diff --git a/database_utils/migrate_vim_db.sh b/database_utils/migrate_vim_db.sh
index 6a08a44..599938d 100755
--- a/database_utils/migrate_vim_db.sh
+++ b/database_utils/migrate_vim_db.sh
@@ -184,6 +184,7 @@
 [ $OPENVIM_VER_NUM -ge 5007 ] && DATABASE_TARGET_VER_NUM=14  #0.5.7   => 14
 [ $OPENVIM_VER_NUM -ge 5008 ] && DATABASE_TARGET_VER_NUM=15  #0.5.8   => 15
 [ $OPENVIM_VER_NUM -ge 5009 ] && DATABASE_TARGET_VER_NUM=16  #0.5.9   => 16
+[ $OPENVIM_VER_NUM -ge 5010 ] && DATABASE_TARGET_VER_NUM=17  #0.5.10  => 17
 #TODO ... put next versions here
 
 function upgrade_to_1(){
@@ -620,6 +621,31 @@
     echo "ALTER TABLE ofcs DROP COLUMN last_error, DROP COLUMN status;	" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
     echo "DELETE FROM schema_version WHERE version_int = '16';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
 }
+
+function upgrade_to_17(){
+    echo "    upgrade database from version 0.16 to version 0.17"
+    echo "    Add pci to the unique indexes switch_dpid_switch_port switch_dpid_switch_mac at of_port_mappings"
+    echo "ALTER TABLE of_port_mappings DROP INDEX switch_dpid_switch_port, "\
+          "ADD UNIQUE INDEX switch_dpid_switch_port (switch_dpid, switch_port, pci);" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "ALTER TABLE of_port_mappings DROP INDEX switch_dpid_switch_mac, "\
+         "ADD UNIQUE INDEX switch_dpid_switch_mac (switch_dpid, switch_mac, pci);" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "    Add nets_with_same_vlan to table ofcs"
+    echo "ALTER TABLE ofcs ADD COLUMN nets_with_same_vlan ENUM('true','false') NOT NULL DEFAULT 'false' AFTER status;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "INSERT INTO schema_version (version_int, version, openvim_ver, comments, date) VALUES (17, '0.17', '0.5.10', 'Add pci to unique index dpid port/mac at of_port_mappings', '2017-04-05');"| $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+
+function downgrade_from_17(){
+    echo "    downgrade database from version 0.17 to version 0.16"
+    echo "    Delete pci fromthe unique indexes switch_dpid_switch_port switch_dpid_switch_mac at of_port_mappings"
+    echo "ALTER TABLE of_port_mappings DROP INDEX switch_dpid_switch_port, "\
+         "ADD UNIQUE INDEX switch_dpid_switch_port (switch_dpid, switch_port);" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "ALTER TABLE of_port_mappings DROP INDEX switch_dpid_switch_mac, "\
+         "ADD UNIQUE INDEX switch_dpid_switch_mac (switch_dpid, switch_mac);" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "    Remove nets_with_same_vlan from table ofcs"
+    echo "ALTER TABLE ofcs DROP COLUMN nets_with_same_vlan;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "DELETE FROM schema_version WHERE version_int = '17';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+
 #TODO ... put funtions here
 
 echo "db version = "${DATABASE_VER_NUM}
diff --git a/ovim.py b/ovim.py
index bf1f311..efdb58b 100755
--- a/ovim.py
+++ b/ovim.py
@@ -29,9 +29,9 @@
 
 __author__ = "Alfonso Tierno, Leonardo Mirabal"
 __date__ = "$06-Feb-2017 12:07:15$"
-__version__ = "0.5.8-r524"
-version_date = "March 2017"
-database_version = "0.15"      #expected database schema version
+__version__ = "0.5.10-r526"
+version_date = "Apr 2017"
+database_version = "0.17"      #expected database schema version
 
 import threading
 import vim_db
@@ -95,16 +95,17 @@
 
     def __init__(self, configuration):
         self.config = configuration
-        self.logger = logging.getLogger(configuration["logger_name"])
+        self.logger_name = configuration.get("logger_name", "openvim")
+        self.logger = logging.getLogger(self.logger_name)
         self.db = None
-        self.db =   self._create_database_connection()
+        self.db = self._create_database_connection()
         self.db_lock = None
         self.db_of = None
         self.of_test_mode = False
 
     def _create_database_connection(self):
         db = vim_db.vim_db((self.config["network_vlan_range_start"], self.config["network_vlan_range_end"]),
-                           self.config['log_level_db']);
+                           self.logger_name + ".db", self.config.get('log_level_db'))
         if db.connect(self.config['db_host'], self.config['db_user'], self.config['db_passwd'],
                       self.config['db_name']) == -1:
             # self.logger.error("Cannot connect to database %s at %s@%s", self.config['db_name'], self.config['db_user'],
@@ -176,7 +177,8 @@
         elif r[1] != database_version:
             raise ovimException("DATABASE wrong version '{}'. Try to upgrade/downgrade to version '{}' with "\
                                 "'./database_utils/migrate_vim_db.sh'".format(r[1], database_version) )
-
+        self.logger.critical("Starting ovim server version: '{} {}' database version '{}'".format(
+            self.get_version(), self.get_version_date(), self.get_database_version()))
         # create database connection for openflow threads
         self.db_of = self._create_database_connection()
         self.config["db"] = self.db_of
@@ -1369,9 +1371,12 @@
 if __name__ == "__main__":
 
     parser = argparse.ArgumentParser()
-    parser.add_argument("-v","--version", help="increase output verbosity", action="store_true")
+    parser.add_argument("-v","--version", help="show ovim library version", action="store_true")
+    parser.add_argument("--database-version", help="show required database version", action="store_true")
     args = parser.parse_args()
     if args.version:
         print ('openvimd version {} {}'.format(ovim.get_version(), ovim.get_version_date()))
         print ('(c) Copyright Telefonica')
+    elif args.database_version:
+        print ('required database version: {}'.format(ovim.get_database_version()))
 
diff --git a/vim_db.py b/vim_db.py
index ce19cf6..c34160d 100644
--- a/vim_db.py
+++ b/vim_db.py
@@ -50,7 +50,7 @@
 
 
 class vim_db():
-    def __init__(self, vlan_range, debug="ERROR"):
+    def __init__(self, vlan_range, logger_name= None, debug=None):
         '''vlan_range must be a tuple (vlan_ini, vlan_end) with available vlan values for networks
         every dataplane network contain a unique value, regardless of it is used or not 
         ''' 
@@ -59,8 +59,13 @@
         self.net_vlan_usedlist = None
         self.net_vlan_lastused = self.net_vlan_range[0] -1
         self.debug=debug
-        self.logger = logging.getLogger('vim.db')
-        self.logger.setLevel( getattr(logging, debug) )
+        if logger_name:
+            self.logger_name = logger_name
+        else:
+            self.logger_name = 'openvim.db'
+        self.logger = logging.getLogger(self.logger_name)
+        if debug:
+            self.logger.setLevel( getattr(logging, debug) )
 
 
     def connect(self, host=None, user=None, passwd=None, database=None):