diff --git a/include/libs/qcom/query.h b/include/libs/qcom/query.h
index b8d09e2262fd83f64d2f88794612f25daac1fd2b..268649524f7186ba82ecf5cf1cd55a38489ff91a 100644
--- a/include/libs/qcom/query.h
+++ b/include/libs/qcom/query.h
@@ -239,6 +239,7 @@ int32_t dataConverToStr(char* str, int type, void* buf, int32_t bufSize, int32_t
 char*   parseTagDatatoJson(void* p);
 int32_t cloneTableMeta(STableMeta* pSrc, STableMeta** pDst);
 int32_t cloneDbVgInfo(SDBVgInfo* pSrc, SDBVgInfo** pDst);
+void    freeVgInfo(SDBVgInfo* vgInfo);
 
 extern int32_t (*queryBuildMsg[TDMT_MAX])(void* input, char** msg, int32_t msgSize, int32_t* msgLen,
                                           void* (*mallocFp)(int64_t));
diff --git a/source/libs/catalog/inc/catalogInt.h b/source/libs/catalog/inc/catalogInt.h
index 085b2c1112d12de41227861bfea1fa1d43271d33..ba9990658955f29b437ae0f17c36e24b3a6e84c3 100644
--- a/source/libs/catalog/inc/catalogInt.h
+++ b/source/libs/catalog/inc/catalogInt.h
@@ -762,7 +762,6 @@ int32_t ctgCloneMetaOutput(STableMetaOutput* output, STableMetaOutput** pOutput)
 int32_t ctgGenerateVgList(SCatalog* pCtg, SHashObj* vgHash, SArray** pList);
 void    ctgFreeJob(void* job);
 void    ctgFreeHandleImpl(SCatalog* pCtg);
-void    ctgFreeVgInfo(SDBVgInfo* vgInfo);
 int32_t ctgGetVgInfoFromHashValue(SCatalog* pCtg, SDBVgInfo* dbInfo, const SName* pTableName, SVgroupInfo* pVgroup);
 int32_t ctgGetVgInfosFromHashValue(SCatalog* pCtg, SCtgTaskReq* tReq, SDBVgInfo* dbInfo, SCtgTbHashsCtx* pCtx,
                                    char* dbFName, SArray* pNames, bool update);
@@ -790,6 +789,7 @@ int32_t ctgGetTbHashVgroup(SCatalog* pCtg, SRequestConnInfo* pConn, const SName*
 SName*  ctgGetFetchName(SArray* pNames, SCtgFetch* pFetch);
 int32_t ctgdGetOneHandle(SCatalog **pHandle);
 int     ctgVgInfoComp(const void* lp, const void* rp);
+int32_t ctgMakeVgArray(SDBVgInfo* dbInfo);
 
 extern SCatalogMgmt gCtgMgmt;
 extern SCtgDebug    gCTGDebug;
diff --git a/source/libs/catalog/src/catalog.c b/source/libs/catalog/src/catalog.c
index 3a398d15513eeda063448373b44bfeca10025d15..2b1bdeadf8fc93cf1b39d33226e3c7830a10316d 100644
--- a/source/libs/catalog/src/catalog.c
+++ b/source/libs/catalog/src/catalog.c
@@ -505,8 +505,7 @@ _return:
   taosMemoryFreeClear(tbMeta);
 
   if (vgInfo) {
-    taosHashCleanup(vgInfo->vgHash);
-    taosMemoryFreeClear(vgInfo);
+    freeVgInfo(vgInfo);
   }
 
   if (vgList) {
@@ -546,8 +545,7 @@ _return:
   }
 
   if (vgInfo) {
-    taosHashCleanup(vgInfo->vgHash);
-    taosMemoryFreeClear(vgInfo);
+    freeVgInfo(vgInfo);
   }
 
   CTG_RET(code);
@@ -778,8 +776,7 @@ _return:
   }
 
   if (vgInfo) {
-    taosHashCleanup(vgInfo->vgHash);
-    taosMemoryFreeClear(vgInfo);
+    freeVgInfo(vgInfo);
   }
 
   CTG_API_LEAVE(code);
@@ -836,8 +833,7 @@ _return:
     ctgRUnlockVgInfo(dbCache);
     ctgReleaseDBCache(pCtg, dbCache);
   } else if (dbInfo) {
-    taosHashCleanup(dbInfo->vgHash);
-    taosMemoryFreeClear(dbInfo);
+    freeVgInfo(dbInfo);
   }
 
   CTG_API_LEAVE(code);
@@ -849,7 +845,7 @@ int32_t catalogUpdateDBVgInfo(SCatalog* pCtg, const char* dbFName, uint64_t dbId
   int32_t code = 0;
 
   if (NULL == pCtg || NULL == dbFName || NULL == dbInfo) {
-    ctgFreeVgInfo(dbInfo);
+    freeVgInfo(dbInfo);
     CTG_ERR_JRET(TSDB_CODE_CTG_INVALID_INPUT);
   }
 
diff --git a/source/libs/catalog/src/ctgCache.c b/source/libs/catalog/src/ctgCache.c
index c319a8350f09349fd39964ffcd5711737ceefe14..4626d4527dfb8c6294eceaf5e034d8e0e41ce690 100644
--- a/source/libs/catalog/src/ctgCache.c
+++ b/source/libs/catalog/src/ctgCache.c
@@ -843,7 +843,7 @@ int32_t ctgUpdateVgroupEnqueue(SCatalog *pCtg, const char *dbFName, int64_t dbId
   if (NULL == msg) {
     ctgError("malloc %d failed", (int32_t)sizeof(SCtgUpdateVgMsg));
     taosMemoryFree(op);
-    ctgFreeVgInfo(dbInfo);
+    freeVgInfo(dbInfo);
     CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
   }
 
@@ -852,16 +852,12 @@ int32_t ctgUpdateVgroupEnqueue(SCatalog *pCtg, const char *dbFName, int64_t dbId
     dbFName = p + 1;
   }
 
-  if (dbInfo->vgHash && NULL == dbInfo->vgArray) {
-    dbInfo->vgArray = taosArrayInit(100, sizeof(SVgroupInfo));
-    
-    void*   pIter = taosHashIterate(dbInfo->vgHash, NULL);
-    while (pIter) {
-      taosArrayPush(dbInfo->vgArray, pIter);
-      pIter = taosHashIterate(dbInfo->vgHash, pIter);
-    }
-    
-    taosArraySort(dbInfo->vgArray, ctgVgInfoComp);
+  code = ctgMakeVgArray(dbInfo);
+  if (code) {
+    taosMemoryFree(op);
+    taosMemoryFree(msg);
+    freeVgInfo(dbInfo);
+    CTG_ERR_RET(code);
   }
 
   tstrncpy(msg->dbFName, dbFName, sizeof(msg->dbFName));
@@ -877,7 +873,7 @@ int32_t ctgUpdateVgroupEnqueue(SCatalog *pCtg, const char *dbFName, int64_t dbId
 
 _return:
 
-  ctgFreeVgInfo(dbInfo);
+  freeVgInfo(dbInfo);
   CTG_RET(code);
 }
 
@@ -1675,7 +1671,7 @@ int32_t ctgOpUpdateVgroup(SCtgCacheOperation *operation) {
       goto _return;
     }
 
-    ctgFreeVgInfo(vgInfo);
+    freeVgInfo(vgInfo);
   }
 
   vgCache->vgInfo = dbInfo;
@@ -1696,7 +1692,7 @@ int32_t ctgOpUpdateVgroup(SCtgCacheOperation *operation) {
 
 _return:
 
-  ctgFreeVgInfo(msg->dbInfo);
+  freeVgInfo(msg->dbInfo);
   taosMemoryFreeClear(msg);
 
   CTG_RET(code);
@@ -1749,7 +1745,7 @@ int32_t ctgOpDropDbVgroup(SCtgCacheOperation *operation) {
 
   CTG_ERR_JRET(ctgWLockVgInfo(pCtg, dbCache));
 
-  ctgFreeVgInfo(dbCache->vgCache.vgInfo);
+  freeVgInfo(dbCache->vgCache.vgInfo);
   dbCache->vgCache.vgInfo = NULL;
 
   ctgDebug("db vgInfo removed, dbFName:%s", msg->dbFName);
@@ -2139,7 +2135,7 @@ void ctgFreeCacheOperationData(SCtgCacheOperation *op) {
   switch (op->opId) {
     case CTG_OP_UPDATE_VGROUP: {
       SCtgUpdateVgMsg *msg = op->data;
-      ctgFreeVgInfo(msg->dbInfo);
+      freeVgInfo(msg->dbInfo);
       taosMemoryFreeClear(op->data);
       break;
     }
diff --git a/source/libs/catalog/src/ctgUtil.c b/source/libs/catalog/src/ctgUtil.c
index 17ee8bb68ee0f3d10c373938daa9ec46c168bf17..67db0c79d69d741bd8376bae66fdda0eeceefd46 100644
--- a/source/libs/catalog/src/ctgUtil.c
+++ b/source/libs/catalog/src/ctgUtil.c
@@ -231,18 +231,7 @@ void ctgFreeTbCache(SCtgDBCache* dbCache) {
   CTG_CACHE_STAT_DEC(numOfTbl, tblNum);
 }
 
-void ctgFreeVgInfo(SDBVgInfo* vgInfo) {
-  if (NULL == vgInfo) {
-    return;
-  }
-
-  taosHashCleanup(vgInfo->vgHash);
-  taosArrayDestroy(vgInfo->vgArray);
-
-  taosMemoryFreeClear(vgInfo);
-}
-
-void ctgFreeVgInfoCache(SCtgDBCache* dbCache) { ctgFreeVgInfo(dbCache->vgCache.vgInfo); }
+void ctgFreeVgInfoCache(SCtgDBCache* dbCache) { freeVgInfo(dbCache->vgCache.vgInfo); }
 
 void ctgFreeDbCache(SCtgDBCache* dbCache) {
   if (NULL == dbCache) {
@@ -364,8 +353,7 @@ void ctgFreeSUseDbOutput(SUseDbOutput* pOutput) {
   }
 
   if (pOutput->dbVgroup) {
-    taosHashCleanup(pOutput->dbVgroup->vgHash);
-    taosMemoryFreeClear(pOutput->dbVgroup);
+    freeVgInfo(pOutput->dbVgroup);
   }
 
   taosMemoryFree(pOutput);
@@ -571,8 +559,7 @@ void ctgFreeSubTaskRes(CTG_TASK_TYPE type, void** pRes) {
     case CTG_TASK_GET_DB_VGROUP: {
       if (*pRes) {
         SDBVgInfo* pInfo = (SDBVgInfo*)*pRes;
-        taosHashCleanup(pInfo->vgHash);
-        taosMemoryFreeClear(*pRes);
+        freeVgInfo(pInfo);
       }
       break;
     }
@@ -1035,7 +1022,33 @@ int32_t ctgDbVgVersionSortCompare(const void* key1, const void* key2) {
   }
 }
 
+int32_t ctgMakeVgArray(SDBVgInfo* dbInfo) {
+  if (NULL == dbInfo) {
+    return TSDB_CODE_SUCCESS;
+  }
+  
+  if (dbInfo->vgHash && NULL == dbInfo->vgArray) {
+    dbInfo->vgArray = taosArrayInit(100, sizeof(SVgroupInfo));
+    if (NULL == dbInfo->vgArray) {
+      CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+    }
+    
+    void*   pIter = taosHashIterate(dbInfo->vgHash, NULL);
+    while (pIter) {
+      taosArrayPush(dbInfo->vgArray, pIter);
+      pIter = taosHashIterate(dbInfo->vgHash, pIter);
+    }
+    
+    taosArraySort(dbInfo->vgArray, ctgVgInfoComp);
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 int32_t ctgCloneVgInfo(SDBVgInfo* src, SDBVgInfo** dst) {
+  CTG_ERR_RET(ctgMakeVgArray(src));
+
   *dst = taosMemoryMalloc(sizeof(SDBVgInfo));
   if (NULL == *dst) {
     qError("malloc %d failed", (int32_t)sizeof(SDBVgInfo));
diff --git a/source/libs/qcom/src/queryUtil.c b/source/libs/qcom/src/queryUtil.c
index 6eadf80e3d3ee8d44668f01a4a7dbb47d70c2c05..96e02c364334615a7b5d62368008cb38f66bfe45 100644
--- a/source/libs/qcom/src/queryUtil.c
+++ b/source/libs/qcom/src/queryUtil.c
@@ -447,6 +447,19 @@ int32_t cloneTableMeta(STableMeta* pSrc, STableMeta** pDst) {
   return TSDB_CODE_SUCCESS;
 }
 
+
+void freeVgInfo(SDBVgInfo* vgInfo) {
+  if (NULL == vgInfo) {
+    return;
+  }
+
+  taosHashCleanup(vgInfo->vgHash);
+  taosArrayDestroy(vgInfo->vgArray);
+
+  taosMemoryFreeClear(vgInfo);
+}
+
+
 int32_t cloneDbVgInfo(SDBVgInfo* pSrc, SDBVgInfo** pDst) {
   if (NULL == pSrc) {
     *pDst = NULL;
@@ -475,8 +488,7 @@ int32_t cloneDbVgInfo(SDBVgInfo* pSrc, SDBVgInfo** pDst) {
       if (0 != taosHashPut((*pDst)->vgHash, vgId, sizeof(*vgId), vgInfo, sizeof(*vgInfo))) {
         qError("taosHashPut failed, vgId:%d", vgInfo->vgId);
         taosHashCancelIterate(pSrc->vgHash, pIter);
-        taosHashCleanup((*pDst)->vgHash);
-        taosMemoryFreeClear(*pDst);
+        freeVgInfo(*pDst);
         return TSDB_CODE_OUT_OF_MEMORY;
       }