diff --git a/src/system/detail/src/mgmtDb.c b/src/system/detail/src/mgmtDb.c
index 01b5c00a8336d5ea59edd88d70eed15db51faa54..ba1b966cfb295ce5ea7ad704beb60d2b4a6c37b8 100644
--- a/src/system/detail/src/mgmtDb.c
+++ b/src/system/detail/src/mgmtDb.c
@@ -142,7 +142,7 @@ int mgmtCheckDbParams(SCreateDbMsg *pCreate) {
   if (pCreate->cacheNumOfBlocks.fraction < 0) pCreate->cacheNumOfBlocks.fraction = tsAverageCacheBlocks;  //
   //-1 for balance
 
-  if (pCreate->replications <= 0 || pCreate->replications > TSDB_REPLICA_MAX_NUM) {
+  if (pCreate->replications < 0 || pCreate->replications > TSDB_REPLICA_MAX_NUM) {
     mTrace("invalid db option replications: %d", pCreate->replications);
     return TSDB_CODE_INVALID_OPTION;
   }
diff --git a/src/system/lite/src/mgmtBalance.spec.c b/src/system/lite/src/mgmtBalance.spec.c
index 91a93fd1d91d0b4df1b50a5d45382cbcc7900dfb..3d2f10dcbbc45e21ec0195067797d7dd439e4e94 100644
--- a/src/system/lite/src/mgmtBalance.spec.c
+++ b/src/system/lite/src/mgmtBalance.spec.c
@@ -26,9 +26,10 @@ void mgmtCleanupBalance() {}
 int mgmtAllocVnodes(SVgObj *pVgroup) {
   int        selectedVnode = -1;
   SDnodeObj *pDnode = &dnodeObj;
+  int        lastAllocVode = pDnode->lastAllocVnode;
 
   for (int i = 0; i < pDnode->numOfVnodes; i++) {
-    int vnode = (i + pDnode->lastAllocVnode) % pDnode->numOfVnodes;
+    int vnode = (i + lastAllocVode) % pDnode->numOfVnodes;
     if (pDnode->vload[vnode].vgId == 0 && pDnode->vload[vnode].status == TSDB_VN_STATUS_OFFLINE) {
       selectedVnode = vnode;
       break;
@@ -39,8 +40,7 @@ int mgmtAllocVnodes(SVgObj *pVgroup) {
     mError("vgroup:%d alloc vnode failed, free vnodes:%d", pVgroup->vgId, pDnode->numOfFreeVnodes);
     return -1;
   } else {
-    mTrace("vgroup:%d allocate vnode:%d, last allocated vnode:%d", pVgroup->vgId, selectedVnode,
-           pDnode->lastAllocVnode);
+    mTrace("vgroup:%d allocate vnode:%d, last allocated vnode:%d", pVgroup->vgId, selectedVnode, lastAllocVode);
     pVgroup->vnodeGid[0].vnode = selectedVnode;
     pDnode->lastAllocVnode = selectedVnode + 1;
     if (pDnode->lastAllocVnode >= pDnode->numOfVnodes) pDnode->lastAllocVnode = 0;
diff --git a/src/system/lite/src/mgmtDnode.spec.c b/src/system/lite/src/mgmtDnode.spec.c
index fa14dc1cb81130f5a4cee8f76db2ce2cc08f959d..dc7dd7d4725e8176daf358feefc14a4467791606 100644
--- a/src/system/lite/src/mgmtDnode.spec.c
+++ b/src/system/lite/src/mgmtDnode.spec.c
@@ -37,7 +37,7 @@ int mgmtInitDnodes() {
   dnodeObj.thandle = (void*)(1);  //hack way
   if (dnodeObj.numOfVnodes == TSDB_INVALID_VNODE_NUM) {
     mgmtSetDnodeMaxVnodes(&dnodeObj);
-    mPrint("first access, set total vnodes:%d", dnodeObj.numOfVnodes);
+    mPrint("dnode first access, set total vnodes:%d", dnodeObj.numOfVnodes);
   }
   return  0;
 }