diff --git a/PgDB.py b/PgDB.py
index 5eb2fee..efbef2a 100644
--- a/PgDB.py
+++ b/PgDB.py
@@ -30,8 +30,8 @@ class PgDB(object):
 			try:
 				con = psycopg2.connect("dbname='%s' user='%s' host='%s' password='%s'" % (self.db,self.user,self.host,self.pwd))
 				self.con = con
-			except Exception, e:
-				logging.fatal(e)
+			except Exception:
+				logging.fatal('An error occured during Postgresql database connection.', exc_info=1)
 				sys.exit(1)
 
 	def close(self):
@@ -43,8 +43,8 @@ class PgDB(object):
 			try:
 				self.con.set_client_encoding(enc)
 				return True
-			except Exception, e:
-				logging.error(e)
+			except Exception:
+				logging.error('An error occured setting Postgresql database connection encoding to "%s"', enc, exc_info=1)
 		return False
 
 	def doSQL(self,sql,params=None):
@@ -56,8 +56,8 @@ class PgDB(object):
 				cursor.execute(sql,params)
 			self.con.commit()
 			return True
-		except Exception, e:
-			logging.error(u'Error during SQL request "%s" :\n\n%s' % (sql.decode('utf-8', 'ignore'), traceback.format_exc()))
+		except Exception:
+			logging.error(u'Error during SQL request "%s"', sql.decode('utf-8', 'ignore'), exc_info=1)
 			self.con.rollback()
 			return False
 
@@ -67,8 +67,8 @@ class PgDB(object):
 			cursor.execute(sql)
 			results = cursor.fetchall()
 			return results
-		except Exception, e:
-			logging.error(u'Error during SQL request "%s" :\n\n%s' % (sql.decode('utf-8', 'ignore'), traceback.format_exc()))
+		except Exception:
+			logging.error(u'Error during SQL request "%s"', sql.decode('utf-8', 'ignore'), exc_info=1)
 			return False
 
 	#
@@ -94,7 +94,7 @@ class PgDB(object):
 			return (u" %s " % where_op).join(where_clauses)
 		elif type(where_clauses) is dict:
 			return (u" %s " % where_op).join(map(lambda x: "%s=%s" % (x, _quote_value(where_clauses[x])), where_clauses))
-		logging.error('Unsupported where clauses type %s' % type(where_clauses))
+		logging.error('Unsupported where clauses type %s', type(where_clauses))
 		return False
 
 	def _format_datetime(self, datetime):
@@ -113,7 +113,7 @@ class PgDB(object):
 		sql=u"INSERT INTO %s (%s) VALUES (%s)" % (table, u', '.join(values.keys()), u", ".join(map(lambda x: self._quote_value(values[x]), values)))
 
 		if just_try:
-			logging.debug(u"Just-try mode : execute INSERT query : %s" % sql)
+			logging.debug(u"Just-try mode : execute INSERT query : %s", sql)
 			return True
 
 		logging.debug(sql)
@@ -130,12 +130,12 @@ class PgDB(object):
 		sql=u"UPDATE %s SET  %s WHERE %s" % (table, u", ".join(map(lambda x: "%s=%s" % (x, self._quote_value(values[x])), values)), where)
 
 		if just_try:
-			logging.debug(u"Just-try mode : execute UPDATE query : %s" % sql)
+			logging.debug(u"Just-try mode : execute UPDATE query : %s", sql)
 			return True
 
 		logging.debug(sql)
 		if not self.doSQL(sql):
-			logging.error(u"Fail to execute UPDATE query (SQL : %s)" % sql)
+			logging.error(u"Fail to execute UPDATE query (SQL : %s)", sql)
 			return False
 		return True
 
@@ -147,12 +147,12 @@ class PgDB(object):
 		sql=u"DELETE FROM %s WHERE %s" % (table, where)
 
 		if just_try:
-			logging.debug(u"Just-try mode : execute DELETE query : %s" % sql)
+			logging.debug(u"Just-try mode : execute DELETE query : %s", sql)
 			return True
 
 		logging.debug(sql)
 		if not self.doSQL(sql):
-			logging.error(u"Fail to execute DELETE query (SQL : %s)" % sql)
+			logging.error(u"Fail to execute DELETE query (SQL : %s)", sql)
 			return False
 		return True