diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index fa89ca917a..9301b31f95 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -1054,10 +1054,10 @@ typedef struct {
   int8_t enable;
   int8_t isView;
   union {
-    int8_t flag;
+    uint8_t flag;
     struct {
-      int8_t createdb : 1;
-      int8_t reserve : 7;
+      uint8_t createdb : 1;
+      uint8_t reserve : 7;
     };
   };
   char        user[TSDB_USER_LEN];
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index d465e24d5b..1cbd646413 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -1813,7 +1813,7 @@ int32_t tSerializeSAlterUserReq(void *buf, int32_t bufLen, SAlterUserReq *pReq)
   }
   if (tEncodeI64(&encoder, pReq->privileges) < 0) return -1;
   ENCODESQL();
-  if (tEncodeI8(&encoder, pReq->flag) < 0) return -1;
+  if (tEncodeU8(&encoder, pReq->flag) < 0) return -1;
   tEndEncode(&encoder);
 
   int32_t tlen = encoder.pos;
@@ -1854,7 +1854,7 @@ int32_t tDeserializeSAlterUserReq(void *buf, int32_t bufLen, SAlterUserReq *pReq
   if (tDecodeI64(&decoder, &pReq->privileges) < 0) return -1;
   DECODESQL();
   if (!tDecodeIsEnd(&decoder)) {
-    if (tDecodeI8(&decoder, &pReq->flag) < 0) return -1;
+    if (tDecodeU8(&decoder, &pReq->flag) < 0) return -1;
   }
   tEndDecode(&decoder);
 
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index b6fc24a910..46e606d3ea 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -332,10 +332,10 @@ typedef struct {
   int8_t  sysInfo;
   int8_t  enable;
   union {
-    int8_t flag;
+    uint8_t flag;
     struct {
-      int8_t createdb : 1;
-      int8_t reserve : 7;
+      uint8_t createdb : 1;
+      uint8_t reserve : 7;
     };
   };
   int32_t       acctId;
diff --git a/source/dnode/mnode/impl/src/mndUser.c b/source/dnode/mnode/impl/src/mndUser.c
index 9a85d405ca..7cde8c5508 100644
--- a/source/dnode/mnode/impl/src/mndUser.c
+++ b/source/dnode/mnode/impl/src/mndUser.c
@@ -818,7 +818,7 @@ SSdbRaw *mndUserActionEncode(SUserObj *pUser) {
   SDB_SET_INT8(pRaw, dataPos, pUser->superUser, _OVER)
   SDB_SET_INT8(pRaw, dataPos, pUser->sysInfo, _OVER)
   SDB_SET_INT8(pRaw, dataPos, pUser->enable, _OVER)
-  SDB_SET_INT8(pRaw, dataPos, pUser->flag, _OVER)
+  SDB_SET_UINT8(pRaw, dataPos, pUser->flag, _OVER)
   SDB_SET_INT32(pRaw, dataPos, pUser->authVersion, _OVER)
   SDB_SET_INT32(pRaw, dataPos, pUser->passVersion, _OVER)
   SDB_SET_INT32(pRaw, dataPos, numOfReadDbs, _OVER)
@@ -1002,7 +1002,7 @@ static SSdbRow *mndUserActionDecode(SSdbRaw *pRaw) {
   SDB_GET_INT8(pRaw, dataPos, &pUser->superUser, _OVER)
   SDB_GET_INT8(pRaw, dataPos, &pUser->sysInfo, _OVER)
   SDB_GET_INT8(pRaw, dataPos, &pUser->enable, _OVER)
-  SDB_GET_INT8(pRaw, dataPos, &pUser->flag, _OVER)
+  SDB_GET_UINT8(pRaw, dataPos, &pUser->flag, _OVER)
   if (pUser->superUser) pUser->createdb = 1;
   SDB_GET_INT32(pRaw, dataPos, &pUser->authVersion, _OVER)
   if (sver >= 4) {
diff --git a/source/dnode/mnode/sdb/inc/sdb.h b/source/dnode/mnode/sdb/inc/sdb.h
index 0b2de2b151..fc9b89a141 100644
--- a/source/dnode/mnode/sdb/inc/sdb.h
+++ b/source/dnode/mnode/sdb/inc/sdb.h
@@ -57,6 +57,7 @@ extern "C" {
 #define SDB_GET_INT32(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt32, int32_t)
 #define SDB_GET_INT16(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt16, int16_t)
 #define SDB_GET_INT8(pData, dataPos, val, pos)  SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt8, int8_t)
+#define SDB_GET_UINT8(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawUInt8, uint8_t)
 
 #define SDB_GET_RESERVE(pRaw, dataPos, valLen, pos) \
   {                                                 \
@@ -76,6 +77,7 @@ extern "C" {
 #define SDB_SET_INT32(pRaw, dataPos, val, pos) SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawInt32, int32_t)
 #define SDB_SET_INT16(pRaw, dataPos, val, pos) SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawInt16, int16_t)
 #define SDB_SET_INT8(pRaw, dataPos, val, pos)  SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawInt8, int8_t)
+#define SDB_SET_UINT8(pRaw, dataPos, val, pos) SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawUInt8, uint8_t)
 
 #define SDB_SET_BINARY(pRaw, dataPos, val, valLen, pos)     \
   {                                                         \
@@ -388,6 +390,7 @@ void sdbGetCommitInfo(SSdb *pSdb, int64_t *index, int64_t *term, int64_t *config
 SSdbRaw *sdbAllocRaw(ESdbType type, int8_t sver, int32_t dataLen);
 void     sdbFreeRaw(SSdbRaw *pRaw);
 int32_t  sdbSetRawInt8(SSdbRaw *pRaw, int32_t dataPos, int8_t val);
+int32_t  sdbSetRawUInt8(SSdbRaw *pRaw, int32_t dataPos, uint8_t val);
 int32_t  sdbSetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t val);
 int32_t  sdbSetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t val);
 int32_t  sdbSetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t val);
@@ -395,6 +398,7 @@ int32_t  sdbSetRawBinary(SSdbRaw *pRaw, int32_t dataPos, const char *pVal, int32
 int32_t  sdbSetRawDataLen(SSdbRaw *pRaw, int32_t dataLen);
 int32_t  sdbSetRawStatus(SSdbRaw *pRaw, ESdbStatus status);
 int32_t  sdbGetRawInt8(SSdbRaw *pRaw, int32_t dataPos, int8_t *val);
+int32_t  sdbGetRawUInt8(SSdbRaw *pRaw, int32_t dataPos, uint8_t *val);
 int32_t  sdbGetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t *val);
 int32_t  sdbGetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t *val);
 int32_t  sdbGetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t *val);
diff --git a/source/dnode/mnode/sdb/src/sdbRaw.c b/source/dnode/mnode/sdb/src/sdbRaw.c
index 244e50b52e..4f68139155 100644
--- a/source/dnode/mnode/sdb/src/sdbRaw.c
+++ b/source/dnode/mnode/sdb/src/sdbRaw.c
@@ -67,6 +67,21 @@ int32_t sdbSetRawInt8(SSdbRaw *pRaw, int32_t dataPos, int8_t val) {
   return 0;
 }
 
+int32_t sdbSetRawUInt8(SSdbRaw *pRaw, int32_t dataPos, uint8_t val) {
+  if (pRaw == NULL) {
+    terrno = TSDB_CODE_INVALID_PTR;
+    return -1;
+  }
+
+  if (dataPos + sizeof(uint8_t) > pRaw->dataLen) {
+    terrno = TSDB_CODE_SDB_INVALID_DATA_LEN;
+    return -1;
+  }
+
+  *(uint8_t *)(pRaw->pData + dataPos) = val;
+  return 0;
+}
+
 int32_t sdbSetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t val) {
   if (pRaw == NULL) {
     terrno = TSDB_CODE_INVALID_PTR;
@@ -174,6 +189,21 @@ int32_t sdbGetRawInt8(SSdbRaw *pRaw, int32_t dataPos, int8_t *val) {
   return 0;
 }
 
+int32_t sdbGetRawUInt8(SSdbRaw *pRaw, int32_t dataPos, uint8_t *val) {
+  if (pRaw == NULL) {
+    terrno = TSDB_CODE_INVALID_PTR;
+    return -1;
+  }
+
+  if (dataPos + sizeof(uint8_t) > pRaw->dataLen) {
+    terrno = TSDB_CODE_SDB_INVALID_DATA_LEN;
+    return -1;
+  }
+
+  *val = *(uint8_t *)(pRaw->pData + dataPos);
+  return 0;
+}
+
 int32_t sdbGetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t *val) {
   if (pRaw == NULL) {
     terrno = TSDB_CODE_INVALID_PTR;