diff --git a/source/client/src/clientEnv.c b/source/client/src/clientEnv.c
index 6689334c1e..3a821768f8 100644
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@@ -157,7 +157,10 @@ static void generateWriteSlowLog(STscObj *pTscObj, SRequestObj *pRequest, int32_
   }
 
   char* value = cJSON_PrintUnformatted(json);
-  MonitorSlowLogData data = {.clusterId = pTscObj->pAppInfo->clusterId, .type = SLOW_LOG_WRITE, .data = value};
+  MonitorSlowLogData data = {0};
+  data.clusterId = pTscObj->pAppInfo->clusterId;
+  data.type = SLOW_LOG_WRITE;
+  data.data = value;
   if(monitorPutData2MonitorQueue(data) < 0){
     taosMemoryFree(value);
   }
diff --git a/source/client/src/clientHb.c b/source/client/src/clientHb.c
index 07a9e0c463..81c9e1252f 100644
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@@ -547,7 +547,6 @@ static int32_t hbAsyncCallBack(void *param, SDataBuf *pMsg, int32_t code) {
   }
 
   SAppInstInfo *pInst = pAppHbMgr->pAppInstInfo;
-  int32_t oldInterval = pInst->monitorParas.tsMonitorInterval;
   pInst->monitorParas = pRsp.monitorParas;
   tscDebug("[monitor] paras from hb, clusterId:%" PRIx64 " monitorParas threshold:%d scope:%d",
            pInst->clusterId, pRsp.monitorParas.tsSlowLogThreshold, pRsp.monitorParas.tsSlowLogScope);
diff --git a/source/client/src/clientMsgHandler.c b/source/client/src/clientMsgHandler.c
index 43600f60e1..e5baa7137e 100644
--- a/source/client/src/clientMsgHandler.c
+++ b/source/client/src/clientMsgHandler.c
@@ -155,7 +155,9 @@ int32_t processConnectRsp(void* param, SDataBuf* pMsg, int32_t code) {
     if(taosHashPut(appInfo.pInstMapByClusterId, &connectRsp.clusterId, LONG_BYTES, &pTscObj->pAppInfo, POINTER_BYTES) != 0){
       tscError("failed to put appInfo into appInfo.pInstMapByClusterId");
     }
-    MonitorSlowLogData data ={.clusterId = pTscObj->pAppInfo->clusterId, .type = SLOW_LOG_READ_BEGINNIG, .pFile = NULL, .data = NULL};
+    MonitorSlowLogData data = {0};
+    data.clusterId = pTscObj->pAppInfo->clusterId;
+    data.type = SLOW_LOG_READ_BEGINNIG;
     monitorPutData2MonitorQueue(data);
     monitorClientSlowQueryInit(connectRsp.clusterId);
     monitorClientSQLReqInit(connectRsp.clusterId);