--- main/plugin-core/src/org/ametys/runtime/plugins/core/group/jdbc/ModifiableJdbcGroupsManager.java	2012-10-17 13:15:14.000000000 +0400
+++ main/plugin-core/src/org/ametys/runtime/plugins/core/group/jdbc/ModifiableJdbcGroupsManager.java	2013-07-07 08:55:08.000000000 +0400
@@ -447,6 +447,15 @@
                     id = rs.getString(1);
                 }
             }
+            else if (DatabaseType.DATABASE_HSQLDB.equals(ConnectionHelper.getDatabaseType(connection)))
+            {
+                statement = connection.prepareStatement("CALL IDENTITY()");
+                rs = statement.executeQuery();
+                if (rs.next())
+                {
+                    id = rs.getString(1);
+                }
+            }
             else if (DatabaseType.DATABASE_POSTGRES.equals(ConnectionHelper.getDatabaseType(connection)))
             {
                 statement = connection.prepareStatement("SELECT currval('groups_id_seq')");