diff --git a/src/mnode/src/mgmtSdb.c b/src/mnode/src/mgmtSdb.c
index 804522d19ad06cc5cbb00183c738fb4da203038b..26afc1c6f0696e8082da65fd5438833034c32e87 100644
--- a/src/mnode/src/mgmtSdb.c
+++ b/src/mnode/src/mgmtSdb.c
@@ -332,7 +332,7 @@ void sdbIncRef(void *handle, void *pRow) {
     SSdbTable *pTable = handle;
     int32_t *  pRefCount = (int32_t *)(pRow + pTable->refCountPos);
     atomic_add_fetch_32(pRefCount, 1);
-    if (0 && strcmp(pTable->tableName, "accounts") == 0) {
+    if (0 && pTable->tableId == SDB_TABLE_CTABLE) {
       sdbTrace("table:%s, add ref to record:%s:%s:%d", pTable->tableName, pTable->tableName, sdbGetkeyStr(pTable, pRow),
                *pRefCount);
     }
@@ -344,7 +344,7 @@ void sdbDecRef(void *handle, void *pRow) {
     SSdbTable *pTable = handle;
     int32_t *  pRefCount = (int32_t *)(pRow + pTable->refCountPos);
     int32_t    refCount = atomic_sub_fetch_32(pRefCount, 1);
-    if (0 && strcmp(pTable->tableName, "accounts") == 0) {
+    if (0 && pTable->tableId == SDB_TABLE_CTABLE) {
       sdbTrace("table:%s, def ref of record:%s:%s:%d", pTable->tableName, pTable->tableName, sdbGetkeyStr(pTable, pRow),
                *pRefCount);
     }
diff --git a/src/mnode/src/mgmtTable.c b/src/mnode/src/mgmtTable.c
index 59010da61296f747851ceed0419e46eae810b178..c83c3f1d8dd70ceedb3512cfda92bf56d3ee3d57 100644
--- a/src/mnode/src/mgmtTable.c
+++ b/src/mnode/src/mgmtTable.c
@@ -41,8 +41,8 @@
 #include "mgmtVgroup.h"
 #include "tcompare.h"
 
-void *  tsChildTableSdb;
-void *  tsSuperTableSdb;
+static void *  tsChildTableSdb;
+static void *  tsSuperTableSdb;
 static int32_t tsChildTableUpdateSize;
 static int32_t tsSuperTableUpdateSize;
 static void *  mgmtGetChildTable(char *tableId);
@@ -361,7 +361,7 @@ static void mgmtCleanUpChildTables() {
 
 static void mgmtAddTableIntoStable(SSuperTableObj *pStable, SChildTableObj *pCtable) {
   if (pStable->vgLen == 0) {
-    pStable->vgLen = 10;
+    pStable->vgLen = 8;
     pStable->vgList = calloc(pStable->vgLen, sizeof(int32_t));
   }