diff --git a/source/common/src/tdatablock.c b/source/common/src/tdatablock.c
index bc05f7a1c338158f1e842cfded22e60cc0215824..58ea3eaf4e084d70909d414fb63bb9301730dd6e 100644
--- a/source/common/src/tdatablock.c
+++ b/source/common/src/tdatablock.c
@@ -1713,7 +1713,7 @@ void blockDebugShowDataBlocks(const SArray* dataBlocks, const char* flag) {
   char    pBuf[128] = {0};
   int32_t sz = taosArrayGetSize(dataBlocks);
   for (int32_t i = 0; i < sz; i++) {
-    SSDataBlock* pDataBlock = taosArrayGet(dataBlocks, i);
+    SSDataBlock* pDataBlock = taosArrayGetP(dataBlocks, i);
     size_t       numOfCols = taosArrayGetSize(pDataBlock->pDataBlock);
 
     int32_t rows = pDataBlock->info.rows;
@@ -1890,6 +1890,7 @@ int32_t buildSubmitReqFromDataBlock(SSubmitReq** pReq, const SArray* pDataBlocks
   *pReq = taosMemoryCalloc(1, bufSize);
   if (!(*pReq)) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
+    uError("buildSubmitReqFromDataBlock for table:%" PRIi64 " bufSize:%d failed since %s", suid, bufSize, terrstr());
     return TSDB_CODE_FAILED;
   }
   void* pDataBuf = *pReq;
diff --git a/source/dnode/vnode/src/sma/smaRollup.c b/source/dnode/vnode/src/sma/smaRollup.c
index 801bc9c2e4e6519cfc4d415005836209f6c01980..bc71851160d8fb08dc354d11350196f0a2e52e66 100644
--- a/source/dnode/vnode/src/sma/smaRollup.c
+++ b/source/dnode/vnode/src/sma/smaRollup.c
@@ -636,7 +636,7 @@ static int32_t tdRSmaFetchAndSubmitResult(SSma *pSma, qTaskInfo_t taskInfo, SRSm
       break;
     }
 
-#if 1
+#if 0
     char flag[10] = {0};
     snprintf(flag, 10, "level %" PRIi8, pItem->level);
     blockDebugShowDataBlocks(pResList, flag);
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index fe278881be2734c4554f8c15b8a376ecebdb10e3..7115ad85a50884d21f496a900d21f0e954c07ea0 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -507,7 +507,7 @@ int32_t qExecTask(qTaskInfo_t tinfo, SSDataBlock** pRes, uint64_t* useconds) {
   *pRes = NULL;
   int64_t curOwner = 0;
   if ((curOwner = atomic_val_compare_exchange_64(&pTaskInfo->owner, 0, threadId)) != 0) {
-    qDebug("%s-%p execTask is now executed by thread:%p", GET_TASKID(pTaskInfo), pTaskInfo, (void*)curOwner);
+    qError("%s-%p execTask is now executed by thread:%p", GET_TASKID(pTaskInfo), pTaskInfo, (void*)curOwner);
     pTaskInfo->code = TSDB_CODE_QRY_IN_EXEC;
     return pTaskInfo->code;
   }
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index c2a467a2cb632a72be8562bde95ea9456deb6694..8a3d0620ed96cb60807e4d42790c779c73fa7145 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -119,7 +119,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_TSC_DISCONNECTED,             "Disconnected from ser
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_NO_WRITE_AUTH,            "No write permission")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_CONN_KILLED,              "Connection killed")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_SQL_SYNTAX_ERROR,         "Syntax error in SQL")
-TAOS_DEFINE_ERROR(TSDB_CODE_TSC_DB_NOT_SELECTED,          "TSC:Database not specified or available")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_DB_NOT_SELECTED,          "Database not specified or available")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_TABLE_NAME,       "Table does not exist")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_EXCEED_SQL_LIMIT,         "SQL statement too long, check maxSQLLength config")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_FILE_EMPTY,               "File is empty")
@@ -220,7 +220,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_FUNC_COMMENT,     "Invalid func comment"
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_FUNC_RETRIEVE,    "Invalid func retrieve msg")
 
 // mnode-db
-TAOS_DEFINE_ERROR(TSDB_CODE_MND_DB_NOT_SELECTED,          "MND:Database not specified or available")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_DB_NOT_SELECTED,          "Database not specified or available")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_DB_ALREADY_EXIST,         "Database already exists")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_DB_OPTION,        "Invalid database options")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_DB,               "Invalid database name")