diff --git a/core/upgrade/src/main/java/org/opennms/upgrade/implementations/SnmpInterfaceRrdMigratorOnline.java b/core/upgrade/src/main/java/org/opennms/upgrade/implementations/SnmpInterfaceRrdMigratorOnline.java
index 6c535d1..1e94ca1 100644
--- a/core/upgrade/src/main/java/org/opennms/upgrade/implementations/SnmpInterfaceRrdMigratorOnline.java
+++ b/core/upgrade/src/main/java/org/opennms/upgrade/implementations/SnmpInterfaceRrdMigratorOnline.java
@@ -254,6 +254,7 @@ public class SnmpInterfaceRrdMigratorOnline extends AbstractOnmsUpgrade {
                 reason = "Unknown";
             }
             log("Reason(%s): %s\n", t.getClass().getName(), reason);
+            t.printStackTrace();
         } finally {
             db.cleanUp();
         }