diff --git a/fail2ban/server/database.py b/fail2ban/server/database.py
index 560fbfe5..9f562511 100644
--- a/fail2ban/server/database.py
+++ b/fail2ban/server/database.py
@@ -293,8 +293,12 @@ class Fail2BanDb(object):
 			Jail to be added to the database.
 		"""
 		cur.execute(
-			"INSERT OR REPLACE INTO jails(name, enabled) VALUES(?, 1)",
+			"INSERT OR IGNORE INTO jails(name, enabled) VALUES(?, 1)",
 			(jail.name,))
+		if cur.rowcount <= 0:
+			cur.execute(
+				"UPDATE jails SET enabled = 1 WHERE name = ? AND enabled != 1",
+				(jail.name,))
 
 	@commitandrollback
 	def delJail(self, cur, jail):
@@ -317,7 +321,7 @@ class Fail2BanDb(object):
 		cur.execute("UPDATE jails SET enabled=0")
 
 	@commitandrollback
-	def getJailNames(self, cur):
+	def getJailNames(self, cur, enabled=None):
 		"""Get name of jails in database.
 
 		Currently only used for testing purposes.
@@ -327,7 +331,11 @@ class Fail2BanDb(object):
 		set
 			Set of jail names.
 		"""
-		cur.execute("SELECT name FROM jails")
+		if enabled is None:
+			cur.execute("SELECT name FROM jails")
+		else:
+			cur.execute("SELECT name FROM jails WHERE enabled=%s" %
+				(int(enabled),))
 		return set(row[0] for row in cur.fetchmany())
 
 	@commitandrollback
diff --git a/fail2ban/tests/utils.py b/fail2ban/tests/utils.py
index 7bccf6e2..e091c935 100644
--- a/fail2ban/tests/utils.py
+++ b/fail2ban/tests/utils.py
@@ -271,6 +271,7 @@ class LogCaptureTestCase(unittest.TestCase):
 	def tearDown(self):
 		"""Call after every test case."""
 		# print "O: >>%s<<" % self._log.getvalue()
+		self.pruneLog()
 		logSys = getLogger("fail2ban")
 		logSys.handlers = self._old_handlers
 		logSys.level = self._old_level
@@ -278,7 +279,7 @@ class LogCaptureTestCase(unittest.TestCase):
 	def _is_logged(self, s):
 		return s in self._log.getvalue()
 
-	def assertLogged(self, *s):
+	def assertLogged(self, *s, **kwargs):
 		"""Assert that one of the strings was logged
 
 		Preferable to assertTrue(self._is_logged(..)))
@@ -288,14 +289,23 @@ class LogCaptureTestCase(unittest.TestCase):
 		----------
 		s : string or list/set/tuple of strings
 		  Test should succeed if string (or any of the listed) is present in the log
+		all : boolean (default False) if True should fail if any of s not logged
 		"""
 		logged = self._log.getvalue()
-		for s_ in s:
-			if s_ in logged:
-				return
-		raise AssertionError("None among %r was found in the log: %r" % (s, logged))
+		if not kwargs.get('all', False):
+			# at least one entry should be found:
+			for s_ in s:
+				if s_ in logged:
+					return
+			if True: # pragma: no cover
+				self.fail("None among %r was found in the log: ===\n%s===" % (s, logged))
+		else:
+			# each entry should be found:
+			for s_ in s:
+				if s_ not in logged: # pragma: no cover
+					self.fail("%r was not found in the log: ===\n%s===" % (s_, logged))
 
-	def assertNotLogged(self, *s):
+	def assertNotLogged(self, *s, **kwargs):
 		"""Assert that strings were not logged
 
 		Parameters
@@ -303,13 +313,22 @@ class LogCaptureTestCase(unittest.TestCase):
 		s : string or list/set/tuple of strings
 		  Test should succeed if the string (or at least one of the listed) is not
 		  present in the log
+		all : boolean (default False) if True should fail if any of s logged
 		"""
 		logged = self._log.getvalue()
-		for s_ in s:
-			if s_ not in logged:
-				return
-		raise AssertionError("All of the %r were found present in the log: %r" % (s, logged))
+		if not kwargs.get('all', False):
+			for s_ in s:
+				if s_ not in logged:
+					return
+			if True: # pragma: no cover
+				self.fail("All of the %r were found present in the log: ===\n%s===" % (s, logged))
+		else:
+			for s_ in s:
+				if s_ in logged: # pragma: no cover
+					self.fail("%r was found in the log: ===\n%s===" % (s_, logged))
 
+	def pruneLog(self):
+		self._log.truncate(0)
 
 	def getLog(self):
 		return self._log.getvalue()