diff --git a/src/inc/taoserror.h b/src/inc/taoserror.h
index 9afc3de7a83ba4372de07af79a1f5f93db8608eb..5510212dbc37f6ce3ebb33c43d34ca93fc0649c1 100644
--- a/src/inc/taoserror.h
+++ b/src/inc/taoserror.h
@@ -135,6 +135,7 @@ extern "C" {
 #define TSDB_CODE_NOT_ACTIVE_TABLE           114
 #define TSDB_CODE_INVALID_TABLE_ID           115
 #define TSDB_CODE_INVALID_VNODE_STATUS       116
+#define TSDB_CODE_FAILED_TO_LOCK_RESOURCES   117
 
 #ifdef __cplusplus
 }
diff --git a/src/rpc/src/tstring.c b/src/rpc/src/tstring.c
index d11f75885f550a6c158aae3b5b4494166182004b..e3daca130a83c1c363dad3eeb9bef1d2394842b2 100644
--- a/src/rpc/src/tstring.c
+++ b/src/rpc/src/tstring.c
@@ -241,4 +241,5 @@ char *tsError[] = {"success",
                    "not active table(not created yet or deleted already)",  //114
                    "invalid table id",
                    "invalid vnode status",    //116
+                   "failed to lock resources",
 };
diff --git a/src/system/detail/src/dnodeMgmt.c b/src/system/detail/src/dnodeMgmt.c
index a1668b89cf2d7b255c7c32a643a084418cbf0c5d..630e50b44d2de5d1a888f8342f730a8a288324ec 100644
--- a/src/system/detail/src/dnodeMgmt.c
+++ b/src/system/detail/src/dnodeMgmt.c
@@ -373,7 +373,11 @@ int vnodeProcessVPeerCfg(char *msg, int msgLen, SMgmtObj *pMgmtObj) {
   } else {
     dTrace("vid:%d, vnode is not empty", vnode);
     if (pCfg->maxSessions > 0) {
-      dTrace("vid:%d, status:%s, start to update vnode", vnode, taosGetVnodeStatusStr(vnodeList[vnode].vnodeStatus));
+      if (vnodeList[vnode].vnodeStatus == TSDB_VNODE_STATUS_DELETING) {
+        dTrace("vid:%d, status:%s, wait vnode delete finished", vnode, taosGetVnodeStatusStr(vnodeList[vnode].vnodeStatus));
+      } else {
+        dTrace("vid:%d, status:%s, start to update vnode", vnode, taosGetVnodeStatusStr(vnodeList[vnode].vnodeStatus));
+      }
       /*
       if (pCfg->maxSessions != vnodeList[vnode].cfg.maxSessions) {
         vnodeCleanUpOneVnode(vnode);
diff --git a/src/system/detail/src/mgmtDnodeInt.c b/src/system/detail/src/mgmtDnodeInt.c
index af86757d5165b4ccec638443282a55f9924184fe..79f036d0d74ef711af94398c30bebf4756e860e6 100644
--- a/src/system/detail/src/mgmtDnodeInt.c
+++ b/src/system/detail/src/mgmtDnodeInt.c
@@ -128,7 +128,8 @@ int mgmtProcessVPeersRsp(char *msg, int msgLen, SDnodeObj *pObj) {
   }
 
   if (pDb->vgStatus != TSDB_VG_STATUS_IN_PROGRESS) {
-    mTrace("dnode:%s, db:%s vpeer rsp already disposed, code:%d", taosIpStr(pObj->privateIp), pRsp->more, pRsp->code);
+    mTrace("===> pDb:%s %p status:%d", pDb->name, pDb, pDb->vgStatus);
+    mTrace("dnode:%s, db:%s vpeer rsp already disposed, vgroup status:%d code:%d", taosIpStr(pObj->privateIp), pRsp->more, pDb->vgStatus, pRsp->code);
     return 0;
   }
 
@@ -140,10 +141,11 @@ int mgmtProcessVPeersRsp(char *msg, int msgLen, SDnodeObj *pObj) {
 
   if (pRsp->code == TSDB_CODE_VG_COMMITLOG_INIT_FAILED) {
     pDb->vgStatus = TSDB_VG_STATUS_COMMITLOG_INIT_FAILED;
+    mError("dnode:%s, db:%s vgroup commit log init failed, code:%d", taosIpStr(pObj->privateIp), pRsp->more, pRsp->code);
   } else {
     pDb->vgStatus = TSDB_VG_STATUS_INIT_FAILED;
+    mError("dnode:%s, db:%s vgroup init failed, code:%d", taosIpStr(pObj->privateIp), pRsp->more, pRsp->code);
   }
-  mError("dnode:%s, db:%s vgroup create failed, code:%d", taosIpStr(pObj->privateIp), pRsp->more, pRsp->code);
 
   return 0;
 }
@@ -331,7 +333,6 @@ char *mgmtBuildVpeersIe(char *pMsg, SVgObj *pVgroup, int vnode) {
   pCfg->replications = (char)pVgroup->numOfVnodes;
   pCfg->rowsInFileBlock = htonl(pCfg->rowsInFileBlock);
 
-#ifdef CLUSTER
   SVPeerDesc *vpeerDesc = pVPeers->vpeerDesc;
 
   pMsg = (char *)(pVPeers->vpeerDesc);
@@ -341,7 +342,6 @@ char *mgmtBuildVpeersIe(char *pMsg, SVgObj *pVgroup, int vnode) {
     vpeerDesc[j].vnode = htonl(pVgroup->vnodeGid[j].vnode);
     pMsg += sizeof(SVPeerDesc);
   }
-#endif
 
   return pMsg;
 }
diff --git a/src/system/detail/src/mgmtMeter.c b/src/system/detail/src/mgmtMeter.c
index d4ffabe4b7a5444cbc6a71ee29c02e03035a4e9e..ba9c0a4cb979b62399233ff2f1b1ef8825e80372 100644
--- a/src/system/detail/src/mgmtMeter.c
+++ b/src/system/detail/src/mgmtMeter.c
@@ -502,7 +502,7 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
 
   int numOfTables = sdbGetNumOfRows(meterSdb);
   if (numOfTables >= tsMaxTables) {
-    mWarn("numOfTables:%d, exceed tsMaxTables:%d", numOfTables, tsMaxTables);
+    mError("table:%s, numOfTables:%d exceed maxTables:%d", pCreate->meterId, numOfTables, tsMaxTables);
     return TSDB_CODE_TOO_MANY_TABLES;
   }
 
@@ -510,6 +510,7 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
   assert(pAcct != NULL);
   int code = mgmtCheckMeterLimit(pAcct, pCreate);
   if (code != 0) {
+    mError("table:%s, exceed the limit", pCreate->meterId);
     return code;
   }
 
@@ -517,8 +518,10 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
   pMeter = mgmtGetMeter(pCreate->meterId);
   if (pMeter) {
     if (pCreate->igExists) {
+      mError("table:%s, igExists is true", pCreate->meterId);
       return TSDB_CODE_SUCCESS;
     } else {
+      mError("table:%s, table is already exist", pCreate->meterId);
       return TSDB_CODE_TABLE_ALREADY_EXIST;
     }
   }
@@ -533,6 +536,7 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
     char *pTagData = (char *)pCreate->schema;  // it is a tag key
     pMetric = mgmtGetMeter(pTagData);
     if (pMetric == NULL) {
+      mError("table:%s, corresponding super table does not exist", pCreate->meterId);
       return TSDB_CODE_INVALID_TABLE;
     }
 
@@ -545,6 +549,7 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
     pMeter->schema = (char *)malloc(size);
     if (pMeter->schema == NULL) {
       mgmtDestroyMeter(pMeter);
+      mError("table:%s, corresponding super table schema is null", pCreate->meterId);
       return TSDB_CODE_INVALID_TABLE;
     }
     memset(pMeter->schema, 0, size);
@@ -556,13 +561,13 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
     pMeter->pTagData = pMeter->schema;
     pMeter->nextColId = pMetric->nextColId;
     memcpy(pMeter->pTagData, pTagData, size);
-
   } else {
     int numOfCols = pCreate->numOfColumns + pCreate->numOfTags;
     size = numOfCols * sizeof(SSchema) + pCreate->sqlLen;
     pMeter->schema = (char *)malloc(size);
     if (pMeter->schema == NULL) {
       mgmtDestroyMeter(pMeter);
+      mError("table:%s, no schema input", pCreate->meterId);
       return TSDB_CODE_SERV_OUT_OF_MEMORY;
     }
     memset(pMeter->schema, 0, size);
@@ -583,7 +588,7 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
       pMeter->pSql = pMeter->schema + numOfCols * sizeof(SSchema);
       memcpy(pMeter->pSql, (char *)(pCreate->schema) + numOfCols * sizeof(SSchema), pCreate->sqlLen);
       pMeter->pSql[pCreate->sqlLen - 1] = 0;
-      mTrace("stream sql len:%d, sql:%s", pCreate->sqlLen, pMeter->pSql);
+      mTrace("table:%s, stream sql len:%d sql:%s", pCreate->meterId, pCreate->sqlLen, pMeter->pSql);
     } else {
       if (pCreate->numOfTags > 0) {
         pMeter->meterType = TSDB_METER_METRIC;
@@ -596,13 +601,14 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
   pMeter->createdTime = taosGetTimestampMs();
   strcpy(pMeter->meterId, pCreate->meterId);
   if (pthread_rwlock_init(&pMeter->rwLock, NULL)) {
-    mError("Failed to init meter lock");
+    mError("table:%s, failed to init meter lock", pCreate->meterId);
     mgmtDestroyMeter(pMeter);
-    return TSDB_CODE_OTHERS;
+    return TSDB_CODE_FAILED_TO_LOCK_RESOURCES;
   }
 
   code = mgmtCheckMeterGrant(pCreate, pMeter);
   if (code != 0) {
+    mError("table:%s, grant expired", pCreate->meterId);
     return code;
   }
 
@@ -611,21 +617,26 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
 
     if (pDb->vgStatus == TSDB_VG_STATUS_IN_PROGRESS) {
       mgmtDestroyMeter(pMeter);
+      mTrace("table:%s, vgroup in creating progress", pCreate->meterId);
+      mTrace("===> pDb:%s %p status:%d", pDb->name, pDb, pDb->vgStatus);
       return TSDB_CODE_ACTION_IN_PROGRESS;
     }
 
     if (pDb->vgStatus == TSDB_VG_STATUS_FULL) {
       mgmtDestroyMeter(pMeter);
+      mError("table:%s, vgroup is full", pCreate->meterId);
       return TSDB_CODE_NO_ENOUGH_DNODES;
     }
 
     if (pDb->vgStatus == TSDB_VG_STATUS_COMMITLOG_INIT_FAILED) {
       mgmtDestroyMeter(pMeter);
+      mError("table:%s, commit log init failed", pCreate->meterId);
       return TSDB_CODE_VG_COMMITLOG_INIT_FAILED;
     }
 
     if (pDb->vgStatus == TSDB_VG_STATUS_INIT_FAILED) {
       mgmtDestroyMeter(pMeter);
+      mError("table:%s, vgroup init failed", pCreate->meterId);
       return TSDB_CODE_VG_INIT_FAILED;
     }
 
@@ -633,12 +644,14 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
       pDb->vgStatus = TSDB_VG_STATUS_IN_PROGRESS;
       mgmtCreateVgroup(pDb);
       mgmtDestroyMeter(pMeter);
+      mTrace("table:%s, vgroup malloced, wait for create progress finished", pCreate->meterId);
+      mTrace("===> pDb:%s %p status:%d", pDb->name, pDb, pDb->vgStatus);
       return TSDB_CODE_ACTION_IN_PROGRESS;
     }
 
     int sid = taosAllocateId(pVgroup->idPool);
     if (sid < 0) {
-      mWarn("db:%s, vgroup:%d, run out of ID, num:%d", pDb->name, pVgroup->vgId, taosIdPoolNumOfUsed(pVgroup->idPool));
+      mWarn("table:%s, vgroup:%d run out of ID, num:%d", pCreate->meterId, pVgroup->vgId, taosIdPoolNumOfUsed(pVgroup->idPool));
       pDb->vgStatus = TSDB_VG_STATUS_IN_PROGRESS;
       mgmtCreateVgroup(pDb);
       mgmtDestroyMeter(pMeter);
@@ -650,18 +663,21 @@ int mgmtCreateMeter(SDbObj *pDb, SCreateTableMsg *pCreate) {
     pMeter->uid = (((uint64_t)pMeter->gid.vgId) << 40) + ((((uint64_t)pMeter->gid.sid) & ((1ul << 24) - 1ul)) << 16) +
                   ((uint64_t)sdbVersion & ((1ul << 16) - 1ul));
 
-    mTrace("meter:%s, create meter in vgroup, vgId:%d, sid:%d, vnode:%d, uid:%d",
-           pMeter->meterId, pVgroup->vgId, sid, pVgroup->vnodeGid[0].vnode, pMeter->uid);
+    mTrace("table:%s, create table in vgroup, vgId:%d sid:%d vnode:%d uid:%d db:%s",
+           pMeter->meterId, pVgroup->vgId, sid, pVgroup->vnodeGid[0].vnode, pMeter->uid, pDb->name);
   } else {
     pMeter->uid = (((uint64_t)pMeter->createdTime) << 16) + ((uint64_t)sdbVersion & ((1ul << 16) - 1ul));
   }
 
-  if (sdbInsertRow(meterSdb, pMeter, 0) < 0) return TSDB_CODE_SDB_ERROR;
+  if (sdbInsertRow(meterSdb, pMeter, 0) < 0) {
+    mError("table:%s, update sdb error", pCreate->meterId);
+    return TSDB_CODE_SDB_ERROR;
+  }
 
   // send create message to the selected vnode servers
   if (pCreate->numOfTags == 0) {
-    mTrace("meter:%s, send msg to dnode, vgId:%d, sid:%d, vnode:%d, dbname:%s",
-           pMeter->meterId, pMeter->gid.vgId, pMeter->gid.sid, pVgroup->vnodeGid[0].vnode, pDb->name);
+    mTrace("table:%s, send create msg to dnode, vgId:%d, sid:%d, vnode:%d",
+           pMeter->meterId, pMeter->gid.vgId, pMeter->gid.sid, pVgroup->vnodeGid[0].vnode);
 
     grantAddTimeSeries(pMeter->numOfColumns - 1);
     mgmtSendCreateMsgToVgroup(pMeter, pVgroup);
@@ -881,7 +897,10 @@ void mgmtCleanUpMeters() { sdbCloseTable(meterSdb); }
 int mgmtGetMeterMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) {
   int cols = 0;
 
-  if (pConn->pDb == NULL) return TSDB_CODE_DB_NOT_SELECTED;
+  SDbObj *pDb = NULL;
+  if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+  if (pDb == NULL) return TSDB_CODE_DB_NOT_SELECTED;
 
   SSchema *pSchema = tsGetSchema(pMeta);
 
@@ -916,7 +935,7 @@ int mgmtGetMeterMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) {
   for (int i = 1; i < cols; ++i) pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
 
   //  pShow->numOfRows = sdbGetNumOfRows (meterSdb);
-  pShow->numOfRows = pConn->pDb->numOfTables;
+  pShow->numOfRows = pDb->numOfTables;
   pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
 
   return 0;
@@ -1208,8 +1227,12 @@ int mgmtRetrieveMeters(SShowObj *pShow, char *data, int rows, SConnObj *pConn) {
   int      numOfRead = 0;
   char     prefix[20] = {0};
 
-  if (pConn->pDb == NULL) return 0;
-  strcpy(prefix, pConn->pDb->name);
+  SDbObj *pDb = NULL;
+  if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+  if (pDb == NULL) return 0;
+
+  strcpy(prefix, pDb->name);
   strcat(prefix, TS_PATH_DELIMITER);
   prefixLen = strlen(prefix);
 
@@ -1269,7 +1292,10 @@ int mgmtRetrieveMeters(SShowObj *pShow, char *data, int rows, SConnObj *pConn) {
 int mgmtGetMetricMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) {
   int cols = 0;
 
-  if (pConn->pDb == NULL) return TSDB_CODE_DB_NOT_SELECTED;
+  SDbObj *pDb = NULL;
+  if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+  if (pDb == NULL) return TSDB_CODE_DB_NOT_SELECTED;
 
   SSchema *pSchema = tsGetSchema(pMeta);
 
@@ -1309,8 +1335,8 @@ int mgmtGetMetricMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) {
   pShow->offset[0] = 0;
   for (int i = 1; i < cols; ++i) pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
 
-  pShow->numOfRows = pConn->pDb->numOfMetrics;
-  pShow->pNode = pConn->pDb->pMetric;
+  pShow->numOfRows = pDb->numOfMetrics;
+  pShow->pNode = pDb->pMetric;
   pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
 
   return 0;
diff --git a/src/system/detail/src/mgmtShell.c b/src/system/detail/src/mgmtShell.c
index efd863a7efb08ffb447d58ec8959e0b1e6a98385..e58938bdadab464bffe04e17cc390fc0876fe75b 100644
--- a/src/system/detail/src/mgmtShell.c
+++ b/src/system/detail/src/mgmtShell.c
@@ -189,8 +189,11 @@ int mgmtProcessMeterMetaMsg(char *pMsg, int msgLen, SConnObj *pConn) {
   int size = sizeof(STaosHeader) + sizeof(STaosRsp) + sizeof(SMeterMeta) + sizeof(SSchema) * TSDB_MAX_COLUMNS +
              sizeof(SSchema) * TSDB_MAX_TAGS + TSDB_MAX_TAGS_LEN + TSDB_EXTRA_PAYLOAD_SIZE;
 
+  SDbObj *pDb = NULL;
+  if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
   // todo db check should be extracted
-  if (pConn->pDb == NULL || (pConn->pDb != NULL && pConn->pDb->dropStatus != TSDB_DB_STATUS_READY)) {
+  if (pDb == NULL || (pDb != NULL && pDb->dropStatus != TSDB_DB_STATUS_READY)) {
 
     if ((pStart = mgmtAllocMsg(pConn, size, &pMsg, &pRsp)) == NULL) {
       taosSendSimpleRsp(pConn->thandle, TSDB_MSG_TYPE_METERINFO_RSP, TSDB_CODE_SERV_OUT_OF_MEMORY);
@@ -223,10 +226,10 @@ int mgmtProcessMeterMetaMsg(char *pMsg, int msgLen, SConnObj *pConn) {
 
     SDbObj* pMeterDb = mgmtGetDbByMeterId(pCreateMsg->meterId);
     mTrace("meter:%s, pConnDb:%p, pConnDbName:%s, pMeterDb:%p, pMeterDbName:%s",
-           pCreateMsg->meterId, pConn->pDb, pConn->pDb->name, pMeterDb, pMeterDb->name);
-    assert(pConn->pDb == pMeterDb);
+           pCreateMsg->meterId, pDb, pDb->name, pMeterDb, pMeterDb->name);
+    assert(pDb == pMeterDb);
 
-    int32_t code = mgmtCreateMeter(pConn->pDb, pCreateMsg);
+    int32_t code = mgmtCreateMeter(pDb, pCreateMsg);
 
     char stableName[TSDB_METER_ID_LEN] = {0};
     strncpy(stableName, pInfo->tags, TSDB_METER_ID_LEN);
@@ -256,7 +259,7 @@ int mgmtProcessMeterMetaMsg(char *pMsg, int msgLen, SConnObj *pConn) {
   }
 
   if (pMeterObj == NULL) {
-    if (pConn->pDb)
+    if (pDb)
       pRsp->code = TSDB_CODE_INVALID_TABLE;
     else
       pRsp->code = TSDB_CODE_DB_NOT_SELECTED;
@@ -274,7 +277,7 @@ int mgmtProcessMeterMetaMsg(char *pMsg, int msgLen, SConnObj *pConn) {
     pMeta->vgid = htonl(pMeterObj->gid.vgId);
     pMeta->sversion = htons(pMeterObj->sversion);
 
-    pMeta->precision = pConn->pDb->cfg.precision;
+    pMeta->precision = pDb->cfg.precision;
 
     pMeta->numOfTags = pMeterObj->numOfTags;
     pMeta->numOfColumns = htons(pMeterObj->numOfColumns);
@@ -505,7 +508,10 @@ int mgmtProcessMetricMetaMsg(char *pMsg, int msgLen, SConnObj *pConn) {
   SMetricMetaElemMsg *pElem = (SMetricMetaElemMsg *)(((char *)pMetricMetaMsg) + pMetricMetaMsg->metaElem[0]);
   pMetric = mgmtGetMeter(pElem->meterId);
 
-  if (pMetric == NULL || (pConn->pDb != NULL && pConn->pDb->dropStatus != TSDB_DB_STATUS_READY)) {
+  SDbObj *pDb = NULL;
+  if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+  if (pMetric == NULL || (pDb != NULL && pDb->dropStatus != TSDB_DB_STATUS_READY)) {
     pStart = taosBuildRspMsg(pConn->thandle, TSDB_MSG_TYPE_METRIC_META_RSP);
     if (pStart == NULL) {
       taosSendSimpleRsp(pConn->thandle, TSDB_MSG_TYPE_METRIC_META_RSP, TSDB_CODE_SERV_OUT_OF_MEMORY);
@@ -514,7 +520,7 @@ int mgmtProcessMetricMetaMsg(char *pMsg, int msgLen, SConnObj *pConn) {
 
     pMsg = pStart;
     pRsp = (STaosRsp *)pMsg;
-    if (pConn->pDb)
+    if (pDb)
       pRsp->code = TSDB_CODE_INVALID_TABLE;
     else
       pRsp->code = TSDB_CODE_DB_NOT_SELECTED;
@@ -957,17 +963,23 @@ int mgmtProcessCreateTableMsg(char *pMsg, int msgLen, SConnObj *pConn) {
       pSchema++;
     }
 
-    if (pConn->pDb) {
-      code = mgmtCreateMeter(pConn->pDb, pCreate);
-      if (code == 0) {
-        mTrace("meter:%s is created by %s", pCreate->meterId, pConn->pUser->user);
-        // mLPrint("meter:%s is created by %s", pCreate->meterId, pConn->pUser->user);
-      }
+    SDbObj *pDb = NULL;
+    if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+    if (pDb) {
+      code = mgmtCreateMeter(pDb, pCreate);
     } else {
       code = TSDB_CODE_DB_NOT_SELECTED;
     }
   }
 
+  if (code != 0) {
+    mError("table:%s, failed to create table, code:%d", pCreate->meterId, code);
+  } else {
+    mTrace("table:%s, table is created by %s", pCreate->meterId, pConn->pUser->user);
+    //mLPrint("meter:%s is created by %s", pCreate->meterId, pConn->pUser->user);
+  }
+
   taosSendSimpleRsp(pConn->thandle, TSDB_MSG_TYPE_CREATE_TABLE_RSP, code);
 
   return 0;
@@ -984,7 +996,10 @@ int mgmtProcessDropTableMsg(char *pMsg, int msgLen, SConnObj *pConn) {
   if (!pConn->writeAuth) {
     code = TSDB_CODE_NO_RIGHTS;
   } else {
-    code = mgmtDropMeter(pConn->pDb, pDrop->meterId, pDrop->igNotExists);
+    SDbObj *pDb = NULL;
+    if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+    code = mgmtDropMeter(pDb, pDrop->meterId, pDrop->igNotExists);
     if (code == 0) {
       mTrace("meter:%s is dropped by user:%s", pDrop->meterId, pConn->pUser->user);
       // mLPrint("meter:%s is dropped by user:%s", pDrop->meterId, pConn->pUser->user);
@@ -1014,12 +1029,15 @@ int mgmtProcessAlterTableMsg(char *pMsg, int msgLen, SConnObj *pConn) {
       mError("meter:%s error numOfCols:%d in alter table", pAlter->meterId, pAlter->numOfCols);
       code = TSDB_CODE_APP_ERROR;
     } else {
-      if (pConn->pDb) {
+      SDbObj *pDb = NULL;
+      if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+      if (pDb) {
         for (int32_t i = 0; i < pAlter->numOfCols; ++i) {
           pAlter->schema[i].bytes = htons(pAlter->schema[i].bytes);
         }
 
-        code = mgmtAlterMeter(pConn->pDb, pAlter);
+        code = mgmtAlterMeter(pDb, pAlter);
         if (code == 0) {
           mLPrint("meter:%s is altered by %s", pAlter->meterId, pConn->pUser->user);
         }
@@ -1263,8 +1281,7 @@ void *mgmtProcessMsgFromShell(char *msg, void *ahandle, void *thandle) {
     }
 
     if (pConn->pAcct) {
-      if (pConn->pDb == NULL ||
-          strncmp(pConn->pDb->name, pHead->db, tListLen(pConn->pDb->name)) != 0) {
+      if (pConn->pDb == NULL || strncmp(pConn->pDb->name, pHead->db, tListLen(pConn->pDb->name)) != 0) {
         pConn->pDb = mgmtGetDb(pHead->db);
       }
 
diff --git a/src/system/detail/src/mgmtVgroup.c b/src/system/detail/src/mgmtVgroup.c
index 3b1da25a0a7aff4a86ca50537cb88b394d4ccff2..97a7343e1e8c72e2ad49543a27ce5dda9dd9c8d1 100644
--- a/src/system/detail/src/mgmtVgroup.c
+++ b/src/system/detail/src/mgmtVgroup.c
@@ -123,7 +123,7 @@ void mgmtProcessVgTimer(void *handle, void *tmrId) {
   if (pDb == NULL) return;
 
   if (pDb->vgStatus > TSDB_VG_STATUS_IN_PROGRESS) {
-    mTrace("db:%s, set vgstatus from %d to %d", pDb->name, pDb->vgStatus, TSDB_VG_STATUS_READY);
+    mTrace("db:%s, set vgroup status from %d to ready", pDb->name, pDb->vgStatus);
     pDb->vgStatus = TSDB_VG_STATUS_READY;
   }
 
@@ -143,7 +143,7 @@ SVgObj *mgmtCreateVgroup(SDbObj *pDb) {
 
   // based on load balance, create a new one
   if (mgmtAllocVnodes(pVgroup) != 0) {
-    mError("no enough free dnode");
+    mError("db:%s, no enough free dnode to alloc %d vnodes", pDb->name, pVgroup->numOfVnodes);
     free(pVgroup);
     pDb->vgStatus = TSDB_VG_STATUS_FULL;
     taosTmrReset(mgmtProcessVgTimer, 5000, pDb, mgmtTmr, &pDb->vgTimer);
@@ -152,9 +152,9 @@ SVgObj *mgmtCreateVgroup(SDbObj *pDb) {
 
   sdbInsertRow(vgSdb, pVgroup, 0);
 
-  mTrace("vgroup:%d, db:%s replica:%d is created", pVgroup->vgId, pDb->name, pVgroup->numOfVnodes);
+  mTrace("vgroup:%d, vgroup is created, db:%s replica:%d", pVgroup->vgId, pDb->name, pVgroup->numOfVnodes);
   for (int i = 0; i < pVgroup->numOfVnodes; ++i)
-    mTrace("dnode:%s, vgroup:%d, vnode:%d is created", taosIpStr(pVgroup->vnodeGid[i].ip), pVgroup->vgId, pVgroup->vnodeGid[i].vnode);
+    mTrace("vgroup:%d, dnode:%s vnode:%d is created", pVgroup->vgId, taosIpStr(pVgroup->vnodeGid[i].ip), pVgroup->vnodeGid[i].vnode);
 
   mgmtSendVPeersMsg(pVgroup);
 
@@ -206,7 +206,10 @@ void mgmtCleanUpVgroups() { sdbCloseTable(vgSdb); }
 int mgmtGetVgroupMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) {
   int cols = 0;
 
-  if (pConn->pDb == NULL) return TSDB_CODE_DB_NOT_SELECTED;
+  SDbObj *pDb = NULL;
+  if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+  if (pDb == NULL) return TSDB_CODE_DB_NOT_SELECTED;
 
   SSchema *pSchema = tsGetSchema(pMeta);
 
@@ -229,7 +232,7 @@ int mgmtGetVgroupMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) {
   cols++;
 
   int     maxReplica = 0;
-  SVgObj *pVgroup = pConn->pDb->pHead;
+  SVgObj *pVgroup = pDb->pHead;
   while (pVgroup != NULL) {
     maxReplica = pVgroup->numOfVnodes > maxReplica ? pVgroup->numOfVnodes : maxReplica;
     pVgroup = pVgroup->next;
@@ -267,8 +270,8 @@ int mgmtGetVgroupMeta(SMeterMeta *pMeta, SShowObj *pShow, SConnObj *pConn) {
   pShow->offset[0] = 0;
   for (int i = 1; i < cols; ++i) pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
 
-  pShow->numOfRows = pConn->pDb->numOfVgroups;
-  pShow->pNode = pConn->pDb->pHead;
+  pShow->numOfRows = pDb->numOfVgroups;
+  pShow->pNode = pDb->pHead;
   pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
 
   return 0;
@@ -282,7 +285,11 @@ int mgmtRetrieveVgroups(SShowObj *pShow, char *data, int rows, SConnObj *pConn)
   char    ipstr[20];
 
   int maxReplica = 0;
-  pVgroup = pConn->pDb->pHead;
+
+  SDbObj *pDb = NULL;
+  if (pConn->pDb != NULL) pDb = mgmtGetDb(pConn->pDb->name);
+
+  pVgroup = pDb->pHead;
   while (pVgroup != NULL) {
     maxReplica = pVgroup->numOfVnodes > maxReplica ? pVgroup->numOfVnodes : maxReplica;
     pVgroup = pVgroup->next;
diff --git a/src/system/detail/src/vnodeStore.c b/src/system/detail/src/vnodeStore.c
index 8c958c21d72c0908c71956d02aebcd67a395b0d1..572bd88cf7b8c6c8cbe0450bed0f1fe51296d22b 100644
--- a/src/system/detail/src/vnodeStore.c
+++ b/src/system/detail/src/vnodeStore.c
@@ -141,7 +141,7 @@ static int vnodeCloseVnode(int vnode) {
   }
 
   if (pVnode->vnodeStatus == TSDB_VNODE_STATUS_DELETING) {
-    dTrace("vid:%d, status:%s, another performed delete operation", vnode, taosGetVnodeStatusStr(pVnode->vnodeStatus));
+    dTrace("vid:%d, status:%s, another thread performed delete operation", vnode, taosGetVnodeStatusStr(pVnode->vnodeStatus));
     return TSDB_CODE_SUCCESS;
   } else {
     dTrace("vid:%d, status:%s, enter close operation", vnode, taosGetVnodeStatusStr(pVnode->vnodeStatus));
@@ -250,7 +250,7 @@ static void vnodeRemoveDataFiles(int vnode) {
 
   sprintf(vnodeDir, "%s/vnode%d", tsDirectory, vnode);
   rmdir(vnodeDir);
-  dTrace("vnode %d is removed!", vnode);
+  dTrace("vid:%d, vnode is removed!", vnode);
 }
 
 int vnodeRemoveVnode(int vnode) {
diff --git a/src/system/lite/src/dnodeMgmt.spec.c b/src/system/lite/src/dnodeMgmt.spec.c
index 00e7e469c04847f6578f24c2f0a2ce30f09934d6..6c424a85af38022fd5acdc433b0442982d288471 100644
--- a/src/system/lite/src/dnodeMgmt.spec.c
+++ b/src/system/lite/src/dnodeMgmt.spec.c
@@ -50,7 +50,7 @@ char *taosBuildReqMsgToMnode(SMgmtObj *pObj, char type) {
 }
 
 int taosSendMsgToMnode(SMgmtObj *pObj, char *msg, int msgLen) {
-  mTrace("msg:%s is sent to mnode", taosMsg[*(msg-1)]);
+  dTrace("msg:%s is sent to mnode", taosMsg[*(msg-1)]);
 
   /*
    * Lite version has no message header, so minus one