diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 56bb93faa4..85b55611dc 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -1233,21 +1233,21 @@ int32_t tDeserializeSGetUserAuthRspImpl(SDecoder *pDecoder, SGetUserAuthRsp *pRs
   for (int32_t i = 0; i < numOfCreatedDbs; ++i) {
     char db[TSDB_DB_FNAME_LEN] = {0};
     if (tDecodeCStrTo(pDecoder, db) < 0) return -1;
-    int32_t len = strlen(db) + 1;
+    int32_t len = strlen(db);
     taosHashPut(pRsp->createdDbs, db, len, db, len);
   }
 
   for (int32_t i = 0; i < numOfReadDbs; ++i) {
     char db[TSDB_DB_FNAME_LEN] = {0};
     if (tDecodeCStrTo(pDecoder, db) < 0) return -1;
-    int32_t len = strlen(db) + 1;
+    int32_t len = strlen(db);
     taosHashPut(pRsp->readDbs, db, len, db, len);
   }
 
   for (int32_t i = 0; i < numOfWriteDbs; ++i) {
     char db[TSDB_DB_FNAME_LEN] = {0};
     if (tDecodeCStrTo(pDecoder, db) < 0) return -1;
-    int32_t len = strlen(db) + 1;
+    int32_t len = strlen(db);
     taosHashPut(pRsp->writeDbs, db, len, db, len);
   }
 
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index e4437f1a93..45995173e6 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -4206,7 +4206,7 @@ static void destroyOperatorInfo(SOperatorInfo* pOperator) {
     }
   }
 
-  taosMemoryFree(pOperator->pExpr);
+  taosMemoryFreeClear(pOperator->pExpr);
   taosMemoryFreeClear(pOperator->info);
   taosMemoryFreeClear(pOperator);
 }
@@ -4391,6 +4391,9 @@ void destroySFillOperatorInfo(void* param, int32_t numOfOutput) {
 }
 
 static void destroyProjectOperatorInfo(void* param, int32_t numOfOutput) {
+  if (NULL == param) {
+    return;
+  }
   SProjectOperatorInfo* pInfo = (SProjectOperatorInfo*)param;
   doDestroyBasicInfo(&pInfo->binfo, numOfOutput);
   cleanupAggSup(&pInfo->aggSup);
@@ -5328,7 +5331,6 @@ void doDestroyTask(SExecTaskInfo* pTaskInfo) {
   //  taosArrayDestroy(pTaskInfo->summary.queryProfEvents);
   //  taosHashCleanup(pTaskInfo->summary.operatorProfResults);
 
-  destroyOperatorInfo(pTaskInfo->pRoot);
   taosMemoryFreeClear(pTaskInfo->sql);
   taosMemoryFreeClear(pTaskInfo->id.str);
   taosMemoryFreeClear(pTaskInfo);
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 63ef3fc9a1..c8a3a89e40 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -3146,7 +3146,7 @@ static int32_t translateGrant(STranslateContext* pCxt, SGrantStmt* pStmt) {
     req.alterType = TSDB_ALTER_USER_ADD_WRITE_DB;
   }
   strcpy(req.user, pStmt->userName);
-  strcpy(req.dbname, pStmt->dbName);
+  sprintf(req.dbname, "%d.%s", pCxt->pParseCxt->acctId, pStmt->dbName);
   return buildCmdMsg(pCxt, TDMT_MND_ALTER_USER, (FSerializeFunc)tSerializeSAlterUserReq, &req);
 }