diff --git a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/AppService.java b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/AppService.java
index 34e37f6725057acf2154c16a0289db097b6bc7c3..9e14472080e039e972ffe0b75ff88800e207fed9 100644
--- a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/AppService.java
+++ b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/AppService.java
@@ -30,10 +30,17 @@ public class AppService {
   }
   
   @Transactional
-  public void delete(long id, String owner) {
-    appRepository.delete(id);
+  public void delete(long id, String operator) {
+    App app = appRepository.findOne(id);
+    if (app == null) {
+      return;
+    }
+
+    app.setDeleted(true);
+    app.setDataChangeLastModifiedBy(operator);
+    appRepository.save(app);
 
-    auditService.audit(App.class.getSimpleName(), id, Audit.OP.DELETE, owner);
+    auditService.audit(App.class.getSimpleName(), id, Audit.OP.DELETE, operator);
   }
 
   public List<App> findAll(Pageable pageable) {
diff --git a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ClusterService.java b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ClusterService.java
index d672d4dd00aaab89946bab5d605ed8b506c48206..ef1fcbf8768701c9bd256f350638f66b5247d0d6 100644
--- a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ClusterService.java
+++ b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ClusterService.java
@@ -62,10 +62,17 @@ public class ClusterService {
   }
 
   @Transactional
-  public void delete(long id, String owner) {
-    clusterRepository.delete(id);
+  public void delete(long id, String operator) {
+    Cluster cluster = clusterRepository.findOne(id);
+    if (cluster == null) {
+      return;
+    }
+
+    cluster.setDeleted(true);
+    cluster.setDataChangeLastModifiedBy(operator);
+    clusterRepository.save(cluster);
 
-    auditService.audit(Cluster.class.getSimpleName(), id, Audit.OP.DELETE, owner);
+    auditService.audit(Cluster.class.getSimpleName(), id, Audit.OP.DELETE, operator);
   }
 
   @Transactional
diff --git a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ItemService.java b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ItemService.java
index e00656d3f32d8d23a81d490f95310dc997cff63f..c29b824575f00e566d0f24e90fa946fc90ad0ee3 100644
--- a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ItemService.java
+++ b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ItemService.java
@@ -1,12 +1,5 @@
 package com.ctrip.framework.apollo.biz.service;
 
-import java.util.Collections;
-import java.util.List;
-
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
-
 import com.ctrip.framework.apollo.biz.entity.Audit;
 import com.ctrip.framework.apollo.biz.entity.Item;
 import com.ctrip.framework.apollo.biz.entity.Namespace;
@@ -15,6 +8,13 @@ import com.ctrip.framework.apollo.biz.repository.NamespaceRepository;
 import com.ctrip.framework.apollo.common.utils.BeanUtils;
 import com.ctrip.framework.apollo.core.exception.NotFoundException;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Collections;
+import java.util.List;
+
 @Service
 public class ItemService {
 
@@ -28,10 +28,17 @@ public class ItemService {
   private AuditService auditService;
 
   @Transactional
-  public void delete(long id, String owner) {
-    itemRepository.delete(id);
+  public void delete(long id, String operator) {
+    Item item = itemRepository.findOne(id);
+    if (item == null) {
+      return;
+    }
+
+    item.setDeleted(true);
+    item.setDataChangeLastModifiedBy(operator);
+    itemRepository.save(item);
 
-    auditService.audit(Item.class.getSimpleName(), id, Audit.OP.DELETE, owner);
+    auditService.audit(Item.class.getSimpleName(), id, Audit.OP.DELETE, operator);
   }
 
   public Item findOne(String appId, String clusterName, String namespaceName, String key) {
diff --git a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ItemSetService.java b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ItemSetService.java
index cb3a06012d14ddeeaa480403963a245bb83887e7..15b4c9955ea02eb8a58bc81d20494f85d39ccdd4 100644
--- a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ItemSetService.java
+++ b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/ItemSetService.java
@@ -23,15 +23,15 @@ public class ItemSetService {
 
   @Transactional
   public void updateSet(ItemChangeSets changeSet) {
-    String owner = changeSet.getDataChangeLastModifiedBy();
+    String operator = changeSet.getDataChangeLastModifiedBy();
     if (!CollectionUtils.isEmpty(changeSet.getCreateItems())) {
       for (ItemDTO item : changeSet.getCreateItems()) {
         Item entity = BeanUtils.transfrom(Item.class, item);
-        entity.setDataChangeCreatedBy(owner);
-        entity.setDataChangeLastModifiedBy(owner);
+        entity.setDataChangeCreatedBy(operator);
+        entity.setDataChangeLastModifiedBy(operator);
         itemRepository.save(entity);
       }
-      auditService.audit("ItemSet", null, Audit.OP.INSERT, owner);
+      auditService.audit("ItemSet", null, Audit.OP.INSERT, operator);
     }
 
     if (!CollectionUtils.isEmpty(changeSet.getUpdateItems())) {
@@ -39,20 +39,20 @@ public class ItemSetService {
         Item entity = BeanUtils.transfrom(Item.class, item);
         Item managedItem = itemRepository.findOne(entity.getId());
         BeanUtils.copyEntityProperties(entity, managedItem);
-        managedItem.setDataChangeLastModifiedBy(owner);
+        managedItem.setDataChangeLastModifiedBy(operator);
         itemRepository.save(managedItem);
       }
-      auditService.audit("ItemSet", null, Audit.OP.UPDATE, owner);
+      auditService.audit("ItemSet", null, Audit.OP.UPDATE, operator);
     }
 
     if (!CollectionUtils.isEmpty(changeSet.getDeleteItems())) {
       for (ItemDTO item : changeSet.getDeleteItems()) {
         Item entity = BeanUtils.transfrom(Item.class, item);
-        entity.setDataChangeLastModifiedBy(owner);
+        entity.setDeleted(true);
+        entity.setDataChangeLastModifiedBy(operator);
         itemRepository.save(entity);
-        itemRepository.delete(item.getId());
       }
-      auditService.audit("ItemSet", null, Audit.OP.DELETE, owner);
+      auditService.audit("ItemSet", null, Audit.OP.DELETE, operator);
     }
   }
 }
diff --git a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/NamespaceService.java b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/NamespaceService.java
index 5cebb581a1bdeec73a19ef5310b63077b6b7dc7d..ccd692e97860ad4fbcfc78e97d32c1b6c2d2b5a5 100644
--- a/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/NamespaceService.java
+++ b/apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/service/NamespaceService.java
@@ -33,10 +33,17 @@ public class NamespaceService {
   }
 
   @Transactional
-  public void delete(long id, String owner) {
-    namespaceRepository.delete(id);
+  public void delete(long id, String operator) {
+    Namespace namespace = namespaceRepository.findOne(id);
+    if (namespace == null) {
+      return;
+    }
+
+    namespace.setDeleted(true);
+    namespace.setDataChangeLastModifiedBy(operator);
+    namespaceRepository.save(namespace);
 
-    auditService.audit(Namespace.class.getSimpleName(), id, Audit.OP.DELETE, owner);
+    auditService.audit(Namespace.class.getSimpleName(), id, Audit.OP.DELETE, operator);
   }
 
   public Namespace findOne(Long namespaceId) {
diff --git a/apollo-common/src/main/java/com/ctrip/framework/apollo/common/controller/GlobalDefaultExceptionHandler.java b/apollo-common/src/main/java/com/ctrip/framework/apollo/common/controller/GlobalDefaultExceptionHandler.java
index a65a6fa1b38bfe0baf83f81ca9ca96800b31d0bb..ce37032d1431ddf0eeff03a6c8d2dca4be19251c 100644
--- a/apollo-common/src/main/java/com/ctrip/framework/apollo/common/controller/GlobalDefaultExceptionHandler.java
+++ b/apollo-common/src/main/java/com/ctrip/framework/apollo/common/controller/GlobalDefaultExceptionHandler.java
@@ -62,7 +62,7 @@ public class GlobalDefaultExceptionHandler {
     errorAttributes.put("timestamp",
         LocalDateTime.now().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));
     errorAttributes.put("exception", resolveError(ex).getClass().getName());
-    errorAttributes.put("stackTrace", ex.getStackTrace());
+//    errorAttributes.put("stackTrace", ex.getStackTrace());
     if (ex instanceof AbstractBaseException) {
       errorAttributes.put("errorCode", ((AbstractBaseException) ex).getErrorCode());
     }