diff --git a/trytond/ir/cron.py b/trytond/ir/cron.py
index 9c14f471d8..55d3dad5a3 100644
--- a/trytond/ir/cron.py
+++ b/trytond/ir/cron.py
@@ -12,8 +12,6 @@ from trytond import pooler
 from trytond.osv import fields, OSV
 from trytond.netsvc import Agent
 
-NEXT_WAIT = 60
-
 _INTERVALTYPES = {
     'work_days': lambda interval: DateTime.RelativeDateTime(days=interval),
     'days': lambda interval: DateTime.RelativeDateTime(days=interval),
@@ -81,7 +79,7 @@ class Cron(OSV, Agent):
             fct = getattr(obj, func)
             fct(cursor, user, *args)
 
-    def pool_jobs(self, db_name, check=False):
+    def pool_jobs(self, db_name):
         #TODO Error treatment: exception, request, ... -> send request to user
         now = DateTime.now()
         try:
@@ -121,9 +119,5 @@ class Cron(OSV, Agent):
                 cursor.commit()
         finally:
             cursor.close()
-        #TODO improved to do at the min(min(nextcalls), time() + NEWT_WAIT)
-        if not check:
-            self.set_alarm(self.pool_jobs, int(time.time()) + NEXT_WAIT,
-                    [db_name])
 
 Cron()
diff --git a/trytond/pooler.py b/trytond/pooler.py
index be8d39ecba..578959057a 100644
--- a/trytond/pooler.py
+++ b/trytond/pooler.py
@@ -40,8 +40,6 @@ def get_db_and_pool(db_name, update_module=False, wizard=False, report=False,
         from module import load_modules
         load_modules(database, update_module, lang)
 
-        if not update_module:
-            pool.get('ir.cron').pool_jobs(database.dbname)
     if wizard:
         return database, pool_wizard
     if report:
@@ -74,6 +72,9 @@ def get_db_only(db_name):
 def get_db(db_name):
     return get_db_and_pool(db_name)[0]
 
+def get_db_list():
+    return _DB.keys()
+
 def get_pool(db_name, update_module=False, lang=None):
     pool = get_db_and_pool(db_name, update_module, lang=lang)[1]
     return pool
diff --git a/trytond/trytond.py b/trytond/trytond.py
index 0955364d28..228d22cdd3 100644
--- a/trytond/trytond.py
+++ b/trytond/trytond.py
@@ -206,8 +206,16 @@ class TrytonServer(object):
         if CONFIG['webdav']:
             webdavd.start()
         #DISPATCHER.run()
+        count = 0
         while True:
             time.sleep(1)
+            count += 1
+            if count == 60:
+                #TODO check if we don't need to run pool_jobs in a thread
+                for dbname in pooler.get_db_list():
+                    pool = pooler.get_pool(dbname)
+                    pool.get('ir.cron').pool_jobs(dbname)
+                count = 0
 
 if __name__ == "__main__":
     SERVER = TrytonServer()