diff --git a/CMakeLists.txt b/CMakeLists.txt
index 71cb0bfd437c9888d6518bc83cfde607b707db4c..9c446b19a548e2f2f84d147d59327bee66d56caa 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -141,12 +141,12 @@ IF (NOT DEFINED TD_CLUSTER)
     SET(RELEASE_FLAGS "-O0")
     IF (NOT TD_ARM)
       IF (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
-        SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -malign-double -g -Wno-char-subscripts -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+        SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -malign-double -g -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
       ELSE ()
-        SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -malign-double -g -Wno-char-subscripts -malign-stringops -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+        SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -malign-double -g -malign-stringops -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
       ENDIF ()
     ELSE ()
-      SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -g -Wno-char-subscripts -fsigned-char -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+      SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -g -fsigned-char -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
     ENDIF ()
     ADD_DEFINITIONS(-DLINUX)
     ADD_DEFINITIONS(-D_REENTRANT -D__USE_POSIX -D_LIBC_REENTRANT)
@@ -156,7 +156,7 @@ IF (NOT DEFINED TD_CLUSTER)
     ENDIF ()
     SET(DEBUG_FLAGS "-O0 -DDEBUG")
     SET(RELEASE_FLAGS "-O0")
-    SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -g -Wno-char-subscripts -fsigned-char -munaligned-access -fpack-struct=8 -latomic -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+    SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -g -fsigned-char -munaligned-access -fpack-struct=8 -latomic -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
     ADD_DEFINITIONS(-DLINUX)
     ADD_DEFINITIONS(-D_REENTRANT -D__USE_POSIX -D_LIBC_REENTRANT)
     ADD_DEFINITIONS(-DUSE_LIBICONV)
@@ -171,7 +171,7 @@ IF (NOT DEFINED TD_CLUSTER)
     ADD_DEFINITIONS(-DPTW32_BUILD)
     ADD_DEFINITIONS(-D_MBCS -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
   ELSEIF (TD_DARWIN_64)
-    SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -malign-double -g -Wno-char-subscripts -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE -Wno-unused-variable -Wno-bitfield-constant-conversion")
+    SET(COMMON_FLAGS "-std=gnu99 -Wall -fPIC -malign-double -g -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
     SET(DEBUG_FLAGS "-O0 -DDEBUG")
     SET(RELEASE_FLAGS "-O0")
     ADD_DEFINITIONS(-DDARWIN)
diff --git a/src/client/src/TSDBJNIConnector.c b/src/client/src/TSDBJNIConnector.c
index 71f983dadbe243e78330ea7f8d361bb5712f449e..e27313a968b1aa8e9a4c38f49c3d5312b12137d4 100644
--- a/src/client/src/TSDBJNIConnector.c
+++ b/src/client/src/TSDBJNIConnector.c
@@ -239,7 +239,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_executeQueryImp(J
                                                                                jbyteArray jsql, jlong con) {
   TAOS *tscon = (TAOS *)con;
   if (tscon == NULL) {
-    jniError("jobj:%p, connection is closed", jobj);
+    jniError("jobj:%p, connection is already closed", jobj);
     return JNI_CONNECTION_NULL;
   }
 
@@ -252,6 +252,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_executeQueryImp(J
 
   char *dst = (char *)calloc(1, sizeof(char) * (len + 1));
   if (dst == NULL) {
+    jniError("jobj:%p, conn:%p, can not alloc memory", jobj, tscon);
     return JNI_OUT_OF_MEMORY;
   }
 
@@ -260,6 +261,8 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_executeQueryImp(J
     //todo handle error
   }
 
+  jniTrace("jobj:%p, conn:%p, sql:%s", jobj, tscon, sql);
+
   int code = taos_query(tscon, dst);
   if (code != 0) {
     jniError("jobj:%p, conn:%p, code:%d, msg:%s, sql:%s", jobj, tscon, code, taos_errstr(tscon), dst);
@@ -271,9 +274,9 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_executeQueryImp(J
 
     if (pSql->cmd.command == TSDB_SQL_INSERT) {
       affectRows = taos_affected_rows(tscon);
-      jniTrace("jobj:%p, conn:%p, code:%d, affect rows:%d, sql:%s", jobj, tscon, code, affectRows, dst);
+      jniTrace("jobj:%p, conn:%p, code:%d, affect rows:%d", jobj, tscon, code, affectRows, dst);
     } else {
-      jniTrace("jobj:%p, conn:%p, code:%d, sql:%s", jobj, tscon, code, dst);
+      jniTrace("jobj:%p, conn:%p, code:%d", jobj, tscon, code, dst);
     }
 
     free(dst);
@@ -307,7 +310,7 @@ JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_getResultSetImp(
 
   if (tscIsUpdateQuery(tscon)) {
     ret = 0;  // for update query, no result pointer
-    jniTrace("jobj:%p, conn:%p, no result", jobj, tscon);
+    jniTrace("jobj:%p, conn:%p, no resultset", jobj, tscon);
   } else {
     ret = (jlong) taos_use_result(tscon);
     jniTrace("jobj:%p, conn:%p, get resultset:%p", jobj, tscon, (void *) ret);
@@ -496,7 +499,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_closeConnectionIm
                                                                                   jlong con) {
   TAOS *tscon = (TAOS *)con;
   if (tscon == NULL) {
-    jniError("jobj:%p, connection is closed", jobj);
+    jniError("jobj:%p, connection is already closed", jobj);
     return JNI_CONNECTION_NULL;
   } else {
     jniTrace("jobj:%p, conn:%p, close connection success", jobj, tscon);
diff --git a/src/modules/http/src/httpHandle.c b/src/modules/http/src/httpHandle.c
index c736825b3750d67a92dd43624ab4383ae1f1af34..b46fa11cde6cdf93bba737ccbc223f0f9de910be 100644
--- a/src/modules/http/src/httpHandle.c
+++ b/src/modules/http/src/httpHandle.c
@@ -279,8 +279,7 @@ bool httpReadChunkedBody(HttpContext* pContext, HttpParser* pParser) {
     httpParseChunkedBody(pContext, pParser, false);
     return HTTP_CHECK_BODY_SUCCESS;
   } else {
-    httpTrace("context:%p, fd:%d, ip:%s, chunked body not finished, continue read", pContext, pContext->fd,
-              pContext->ipstr);
+    httpTrace("context:%p, fd:%d, ip:%s, chunked body not finished, continue read", pContext, pContext->fd, pContext->ipstr);
     if (!httpReadDataImp(pContext)) {
       httpError("context:%p, fd:%d, ip:%s, read chunked request error", pContext, pContext->fd, pContext->ipstr);
       return HTTP_CHECK_BODY_ERROR;
diff --git a/src/modules/http/src/httpServer.c b/src/modules/http/src/httpServer.c
index 01d3ef40f2d5a82821842e0b27c2e648d52bf237..232119b32a741e66fb3aee4d78f5df83d2a029d3 100644
--- a/src/modules/http/src/httpServer.c
+++ b/src/modules/http/src/httpServer.c
@@ -101,7 +101,7 @@ void httpFreeContext(HttpServer *pServer, HttpContext *pContext) {
 void httpCleanUpContextTimer(HttpContext *pContext) {
   if (pContext->timer != NULL) {
     taosTmrStopA(&pContext->timer);
-    httpTrace("context:%p, ip:%s, close timer:%p", pContext, pContext->ipstr, pContext->timer);
+    //httpTrace("context:%p, ip:%s, close timer:%p", pContext, pContext->ipstr, pContext->timer);
     pContext->timer = NULL;
   }
 }
@@ -329,8 +329,6 @@ bool httpReadDataImp(HttpContext *pContext) {
   }
 
   pParser->buffer[pParser->bufsize] = 0;
-  httpTrace("context:%p, fd:%d, ip:%s, thread:%s, read size:%d",
-            pContext, pContext->fd, pContext->ipstr, pContext->pThread->label, pParser->bufsize);
 
   return true;
 }
@@ -383,10 +381,12 @@ bool httpReadData(HttpThread *pThread, HttpContext *pContext) {
   int ret = httpCheckReadCompleted(pContext);
   if (ret == HTTP_CHECK_BODY_CONTINUE) {
     taosTmrReset(httpCloseContextByServerForExpired, HTTP_EXPIRED_TIME, pContext, pThread->pServer->timerHandle, &pContext->timer);
-    httpTrace("context:%p, fd:%d, ip:%s, not finished yet, try another times, timer:%p", pContext, pContext->fd, pContext->ipstr, pContext->timer);
+    //httpTrace("context:%p, fd:%d, ip:%s, not finished yet, try another times, timer:%p", pContext, pContext->fd, pContext->ipstr, pContext->timer);
     return false;
   } else if (ret == HTTP_CHECK_BODY_SUCCESS){
     httpCleanUpContextTimer(pContext);
+    httpTrace("context:%p, fd:%d, ip:%s, thread:%s, read size:%d, dataLen:%d",
+              pContext, pContext->fd, pContext->ipstr, pContext->pThread->label, pContext->parser.bufsize, pContext->parser.data.len);
     if (httpDecompressData(pContext)) {
       return true;
     } else {