diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index f2f8931aa1dc534cbae5e92714be8f146de583b9..85b7fbbb421258beba30ec6b7a43d4d77c550317 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -463,7 +463,7 @@ static int32_t mndProcessCreateDbReq(SMnodeMsg *pReq) {
   pCreate->commitTime = htonl(pCreate->commitTime);
   pCreate->fsyncPeriod = htonl(pCreate->fsyncPeriod);
 
-  mDebug("db:%s, start to create", pCreate->db);
+  mDebug("db:%s, start to create, vgroups:%d", pCreate->db, pCreate->numOfVgroups);
 
   SDbObj *pDb = mndAcquireDb(pMnode, pCreate->db);
   if (pDb != NULL) {
@@ -476,6 +476,9 @@ static int32_t mndProcessCreateDbReq(SMnodeMsg *pReq) {
       mError("db:%s, failed to create since %s", pCreate->db, terrstr());
       return -1;
     }
+  } else if (terrno != TSDB_CODE_MND_DB_NOT_EXIST) {
+    mError("db:%s, failed to create since %s", pCreate->db, terrstr());
+    return -1;
   }
 
   SUserObj *pOperUser = mndAcquireUser(pMnode, pReq->user);
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index 4a42133ce33d07523393be1023216b1153e6c7e3..058178260fe7ac29387d018706733b0dcd188834 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -809,7 +809,7 @@ static bool mndTransPerformUndoLogStage(SMnode *pMnode, STrans *pTrans) {
     mDebug("trans:%d, stage from undoLog to rollback", pTrans->id);
     continueExec = true;
   } else {
-    mDebug("trans:%d, stage keep on undoLog since %s", pTrans->id, terrstr());
+    mError("trans:%d, stage keep on undoLog since %s", pTrans->id, terrstr());
     continueExec = false;
   }
 
@@ -825,7 +825,7 @@ static bool mndTransPerformUndoActionStage(SMnode *pMnode, STrans *pTrans) {
     mDebug("trans:%d, stage from undoAction to undoLog", pTrans->id);
     continueExec = true;
   } else if (code == TSDB_CODE_MND_ACTION_IN_PROGRESS) {
-    mDebug("trans:%d, stage keep on undoAction since %s", pTrans->id, tstrerror(code));
+    mError("trans:%d, stage keep on undoAction since %s", pTrans->id, tstrerror(code));
     continueExec = false;
   } else {
     pTrans->failedTimes++;
diff --git a/source/dnode/mnode/impl/src/mndVgroup.c b/source/dnode/mnode/impl/src/mndVgroup.c
index 4b7b37037192d31c75aed47edc33ccd5e36ca3b4..e0d6d3dd429c19befefa2ee38abf4ec62b3b8816 100644
--- a/source/dnode/mnode/impl/src/mndVgroup.c
+++ b/source/dnode/mnode/impl/src/mndVgroup.c
@@ -273,15 +273,10 @@ static bool mndBuildDnodesArrayFp(SMnode *pMnode, void *pObj, void *p1, void *p2
   SDnodeObj *pDnode = pObj;
   SArray    *pArray = p1;
 
-  pDnode->numOfVnodes = mndGetVnodesNum(pMnode, pDnode->id);
-
   int64_t curMs = taosGetTimestampMs();
   bool    online = mndIsDnodeOnline(pMnode, pDnode, curMs);
-  if (online && pDnode->numOfSupportVnodes > 0) {
-    taosArrayPush(pArray, pDnode);
-  }
-
-  bool isMnode = mndIsMnode(pMnode, pDnode->id);
+  bool    isMnode = mndIsMnode(pMnode, pDnode->id);
+  pDnode->numOfVnodes = mndGetVnodesNum(pMnode, pDnode->id);
 
   mDebug("dnode:%d, vnodes:%d supportVnodes:%d isMnode:%d online:%d", pDnode->id, pDnode->numOfVnodes,
          pDnode->numOfSupportVnodes, isMnode, online);
@@ -290,6 +285,9 @@ static bool mndBuildDnodesArrayFp(SMnode *pMnode, void *pObj, void *p1, void *p2
     pDnode->numOfVnodes++;
   }
 
+  if (online && pDnode->numOfSupportVnodes > 0) {
+    taosArrayPush(pArray, pDnode);
+  }
   return true;
 }
 
@@ -311,7 +309,7 @@ static SArray *mndBuildDnodesArray(SMnode *pMnode) {
 static int32_t mndCompareDnodeVnodes(SDnodeObj *pDnode1, SDnodeObj *pDnode2) {
   float d1Score = (float)pDnode1->numOfVnodes / pDnode1->numOfSupportVnodes;
   float d2Score = (float)pDnode2->numOfVnodes / pDnode2->numOfSupportVnodes;
-  return d1Score > d2Score ? 1 : 0;
+  return d1Score >= d2Score ? 1 : 0;
 }
 
 static int32_t mndGetAvailableDnode(SMnode *pMnode, SVgObj *pVgroup, SArray *pArray) {
diff --git a/source/dnode/mnode/impl/test/db/db.cpp b/source/dnode/mnode/impl/test/db/db.cpp
index 4f0ba9b0e7d278fc1562ae2c5d9e2cfa14118bb2..5d5947b644ff352e8c5af736220254de650994e9 100644
--- a/source/dnode/mnode/impl/test/db/db.cpp
+++ b/source/dnode/mnode/impl/test/db/db.cpp
@@ -13,28 +13,17 @@
 
 class MndTestDb : public ::testing::Test {
  protected:
-  static void SetUpTestSuite() {
-    test.Init("/tmp/mnode_test_db", 9030);
-    const char* fqdn = "localhost";
-    const char* firstEp = "localhost:9030";
+  static void SetUpTestSuite() { test.Init("/tmp/mnode_test_db", 9030); }
+  static void TearDownTestSuite() { test.Cleanup(); }
 
-    server2.Start("/tmp/mnode_test_db2", fqdn, 9031, firstEp);
-  }
-  static void TearDownTestSuite() {
-    server2.Stop();
-    test.Cleanup();
-  }
-
-  static Testbase   test;
-  static TestServer server2;
+  static Testbase test;
 
  public:
   void SetUp() override {}
   void TearDown() override {}
 };
 
-Testbase   MndTestDb::test;
-TestServer MndTestDb::server2;
+Testbase MndTestDb::test;
 
 TEST_F(MndTestDb, 01_ShowDb) {
   test.SendShowMetaReq(TSDB_MGMT_TABLE_DB, "");
diff --git a/tests/script/jenkins/basic.txt b/tests/script/jenkins/basic.txt
index f960abb4e02021e05a6767a5ebe8e89278dcdc0c..bc0c3a4f647778e330822c1baf999c0c10429b95 100644
--- a/tests/script/jenkins/basic.txt
+++ b/tests/script/jenkins/basic.txt
@@ -2,15 +2,16 @@
 #======================b1-start===============
 
 # ---- user
-./test.sh -f general/user/basic1.sim 
+./test.sh -f sim/user/basic1.sim 
 
 # ---- db
-./test.sh -f general/db/basic1.sim 
+./test.sh -f sim/db/basic1.sim 
+./test.sh -f sim/db/error1.sim 
 
 # ---- table
-./test.sh -f general/table/basic1.sim 
+./test.sh -f sim/table/basic1.sim 
 
 # ---- dnode
-./test.sh -f unique/dnode/basic1.sim
+./test.sh -f sim/dnode/basic1.sim
 
 #======================b1-end===============
diff --git a/tests/script/general/db/basic1.sim b/tests/script/sim/db/basic1.sim
similarity index 100%
rename from tests/script/general/db/basic1.sim
rename to tests/script/sim/db/basic1.sim
diff --git a/tests/script/sim/db/error1.sim b/tests/script/sim/db/error1.sim
new file mode 100644
index 0000000000000000000000000000000000000000..6698ca6f67328fb1b54d568ab315cff3c3246f54
--- /dev/null
+++ b/tests/script/sim/db/error1.sim
@@ -0,0 +1,61 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/exec.sh -n dnode1 -s start
+system sh/deploy.sh -n dnode2 -i 2
+system sh/exec.sh -n dnode2 -s start
+sql connect
+
+print ========== create dnodes
+sql create dnode $hostname port 7200
+
+$x = 0
+create1:
+	$x = $x + 1
+	sleep 1000
+	if $x == 10 then
+		return -1
+	endi
+
+sql show dnodes
+if $data4_2 != ready then
+	goto create1
+endi
+
+print ========== stop dnode2
+system sh/exec.sh -n dnode2 -s stop -x SIGKILL
+
+print =============== create database
+sql_error create database d1 vgroups 4
+
+print ========== start dnode2
+system sh/exec.sh -n dnode2 -s start
+
+print =============== re-create database
+$x = 0
+re-create1:
+	$x = $x + 1
+	sleep 1000
+	if $x == 10 then
+		return -1
+	endi
+
+sql create database d1 vgroups 2 -x re-create1
+
+sql show databases
+if $rows != 1 then 
+  return -1
+endi
+
+if $data00 != d1 then 
+  return -1
+endi
+
+if $data02 != 2 then 
+  return -1
+endi
+
+if $data03 != 0 then 
+  return -1
+endi
+
+system sh/exec.sh -n dnode1 -s stop -x SIGINT
\ No newline at end of file
diff --git a/tests/script/unique/dnode/basic1.sim b/tests/script/sim/dnode/basic1.sim
similarity index 100%
rename from tests/script/unique/dnode/basic1.sim
rename to tests/script/sim/dnode/basic1.sim
diff --git a/tests/script/general/table/basic1.sim b/tests/script/sim/table/basic1.sim
similarity index 100%
rename from tests/script/general/table/basic1.sim
rename to tests/script/sim/table/basic1.sim
diff --git a/tests/script/general/user/basic1.sim b/tests/script/sim/user/basic1.sim
similarity index 100%
rename from tests/script/general/user/basic1.sim
rename to tests/script/sim/user/basic1.sim