diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index 8aefb0ca12..6bde604620 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -2166,12 +2166,11 @@ static void cliSchedMsgToNextNode(SCliMsg* pMsg, SCliThrd* pThrd) {
 
   if (rpcDebugFlag & DEBUG_DEBUG) {
     STraceId* trace = &pMsg->msg.info.traceId;
-    char*     tbuf = taosMemoryCalloc(1, TSDB_FQDN_LEN * 5);
+    char      tbuf[512] = {0};
 
     EPSET_DEBUG_STR(&pCtx->epSet, tbuf);
     tGDebug("%s retry on next node,use:%s, step: %d,timeout:%" PRId64 "", transLabel(pThrd->pTransInst), tbuf,
             pCtx->retryStep, pCtx->retryNextInterval);
-    taosMemoryFree(tbuf);
   }
 
   STaskArg* arg = taosMemoryMalloc(sizeof(STaskArg));
@@ -2397,9 +2396,9 @@ int cliAppCb(SCliConn* pConn, STransMsg* pResp, SCliMsg* pMsg) {
   bool      hasEpSet = cliTryExtractEpSet(pResp, &pCtx->epSet);
   if (hasEpSet) {
     if (rpcDebugFlag & DEBUG_TRACE) {
-      char tbuf[256] = {0};
+      char tbuf[512] = {0};
       EPSET_DEBUG_STR(&pCtx->epSet, tbuf);
-      tGTrace("%s conn %p extract epset from msg", CONN_GET_INST_LABEL(pConn), pConn);
+      tGTrace("%s conn %p extract epset from msg, use:%s", CONN_GET_INST_LABEL(pConn), pConn, tbuf);
     }
   }
   if (rpcDebugFlag & DEBUG_TRACE) {