diff --git a/include/libs/qcom/query.h b/include/libs/qcom/query.h
index 6b1f2903a3..a30f3be7a1 100644
--- a/include/libs/qcom/query.h
+++ b/include/libs/qcom/query.h
@@ -191,7 +191,7 @@ extern int32_t (*queryProcessMsgRsp[TDMT_MAX])(void* output, char* msg, int32_t
 #define NEED_CLIENT_RM_TBLMETA_ERROR(_code)                                                   \
   ((_code) == TSDB_CODE_PAR_TABLE_NOT_EXIST || (_code) == TSDB_CODE_VND_TB_NOT_EXIST ||       \
    (_code) == TSDB_CODE_PAR_INVALID_COLUMNS_NUM || (_code) == TSDB_CODE_PAR_INVALID_COLUMN || \
-   (_code) == TSDB_CODE_PAR_TAGS_NOT_MATCHED)
+   (_code) == TSDB_CODE_PAR_TAGS_NOT_MATCHED || (_code == TSDB_CODE_PAR_VALUE_TOO_LONG))
 #define NEED_CLIENT_REFRESH_VG_ERROR(_code) \
   ((_code) == TSDB_CODE_VND_HASH_MISMATCH || (_code) == TSDB_CODE_VND_INVALID_VGROUP_ID)
 #define NEED_CLIENT_REFRESH_TBLMETA_ERROR(_code) ((_code) == TSDB_CODE_TDB_TABLE_RECREATED)
diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index 0ba1d0c0f2..a924719cf9 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -641,6 +641,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_PAR_NOT_ALLOWED_WIN_QUERY     TAOS_DEF_ERROR_CODE(0, 0x2650)
 #define TSDB_CODE_PAR_INVALID_DROP_COL          TAOS_DEF_ERROR_CODE(0, 0x2651)
 #define TSDB_CODE_PAR_INVALID_COL_JSON          TAOS_DEF_ERROR_CODE(0, 0x2652)
+#define TSDB_CODE_PAR_VALUE_TOO_LONG            TAOS_DEF_ERROR_CODE(0, 0x2653)
 
 //planner
 #define TSDB_CODE_PLAN_INTERNAL_ERROR           TAOS_DEF_ERROR_CODE(0, 0x2700)
diff --git a/source/common/src/ttime.c b/source/common/src/ttime.c
index 69ba964187..38ad948981 100644
--- a/source/common/src/ttime.c
+++ b/source/common/src/ttime.c
@@ -184,6 +184,16 @@ int32_t parseTimezone(char* str, int64_t* tzOffset) {
 
   i++;
 
+  int32_t j = i;
+  while (str[j]) {
+    if ((str[j] >= '0' && str[j] <= '9') || str[j] == ':') {
+      ++j;
+      continue;
+    }
+
+    return -1;
+  }
+
   char* sep = strchr(&str[i], ':');
   if (sep != NULL) {
     int32_t len = (int32_t)(sep - &str[i]);
diff --git a/source/libs/parser/src/parInsert.c b/source/libs/parser/src/parInsert.c
index b5d97a80e5..49e52d873f 100644
--- a/source/libs/parser/src/parInsert.c
+++ b/source/libs/parser/src/parInsert.c
@@ -610,7 +610,7 @@ static int32_t parseValueToken(char** end, SToken* pToken, SSchema* pSchema, int
     case TSDB_DATA_TYPE_BINARY: {
       // Too long values will raise the invalid sql error message
       if (pToken->n + VARSTR_HEADER_SIZE > pSchema->bytes) {
-        return buildSyntaxErrMsg(pMsgBuf, "string data overflow", pToken->z);
+        return generateSyntaxErrMsg(pMsgBuf, TSDB_CODE_PAR_VALUE_TOO_LONG, pSchema->name);
       }
 
       return func(pMsgBuf, pToken->z, pToken->n, param);
@@ -658,6 +658,9 @@ static FORCE_INLINE int32_t MemRowAppend(SMsgBuf* pMsgBuf, const void* value, in
     int32_t     output = 0;
     const char* rowEnd = tdRowEnd(rb->pBuf);
     if (!taosMbsToUcs4(value, len, (TdUcs4*)varDataVal(rowEnd), pa->schema->bytes - VARSTR_HEADER_SIZE, &output)) {
+      if (errno == E2BIG) {
+        return generateSyntaxErrMsg(pMsgBuf, TSDB_CODE_PAR_VALUE_TOO_LONG, pa->schema->name);
+      }
       char buf[512] = {0};
       snprintf(buf, tListLen(buf), "%s", strerror(errno));
       return buildSyntaxErrMsg(pMsgBuf, buf, value);
@@ -771,6 +774,10 @@ static int32_t KvRowAppend(SMsgBuf* pMsgBuf, const void* value, int32_t len, voi
     // if the converted output len is over than pColumnModel->bytes, return error: 'Argument list too long'
     int32_t output = 0;
     if (!taosMbsToUcs4(value, len, (TdUcs4*)varDataVal(pa->buf), pa->schema->bytes - VARSTR_HEADER_SIZE, &output)) {
+      if (errno == E2BIG) {
+        return generateSyntaxErrMsg(pMsgBuf, TSDB_CODE_PAR_VALUE_TOO_LONG, pa->schema->name);
+      }
+    
       char buf[512] = {0};
       snprintf(buf, tListLen(buf), " taosMbsToUcs4 error:%s", strerror(errno));
       return buildSyntaxErrMsg(pMsgBuf, buf, value);
diff --git a/source/libs/parser/src/parUtil.c b/source/libs/parser/src/parUtil.c
index 652ed10ce8..ff206c1a76 100644
--- a/source/libs/parser/src/parUtil.c
+++ b/source/libs/parser/src/parUtil.c
@@ -173,6 +173,8 @@ static char* getSyntaxErrFormat(int32_t errCode) {
       return "No columns can be dropped";
     case TSDB_CODE_PAR_INVALID_COL_JSON:
       return "Only tag can be json type";
+    case TSDB_CODE_PAR_VALUE_TOO_LONG:
+      return "Value too long for column/tag: %s";
     case TSDB_CODE_OUT_OF_MEMORY:
       return "Out of memory";
     default:
diff --git a/source/libs/scheduler/src/schRemote.c b/source/libs/scheduler/src/schRemote.c
index 947a4fd1f2..e9017b937d 100644
--- a/source/libs/scheduler/src/schRemote.c
+++ b/source/libs/scheduler/src/schRemote.c
@@ -440,6 +440,7 @@ int32_t schHandleExplainCallback(void *param, const SDataBuf *pMsg, int32_t code
 int32_t schHandleDropCallback(void *param, const SDataBuf *pMsg, int32_t code) {
   SSchTaskCallbackParam *pParam = (SSchTaskCallbackParam *)param;
   qDebug("QID:%" PRIx64 ",TID:%" PRIx64 " drop task rsp received, code:%x", pParam->queryId, pParam->taskId, code);
+  taosMemoryFreeClear(param);
   return TSDB_CODE_SUCCESS;
 }