diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index bd3ca6ae8d6239efc70b6379e9a18c69fb69d788..6811b29d4788d57a9fda397d17df566cd8d3c9f5 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -1987,19 +1987,16 @@ static FORCE_INLINE void tFreeClientHbReq(void* pReq) {
   if (req->info) {
     tFreeReqKvHash(req->info);
     taosHashCleanup(req->info);
+    req->info = NULL;
   }
 }
 
 int32_t tSerializeSClientHbBatchReq(void* buf, int32_t bufLen, const SClientHbBatchReq* pReq);
 int32_t tDeserializeSClientHbBatchReq(void* buf, int32_t bufLen, SClientHbBatchReq* pReq);
 
-static FORCE_INLINE void tFreeClientHbBatchReq(void* pReq, bool deep) {
+static FORCE_INLINE void tFreeClientHbBatchReq(void* pReq) {
   SClientHbBatchReq* req = (SClientHbBatchReq*)pReq;
-  if (deep) {
-    taosArrayDestroyEx(req->reqs, tFreeClientHbReq);
-  } else {
-    taosArrayDestroy(req->reqs);
-  }
+  taosArrayDestroyEx(req->reqs, tFreeClientHbReq);
   taosMemoryFree(pReq);
 }
 
@@ -2023,6 +2020,7 @@ static FORCE_INLINE void tFreeClientHbBatchRsp(void* pRsp) {
 
 int32_t tSerializeSClientHbBatchRsp(void* buf, int32_t bufLen, const SClientHbBatchRsp* pBatchRsp);
 int32_t tDeserializeSClientHbBatchRsp(void* buf, int32_t bufLen, SClientHbBatchRsp* pBatchRsp);
+void tFreeSClientHbBatchRsp(SClientHbBatchRsp *pBatchRsp);
 
 static FORCE_INLINE int32_t tEncodeSKv(SEncoder* pEncoder, const SKv* pKv) {
   if (tEncodeI32(pEncoder, pKv->key) < 0) return -1;
diff --git a/source/client/src/clientHb.c b/source/client/src/clientHb.c
index 13ac43bc392d14407bfc04b494f4e5d49a3f1fa3..b068e13b7d819230c2cf09cdf267b2d7dcee7cde 100644
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@@ -394,6 +394,10 @@ int32_t hbGetExpiredUserInfo(SClientHbKey *connKey, struct SCatalog *pCatalog, S
 
   tscDebug("hb got %d expired users, valueLen:%d", userNum, kv.valueLen);
 
+  if (NULL == req->info) {
+    req->info = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
+  }
+  
   taosHashPut(req->info, &kv.key, sizeof(kv.key), &kv, sizeof(kv));
 
   return TSDB_CODE_SUCCESS;
@@ -429,6 +433,10 @@ int32_t hbGetExpiredDBInfo(SClientHbKey *connKey, struct SCatalog *pCatalog, SCl
 
   tscDebug("hb got %d expired db, valueLen:%d", dbNum, kv.valueLen);
 
+  if (NULL == req->info) {
+    req->info = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
+  }
+
   taosHashPut(req->info, &kv.key, sizeof(kv.key), &kv, sizeof(kv));
 
   return TSDB_CODE_SUCCESS;
@@ -463,6 +471,10 @@ int32_t hbGetExpiredStbInfo(SClientHbKey *connKey, struct SCatalog *pCatalog, SC
 
   tscDebug("hb got %d expired stb, valueLen:%d", stbNum, kv.valueLen);
 
+  if (NULL == req->info) {
+    req->info = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
+  }
+
   taosHashPut(req->info, &kv.key, sizeof(kv.key), &kv, sizeof(kv));
 
   return TSDB_CODE_SUCCESS;
@@ -511,16 +523,6 @@ static FORCE_INLINE void hbMgrInitHandle() {
   hbMgrInitMqHbHandle();
 }
 
-void hbFreeReq(void *req) {
-  SClientHbReq *pReq = (SClientHbReq *)req;
-  tFreeReqKvHash(pReq->info);
-}
-
-void hbClearClientHbReq(SClientHbReq *pReq) {
-  pReq->query = NULL;
-  pReq->info = NULL;
-}
-
 SClientHbBatchReq *hbGatherAllInfo(SAppHbMgr *pAppHbMgr) {
   SClientHbBatchReq *pBatchReq = taosMemoryCalloc(1, sizeof(SClientHbBatchReq));
   if (pBatchReq == NULL) {
@@ -535,6 +537,8 @@ SClientHbBatchReq *hbGatherAllInfo(SAppHbMgr *pAppHbMgr) {
   while (pIter != NULL) {
     SClientHbReq *pOneReq = pIter;
 
+    pOneReq = taosArrayPush(pBatchReq->reqs, pOneReq);
+
     SHbConnInfo *info = taosHashGet(pAppHbMgr->connInfo, &pOneReq->connKey, sizeof(SClientHbKey));
     if (info) {
       code = (*clientHbMgr.reqHandle[pOneReq->connKey.connType])(&pOneReq->connKey, info->param, pOneReq);
@@ -544,7 +548,6 @@ SClientHbBatchReq *hbGatherAllInfo(SAppHbMgr *pAppHbMgr) {
       }
     }
 
-    taosArrayPush(pBatchReq->reqs, pOneReq);
     //hbClearClientHbReq(pOneReq);
 
     pIter = taosHashIterate(pAppHbMgr->activeInfo, pIter);
@@ -601,8 +604,8 @@ static void *hbThreadFunc(void *param) {
       void *buf = taosMemoryMalloc(tlen);
       if (buf == NULL) {
         terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
-        tFreeClientHbBatchReq(pReq, false);
-        hbClearReqInfo(pAppHbMgr);
+        tFreeClientHbBatchReq(pReq);
+        //hbClearReqInfo(pAppHbMgr);
         break;
       }
 
@@ -611,8 +614,8 @@ static void *hbThreadFunc(void *param) {
 
       if (pInfo == NULL) {
         terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
-        tFreeClientHbBatchReq(pReq, false);
-        hbClearReqInfo(pAppHbMgr);
+        tFreeClientHbBatchReq(pReq);
+        //hbClearReqInfo(pAppHbMgr);
         taosMemoryFree(buf);
         break;
       }
@@ -628,8 +631,8 @@ static void *hbThreadFunc(void *param) {
       int64_t       transporterId = 0;
       SEpSet        epSet = getEpSet_s(&pAppInstInfo->mgmtEp);
       asyncSendMsgToServer(pAppInstInfo->pTransporter, &epSet, &transporterId, pInfo);
-      tFreeClientHbBatchReq(pReq, false);
-      hbClearReqInfo(pAppHbMgr);
+      tFreeClientHbBatchReq(pReq);
+      //hbClearReqInfo(pAppHbMgr);
 
       atomic_add_fetch_32(&pAppHbMgr->reportCnt, 1);
     }
@@ -721,8 +724,7 @@ void appHbMgrCleanup(void) {
     void *pIter = taosHashIterate(pTarget->activeInfo, NULL);
     while (pIter != NULL) {
       SClientHbReq *pOneReq = pIter;
-      hbFreeReq(pOneReq);
-      taosHashCleanup(pOneReq->info);
+      tFreeClientHbReq(pOneReq);
       pIter = taosHashIterate(pTarget->activeInfo, pIter);
     }
     taosHashCleanup(pTarget->activeInfo);
@@ -782,7 +784,7 @@ int hbRegisterConnImpl(SAppHbMgr *pAppHbMgr, SClientHbKey connKey, SHbConnInfo *
   }
   SClientHbReq hbReq = {0};
   hbReq.connKey = connKey;
-  hbReq.info = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
+  //hbReq.info = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
 
   taosHashPut(pAppHbMgr->activeInfo, &connKey, sizeof(SClientHbKey), &hbReq, sizeof(SClientHbReq));
 
@@ -823,8 +825,7 @@ int hbRegisterConn(SAppHbMgr *pAppHbMgr, int64_t tscRefId, int64_t clusterId, in
 void hbDeregisterConn(SAppHbMgr *pAppHbMgr, SClientHbKey connKey) {
   SClientHbReq *pReq = taosHashGet(pAppHbMgr->activeInfo, &connKey, sizeof(SClientHbKey));
   if (pReq) {
-    hbFreeReq(pReq);
-    taosHashCleanup(pReq->info);
+    tFreeClientHbReq(pReq);
     taosHashRemove(pAppHbMgr->activeInfo, &connKey, sizeof(SClientHbKey));
   }
 
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 8a03043a996ef8759c7094d31dc25e01e6838dab..8c7e7cef98a3e32a7aff907e4ee788966fb4ecad 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -387,7 +387,7 @@ _return:
 }
 
 void freeRequestRes(SRequestObj* pRequest, void* res) {
-  if (NULL == res) {
+  if (NULL == pRequest || NULL == res) {
     return;
   }
 
@@ -435,12 +435,13 @@ SRequestObj* launchQueryImpl(SRequestObj* pRequest, SQuery* pQuery, int32_t code
 
   if (NULL != pRequest && TSDB_CODE_SUCCESS != code) {
     pRequest->code = terrno;
-    freeRequestRes(pRequest, pRes);
-    pRes = NULL;
   }
 
   if (res) {
     *res = pRes;
+  } else {
+    freeRequestRes(pRequest, pRes);
+    pRes = NULL;
   }
 
   return pRequest;
diff --git a/source/client/src/clientStmt.c b/source/client/src/clientStmt.c
index a9b4e234e8ca1d09560a5d39a37483b18a8431d6..17468584822361d8a3f7ff048cb797a8174b1836 100644
--- a/source/client/src/clientStmt.c
+++ b/source/client/src/clientStmt.c
@@ -800,6 +800,7 @@ int stmtExec(TAOS_STMT* stmt) {
     if (code) {
       pStmt->exec.pRequest->code = code;
     } else {
+      tFreeSSubmitRsp(pRsp);
       STMT_ERR_RET(stmtResetStmt(pStmt));
       STMT_ERR_RET(TSDB_CODE_NEED_RETRY);
     }
@@ -817,11 +818,13 @@ _return:
   if (TSDB_CODE_SUCCESS == code && autoCreateTbl) {
     if (NULL == pRsp) {
       tscError("no submit resp got for auto create table");
-      STMT_ERR_RET(TSDB_CODE_TSC_APP_ERROR);
+      code = TSDB_CODE_TSC_APP_ERROR;
+    } else {
+      code = stmtUpdateTableUid(pStmt, pRsp);
     }
-
-    STMT_ERR_RET(stmtUpdateTableUid(pStmt, pRsp));
   }
+  
+  tFreeSSubmitRsp(pRsp);
 
   ++pStmt->sql.runTimes;
 
diff --git a/source/dnode/mnode/impl/src/mndProfile.c b/source/dnode/mnode/impl/src/mndProfile.c
index cd57e76b2cc6eacee39be027563d52d04a1ea038..b9ac82d890a12f2355834f415f4bbca65461873b 100644
--- a/source/dnode/mnode/impl/src/mndProfile.c
+++ b/source/dnode/mnode/impl/src/mndProfile.c
@@ -128,7 +128,8 @@ static SConnObj *mndCreateConn(SMnode *pMnode, const char *user, int8_t connType
 }
 
 static void mndFreeConn(SConnObj *pConn) {
-  taosMemoryFreeClear(pConn->pQueries);
+  taosArrayDestroyEx(pConn->pQueries, tFreeClientHbQueryDesc);
+  
   mTrace("conn:%u, is destroyed, data:%p", pConn->id, pConn);
 }
 
@@ -396,6 +397,7 @@ static int32_t mndProcessQueryHeartBeat(SMnode *pMnode, SRpcMsg *pMsg, SClientHb
   if (NULL == hbRsp.info) {
     mError("taosArrayInit %d rsp kv failed", kvNum);
     terrno = TSDB_CODE_OUT_OF_MEMORY;
+    tFreeClientHbRsp(&hbRsp);
     return -1;
   }
 
@@ -453,6 +455,7 @@ static int32_t mndProcessHeartBeatReq(SRpcMsg *pReq) {
 
   SClientHbBatchReq batchReq = {0};
   if (tDeserializeSClientHbBatchReq(pReq->pCont, pReq->contLen, &batchReq) != 0) {
+    taosArrayDestroyEx(batchReq.reqs, tFreeClientHbReq);
     terrno = TSDB_CODE_INVALID_MSG;
     return -1;
   }
@@ -479,18 +482,7 @@ static int32_t mndProcessHeartBeatReq(SRpcMsg *pReq) {
   void   *buf = rpcMallocCont(tlen);
   tSerializeSClientHbBatchRsp(buf, tlen, &batchRsp);
 
-  int32_t rspNum = (int32_t)taosArrayGetSize(batchRsp.rsps);
-  for (int32_t i = 0; i < rspNum; ++i) {
-    SClientHbRsp *rsp = taosArrayGet(batchRsp.rsps, i);
-    int32_t       kvNum = (rsp->info) ? taosArrayGetSize(rsp->info) : 0;
-    for (int32_t n = 0; n < kvNum; ++n) {
-      SKv *kv = taosArrayGet(rsp->info, n);
-      taosMemoryFreeClear(kv->value);
-    }
-    taosArrayDestroy(rsp->info);
-  }
-
-  taosArrayDestroy(batchRsp.rsps);
+  tFreeClientHbBatchRsp(&batchRsp);
   pReq->info.rspLen = tlen;
   pReq->info.rsp = buf;
 
diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index 7485510bc6f5db1873dced18e911adfe493a5d24..4ad92a541603af60d24f0f171f56aeb5265f56bd 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -1642,6 +1642,8 @@ int32_t mndValidateStbInfo(SMnode *pMnode, SSTableMetaVersion *pStbVersions, int
 
     if (pStbVersion->sversion != metaRsp.sversion) {
       taosArrayPush(batchMetaRsp.pArray, &metaRsp);
+    } else {
+      tFreeSTableMetaRsp(&metaRsp);
     }
   }
 
@@ -1660,6 +1662,7 @@ int32_t mndValidateStbInfo(SMnode *pMnode, SSTableMetaVersion *pStbVersions, int
   }
 
   tSerializeSTableMetaBatchRsp(pRsp, rspLen, &batchMetaRsp);
+  tFreeSTableMetaBatchRsp(&batchMetaRsp);
   *ppRsp = pRsp;
   *pRspLen = rspLen;
   return 0;
diff --git a/source/libs/parser/src/parInsert.c b/source/libs/parser/src/parInsert.c
index b4529506245b1b58b10959322595053382b228ee..6847d680d2712055f8828da6eb7b4215df76f2b1 100644
--- a/source/libs/parser/src/parInsert.c
+++ b/source/libs/parser/src/parInsert.c
@@ -1085,6 +1085,10 @@ static int32_t parseInsertBody(SInsertParseContext* pCxt) {
 
     // no data in the sql string anymore.
     if (sToken.n == 0) {
+      if (sToken.type && pCxt->pSql[0]) {
+        return buildSyntaxErrMsg(&pCxt->msg, "invalid charactor in SQL", sToken.z);
+      }
+      
       if (0 == pCxt->totalNum && (!TSDB_QUERY_HAS_TYPE(pCxt->pOutput->insertType, TSDB_QUERY_TYPE_STMT_INSERT))) {
         return buildInvalidOperationMsg(&pCxt->msg, "no data in sql");
       }
diff --git a/source/libs/parser/src/parTokenizer.c b/source/libs/parser/src/parTokenizer.c
index abc7ddb17f4b6ea4cd9a859637fe3886dffa21fc..8fb9780f8a5b52c62822c25eb1b52be40d30c1d9 100644
--- a/source/libs/parser/src/parTokenizer.c
+++ b/source/libs/parser/src/parTokenizer.c
@@ -704,6 +704,7 @@ SToken tStrGetToken(const char* str, int32_t* i, bool isPrevOptr) {
 
   if (t0.type == TK_NK_SEMI) {
     t0.n = 0;
+    t0.type = 0;
     return t0;
   }