diff --git a/APPL/FAC/perfmon.asp b/APPL/FAC/perfmon.asp
index f211e88666..476d4d62f8 100644
--- a/APPL/FAC/perfmon.asp
+++ b/APPL/FAC/perfmon.asp
@@ -187,7 +187,8 @@ function toMillisec(sTime)
         var sDate = new Date();
         do
         {
-            oRs = Oracle.RealConnection.Execute(sql); // RealExecution voorkomt overhead van logging
+            var oRs = Oracle.RealConnection.Execute(sql); // RealExecution voorkomt overhead van logging
+            oRs.Close();
             cnt ++;
             var endDate = new Date();
         } while ((endDate - sDate) < maxtime)
@@ -245,6 +246,7 @@ function toMillisec(sTime)
       oRs = Oracle.Execute(sql);
       oRs = Oracle.Execute("SELECT COUNT(*) FROM fac_rapport WHERE fac_rapport_node = " + safe.quoted_sql(Session.SessionID));
       t1 = toMillisec(250 / oRs(0).value);
+      oRs.Close();
       Response.Write("<tr><td>1000 records toevoegen</td><td align=right>" + t1 + "ms</td></tr>");
 %>
       </table>
@@ -277,6 +279,7 @@ function toMillisec(sTime)
         oRs.MoveNext();
         cnt ++;
       }
+      oRs.Close();
       t3 = toMillisec(10 * (endDate - sDate) / cnt);
       Response.Write("<tr><td>10000 records ophalen:</td><td align=right>" + t3 + "ms</td></tr>");
       Oracle.Execute("DELETE FROM FAC_RAPPORT WHERE fac_rapport_node = " + safe.quoted_sql(Session.SessionID)) // Opruimen