diff --git a/src/mnode/src/mnodeTable.c b/src/mnode/src/mnodeTable.c
index a30b359970adb40f8fce1777d9a96fed10dcf6ce..93ee96a67455b43b0386d2d4a6f02d8bb77ec036 100644
--- a/src/mnode/src/mnodeTable.c
+++ b/src/mnode/src/mnodeTable.c
@@ -182,14 +182,19 @@ static int32_t mnodeChildTableActionUpdate(SSdbOper *pOper) {
   SChildTableObj *pNew = pOper->pObj;
   SChildTableObj *pTable = mnodeGetChildTable(pNew->info.tableId);
   if (pTable != pNew) {
-    void *oldTableId = pTable->info.tableId;
+    void *oldTableId = pTable->info.tableId;    
     void *oldSql = pTable->sql;
     void *oldSchema = pTable->schema;
+    void *oldSTable = pTable->superTable;
     int32_t oldRefCount = pTable->refCount;
+    
     memcpy(pTable, pNew, sizeof(SChildTableObj));
+    
     pTable->refCount = oldRefCount;
     pTable->sql = pNew->sql;
     pTable->schema = pNew->schema;
+    pTable->superTable = oldSTable;
+    
     free(pNew);
     free(oldSql);
     free(oldSchema);
diff --git a/src/mnode/src/mnodeVgroup.c b/src/mnode/src/mnodeVgroup.c
index efa823d5311eb0272076f98a719b2baf12b86e68..10dfb2a28a7bbc21ffcbaa134f83bbbc9226563e 100644
--- a/src/mnode/src/mnodeVgroup.c
+++ b/src/mnode/src/mnodeVgroup.c
@@ -149,17 +149,8 @@ static int32_t mnodeVgroupActionUpdate(SSdbOper *pOper) {
       }
     }
 
-    void *idPool = pVgroup->idPool;
-    void *tableList = pVgroup->tableList;
-    int32_t oldRefCount = pVgroup->refCount;
-
-    memcpy(pVgroup, pNew, sizeof(SVgObj));
-    
-    free(pNew);
-    pVgroup->refCount = oldRefCount;
-    pVgroup->idPool = idPool;
-    pVgroup->tableList = tableList;
-    
+    memcpy(pVgroup, pNew, tsVgUpdateSize);
+
     for (int32_t i = 0; i < pVgroup->numOfVnodes; ++i) {
       SDnodeObj *pDnode = mnodeGetDnode(pVgroup->vnodeGid[i].dnodeId);
       pVgroup->vnodeGid[i].pDnode = pDnode;