed 160000
--- a/gluon/packages/dal
+++ b/gluon/packages/dal
@@ -1 +1 @@
-Subproject commit bf2081247d1d1ac6cdf656de841bfe0fa0dd1155
+Subproject commit 8e2305ed3efb923130389e0fd92393d471234ea2