diff --git a/docs/examples/R/connect_native.r b/docs/examples/R/connect_native.r
index bd764c3ec4..60d245781e 100644
--- a/docs/examples/R/connect_native.r
+++ b/docs/examples/R/connect_native.r
@@ -1,5 +1,5 @@
 if (! "RJDBC" %in% installed.packages()[, "Package"]) {
-  install.packages('RJDBC', repos='http://cran.us.r-project.org')
+  install.packages('RJDBC', repos='http://mirrors.tuna.tsinghua.edu.cn/CRAN')
 }
 
 # ANCHOR: demo
diff --git a/include/common/tmsgdef.h b/include/common/tmsgdef.h
index d1ac2c79c3..6e1980c0af 100644
--- a/include/common/tmsgdef.h
+++ b/include/common/tmsgdef.h
@@ -224,13 +224,14 @@
   TD_DEF_MSG_TYPE(TDMT_MND_CREATE_ENCRYPT_KEY, "create-encrypt-key", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_S3MIGRATE_DB, "s3migrate-db", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_S3MIGRATE_DB_TIMER, "s3migrate-db-tmr", NULL, NULL)
-  TD_DEF_MSG_TYPE(TDMT_MND_MAX_MSG, "mnd-max", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_MND_UNUSED2, "mnd-unused2", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_CREATE_TSMA, "create-tsma", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_DROP_TSMA, "drop-tsma", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_STB_DROP, "drop-stb", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_GET_TABLE_TSMA, "get-table-tsma", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_GET_TSMA, "get-tsma", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_DROP_TB_WITH_TSMA, "drop-tb-with-tsma", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_MND_MAX_MSG, "mnd-max", NULL, NULL)
   TD_CLOSE_MSG_SEG(TDMT_END_MND_MSG)
 
   TD_NEW_MSG_SEG(TDMT_VND_MSG)  // 2<<8
@@ -275,7 +276,6 @@
   TD_DEF_MSG_TYPE(TDMT_VND_ALTER_HASHRANGE, "alter-hashrange", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_COMPACT, "vnode-compact", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_DROP_TTL_TABLE, "vnode-drop-ttl-stb", NULL, NULL)
-  TD_DEF_MSG_TYPE(TDMT_VND_FETCH_TTL_EXPIRED_TBS, "vnode-fetch-ttl-expired-tbs", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_TRIM, "vnode-trim", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_COMMIT, "vnode-commit", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_CREATE_INDEX, "vnode-create-index", NULL, NULL)
@@ -286,6 +286,7 @@
   TD_DEF_MSG_TYPE(TDMT_VND_S3MIGRATE, "vnode-s3migrate", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_ARB_HEARTBEAT, "vnode-arb-hb", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_ARB_CHECK_SYNC, "vnode-arb-check-sync", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_VND_FETCH_TTL_EXPIRED_TBS, "vnode-fetch-ttl-expired-tbs", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_MAX_MSG, "vnd-max", NULL, NULL)
   TD_CLOSE_MSG_SEG(TDMT_END_VND_MSG)
 
@@ -318,11 +319,12 @@
   TD_DEF_MSG_TYPE(TDMT_STREAM_TASK_PAUSE, "stream-task-pause", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_STREAM_TASK_RESUME, "stream-task-resume", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_STREAM_TASK_STOP, "stream-task-stop", NULL, NULL)
-  TD_DEF_MSG_TYPE(TDMT_STREAM_MAX_MSG, "stream-max", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_STREAM_UNUSED, "stream-unused", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_STREAM_CREATE, "stream-create", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_STREAM_DROP, "stream-drop", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_STREAM_RETRIEVE_TRIGGER, "stream-retri-trigger", NULL, NULL)
 
+  TD_DEF_MSG_TYPE(TDMT_STREAM_MAX_MSG, "stream-max", NULL, NULL)
   TD_CLOSE_MSG_SEG(TDMT_END_STREAM_MSG)
 
   TD_NEW_MSG_SEG(TDMT_MON_MSG)  //5 << 8
@@ -369,8 +371,9 @@
   TD_DEF_MSG_TYPE(TDMT_VND_STREAM_TASK_UPDATE, "vnode-stream-update", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_STREAM_TASK_RESET, "vnode-stream-reset", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_STREAM_TASK_CHECK, "vnode-stream-task-check", NULL, NULL)
-  TD_DEF_MSG_TYPE(TDMT_VND_STREAM_MAX_MSG, "vnd-stream-max", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_VND_STREAM_UNUSED, "vnd-stream-unused", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_VND_GET_STREAM_PROGRESS, "vnd-stream-progress", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_VND_STREAM_MAX_MSG, "vnd-stream-max", NULL, NULL)
   TD_CLOSE_MSG_SEG(TDMT_END_VND_STREAM_MSG)
 
   TD_NEW_MSG_SEG(TDMT_VND_TMQ_MSG)  //8 << 8
diff --git a/include/libs/wal/wal.h b/include/libs/wal/wal.h
index 25566d5acb..7f779609eb 100644
--- a/include/libs/wal/wal.h
+++ b/include/libs/wal/wal.h
@@ -45,6 +45,7 @@ extern "C" {
 #define WAL_SCAN_BUF_SIZE (1024 * 1024 * 3)
 
 typedef enum {
+  TAOS_WAL_SKIP = 0,
   TAOS_WAL_WRITE = 1,
   TAOS_WAL_FSYNC = 2,
 } EWalType;
@@ -145,17 +146,18 @@ typedef struct SWalReader SWalReader;
 
 // todo hide this struct
 struct SWalReader {
-  SWal          *pWal;
-  int64_t        readerId;
-  TdFilePtr      pLogFile;
-  TdFilePtr      pIdxFile;
-  int64_t        curFileFirstVer;
-  int64_t        curVersion;
-  int64_t        skipToVersion; // skip data and jump to destination version, usually used by stream resume ignoring untreated data
+  SWal     *pWal;
+  int64_t   readerId;
+  TdFilePtr pLogFile;
+  TdFilePtr pIdxFile;
+  int64_t   curFileFirstVer;
+  int64_t   curVersion;
+  int64_t skipToVersion;  // skip data and jump to destination version, usually used by stream resume ignoring untreated
+                          // data
   int64_t        capacity;
   TdThreadMutex  mutex;
   SWalFilterCond cond;
-  SWalCkHead *pHead;
+  SWalCkHead    *pHead;
 };
 
 // module initialization
@@ -198,7 +200,7 @@ SWalReader *walOpenReader(SWal *, SWalFilterCond *pCond, int64_t id);
 void        walCloseReader(SWalReader *pRead);
 void        walReadReset(SWalReader *pReader);
 int32_t     walReadVer(SWalReader *pRead, int64_t ver);
-void        decryptBody(SWalCfg* cfg, SWalCkHead* pHead, int32_t plainBodyLen, const char* func);
+void        decryptBody(SWalCfg *cfg, SWalCkHead *pHead, int32_t plainBodyLen, const char *func);
 int32_t     walReaderSeekVer(SWalReader *pRead, int64_t ver);
 int32_t     walNextValidMsg(SWalReader *pRead);
 int64_t     walReaderGetCurrentVer(const SWalReader *pReader);
@@ -206,7 +208,7 @@ int64_t     walReaderGetValidFirstVer(const SWalReader *pReader);
 int64_t     walReaderGetSkipToVersion(SWalReader *pReader);
 void        walReaderSetSkipToVersion(SWalReader *pReader, int64_t ver);
 void        walReaderValidVersionRange(SWalReader *pReader, int64_t *sver, int64_t *ever);
-void        walReaderVerifyOffset(SWalReader *pWalReader, STqOffsetVal* pOffset);
+void        walReaderVerifyOffset(SWalReader *pWalReader, STqOffsetVal *pOffset);
 
 // only for tq usage
 int32_t walFetchHead(SWalReader *pRead, int64_t ver);
diff --git a/include/util/tdef.h b/include/util/tdef.h
index fecc1a332c..905a50886a 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -373,7 +373,7 @@ typedef enum ELogicConditionType {
 #define TSDB_MIN_FSYNC_PERIOD           0
 #define TSDB_MAX_FSYNC_PERIOD           180000  // millisecond
 #define TSDB_DEFAULT_FSYNC_PERIOD       3000    // three second
-#define TSDB_MIN_WAL_LEVEL              1
+#define TSDB_MIN_WAL_LEVEL              0
 #define TSDB_MAX_WAL_LEVEL              2
 #define TSDB_DEFAULT_WAL_LEVEL          1
 #define TSDB_MIN_PRECISION              TSDB_TIME_PRECISION_MILLI
diff --git a/source/client/src/clientTmq.c b/source/client/src/clientTmq.c
index 6c06ee853c..f5f083e5d8 100644
--- a/source/client/src/clientTmq.c
+++ b/source/client/src/clientTmq.c
@@ -826,7 +826,7 @@ void tmqSendHbReq(void* param, void* tmrId) {
       offRows->vgId = pVg->vgId;
       offRows->rows = pVg->numOfRows;
       offRows->offset = pVg->offsetInfo.endOffset;
-      offRows->ever = pVg->offsetInfo.walVerEnd;
+      offRows->ever = pVg->offsetInfo.walVerEnd == -1 ? 0 : pVg->offsetInfo.walVerEnd;
       char buf[TSDB_OFFSET_LEN] = {0};
       tFormatOffset(buf, TSDB_OFFSET_LEN, &offRows->offset);
       tscDebug("consumer:0x%" PRIx64 ",report offset, group:%s vgId:%d, offset:%s/%" PRId64 ", rows:%" PRId64,
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index 8b01d296a3..05f685ecb4 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -796,7 +796,13 @@ static int32_t mndTransSync(SMnode *pMnode, STrans *pTrans) {
 
 static bool mndCheckDbConflict(const char *conflict, STrans *pTrans) {
   if (conflict[0] == 0) return false;
-  if (strcasecmp(conflict, pTrans->dbname) == 0 || strcasecmp(conflict, pTrans->stbname) == 0) return true;
+  if (strcasecmp(conflict, pTrans->dbname) == 0) return true;
+  return false;
+}
+
+static bool mndCheckStbConflict(const char *conflict, STrans *pTrans) {
+  if (conflict[0] == 0) return false;
+  if (strcasecmp(conflict, pTrans->stbname) == 0) return true;
   return false;
 }
 
@@ -816,17 +822,17 @@ static bool mndCheckTransConflict(SMnode *pMnode, STrans *pNew) {
       if (pTrans->conflict == TRN_CONFLICT_GLOBAL) conflict = true;
       if (pTrans->conflict == TRN_CONFLICT_DB || pTrans->conflict == TRN_CONFLICT_DB_INSIDE) {
         if (mndCheckDbConflict(pNew->dbname, pTrans)) conflict = true;
-        if (mndCheckDbConflict(pNew->stbname, pTrans)) conflict = true;
+        if (mndCheckStbConflict(pNew->stbname, pTrans)) conflict = true;
       }
     }
     if (pNew->conflict == TRN_CONFLICT_DB_INSIDE) {
       if (pTrans->conflict == TRN_CONFLICT_GLOBAL) conflict = true;
       if (pTrans->conflict == TRN_CONFLICT_DB) {
         if (mndCheckDbConflict(pNew->dbname, pTrans)) conflict = true;
-        if (mndCheckDbConflict(pNew->stbname, pTrans)) conflict = true;
+        if (mndCheckStbConflict(pNew->stbname, pTrans)) conflict = true;
       }
       if (pTrans->conflict == TRN_CONFLICT_DB_INSIDE) {
-        if (mndCheckDbConflict(pNew->stbname, pTrans)) conflict = true;  // for stb
+        if (mndCheckStbConflict(pNew->stbname, pTrans)) conflict = true;  // for stb
       }
     }
 
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index b6673d6219..1c4dbaa9e1 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -6771,6 +6771,15 @@ static int32_t checkDbEnumOption(STranslateContext* pCxt, const char* pName, int
   return TSDB_CODE_SUCCESS;
 }
 
+static int32_t checkDbEnumOption3(STranslateContext* pCxt, const char* pName, int32_t val, int32_t v1, int32_t v2,
+                                  int32_t v3) {
+  if (val >= 0 && val != v1 && val != v2 && val != v3) {
+    return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_DB_OPTION,
+                                   "Invalid option %s: %d, only %d, %d, %d allowed", pName, val, v1, v2, v3);
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t checkDbRetentionsOption(STranslateContext* pCxt, SNodeList* pRetentions, int8_t precision) {
   if (NULL == pRetentions) {
     return TSDB_CODE_SUCCESS;
@@ -6914,7 +6923,12 @@ static int32_t checkOptionsDependency(STranslateContext* pCxt, const char* pDbNa
 
   if ((pOptions->replica == 2) ^ (pOptions->withArbitrator == TSDB_MAX_DB_WITH_ARBITRATOR)) {
     return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_DB_OPTION,
-                                   "Invalid database option, with_arbitrator should be used with replica 2");
+                                   "Invalid option, with_arbitrator should be used with replica 2");
+  }
+
+  if (pOptions->replica > 1 && pOptions->walLevel == 0) {
+    return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_DB_OPTION,
+                                   "Invalid option, wal_level 0 should be used with replica 1");
   }
 
   return TSDB_CODE_SUCCESS;
@@ -6978,7 +6992,8 @@ static int32_t checkDatabaseOptions(STranslateContext* pCxt, const char* pDbName
     code = checkDbStrictOption(pCxt, pOptions);
   }
   if (TSDB_CODE_SUCCESS == code) {
-    code = checkDbEnumOption(pCxt, "walLevel", pOptions->walLevel, TSDB_MIN_WAL_LEVEL, TSDB_MAX_WAL_LEVEL);
+    code = checkDbEnumOption3(pCxt, "walLevel", pOptions->walLevel, TSDB_MIN_WAL_LEVEL, TSDB_DEFAULT_WAL_LEVEL,
+                              TSDB_MAX_WAL_LEVEL);
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = checkDbRangeOption(pCxt, "vgroups", pOptions->numOfVgroups, TSDB_MIN_VNODES_PER_DB, TSDB_MAX_VNODES_PER_DB);
@@ -7252,6 +7267,15 @@ static void buildAlterDbReq(STranslateContext* pCxt, SAlterDatabaseStmt* pStmt,
 }
 
 static int32_t translateAlterDatabase(STranslateContext* pCxt, SAlterDatabaseStmt* pStmt) {
+  if (pStmt->pOptions->walLevel == 0) {
+    SDbCfgInfo dbCfg = {0};
+    int32_t    code = getDBCfg(pCxt, pStmt->dbName, &dbCfg);
+    if (TSDB_CODE_SUCCESS == code && dbCfg.replications > 1) {
+      return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_DB_OPTION,
+                                     "Invalid option, wal_level 0 should be used with replica 1");
+    }
+  }
+
   int32_t code = checkDatabaseOptions(pCxt, pStmt->dbName, pStmt->pOptions);
   if (TSDB_CODE_SUCCESS != code) {
     return code;
diff --git a/source/libs/parser/test/parAlterToBalanceTest.cpp b/source/libs/parser/test/parAlterToBalanceTest.cpp
index 84be1e92d0..4e7325c9b2 100644
--- a/source/libs/parser/test/parAlterToBalanceTest.cpp
+++ b/source/libs/parser/test/parAlterToBalanceTest.cpp
@@ -335,7 +335,7 @@ TEST_F(ParserInitialATest, alterDatabaseSemanticCheck) {
   run("ALTER DATABASE test KEEP 1000000000s", TSDB_CODE_PAR_INVALID_DB_OPTION);
   run("ALTER DATABASE test KEEP 1w", TSDB_CODE_PAR_INVALID_DB_OPTION);
   run("ALTER DATABASE test PAGES 63", TSDB_CODE_PAR_INVALID_DB_OPTION);
-  run("ALTER DATABASE test WAL_LEVEL 0", TSDB_CODE_PAR_INVALID_DB_OPTION);
+  //run("ALTER DATABASE test WAL_LEVEL 0", TSDB_CODE_PAR_INVALID_DB_OPTION);
   run("ALTER DATABASE test WAL_LEVEL 3", TSDB_CODE_PAR_INVALID_DB_OPTION);
   //run("ALTER DATABASE test REPLICA 2", TSDB_CODE_PAR_INVALID_DB_OPTION);
   run("ALTER DATABASE test STT_TRIGGER 0", TSDB_CODE_PAR_INVALID_DB_OPTION);
diff --git a/source/libs/wal/src/walMeta.c b/source/libs/wal/src/walMeta.c
index 08162ef158..ac33b1d6b7 100644
--- a/source/libs/wal/src/walMeta.c
+++ b/source/libs/wal/src/walMeta.c
@@ -20,7 +20,6 @@
 #include "tutil.h"
 #include "walInt.h"
 
-
 bool FORCE_INLINE walLogExist(SWal* pWal, int64_t ver) {
   return !walIsEmpty(pWal) && walGetFirstVer(pWal) <= ver && walGetLastVer(pWal) >= ver;
 }
@@ -154,7 +153,7 @@ static FORCE_INLINE int64_t walScanLogGetLastVer(SWal* pWal, int32_t fileIdx) {
 
       // validate body
       int32_t cryptedBodyLen = logContent->head.bodyLen;
-      if(pWal->cfg.encryptAlgorithm == DND_CA_SM4){
+      if (pWal->cfg.encryptAlgorithm == DND_CA_SM4) {
         cryptedBodyLen = ENCRYPTED_LEN(cryptedBodyLen);
       }
       recordLen = walCkHeadSz + cryptedBodyLen;
@@ -226,7 +225,7 @@ static FORCE_INLINE int64_t walScanLogGetLastVer(SWal* pWal, int32_t fileIdx) {
       goto _err;
     }
 
-    if (taosFsyncFile(pFile) < 0) {
+    if (pWal->cfg.level != TAOS_WAL_SKIP && taosFsyncFile(pFile) < 0) {
       wError("failed to fsync file due to %s. file:%s", strerror(errno), fnameStr);
       terrno = TAOS_SYSTEM_ERROR(errno);
       goto _err;
@@ -626,7 +625,7 @@ int walCheckAndRepairIdxFile(SWal* pWal, int32_t fileIdx) {
 
     int32_t plainBodyLen = ckHead.head.bodyLen;
     int32_t cryptedBodyLen = plainBodyLen;
-    if(pWal->cfg.encryptAlgorithm == DND_CA_SM4){
+    if (pWal->cfg.encryptAlgorithm == DND_CA_SM4) {
       cryptedBodyLen = ENCRYPTED_LEN(cryptedBodyLen);
     }
     idxEntry.offset += sizeof(SWalCkHead) + cryptedBodyLen;
@@ -636,7 +635,7 @@ int walCheckAndRepairIdxFile(SWal* pWal, int32_t fileIdx) {
              pWal->cfg.vgId, terrstr(), idxEntry.ver, idxEntry.offset, fLogNameStr);
       goto _err;
     }
-    if (taosWriteFile(pIdxFile, &idxEntry, sizeof(SWalIdxEntry)) < 0) {
+    if (pWal->cfg.level != TAOS_WAL_SKIP && taosWriteFile(pIdxFile, &idxEntry, sizeof(SWalIdxEntry)) < 0) {
       terrno = TAOS_SYSTEM_ERROR(errno);
       wError("vgId:%d, failed to append file since %s. file:%s", pWal->cfg.vgId, terrstr(), fnameStr);
       goto _err;
@@ -644,7 +643,7 @@ int walCheckAndRepairIdxFile(SWal* pWal, int32_t fileIdx) {
     count++;
   }
 
-  if (taosFsyncFile(pIdxFile) < 0) {
+  if (pWal->cfg.level != TAOS_WAL_SKIP && taosFsyncFile(pIdxFile) < 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     wError("vgId:%d, faild to fsync file since %s. file:%s", pWal->cfg.vgId, terrstr(), fnameStr);
     goto _err;
@@ -880,13 +879,13 @@ int walSaveMeta(SWal* pWal) {
   int  n;
 
   // fsync the idx and log file at first to ensure validity of meta
-  if (taosFsyncFile(pWal->pIdxFile) < 0) {
+  if (pWal->cfg.level != TAOS_WAL_SKIP && taosFsyncFile(pWal->pIdxFile) < 0) {
     wError("vgId:%d, failed to sync idx file due to %s", pWal->cfg.vgId, strerror(errno));
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
   }
 
-  if (taosFsyncFile(pWal->pLogFile) < 0) {
+  if (pWal->cfg.level != TAOS_WAL_SKIP && taosFsyncFile(pWal->pLogFile) < 0) {
     wError("vgId:%d, failed to sync log file due to %s", pWal->cfg.vgId, strerror(errno));
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
@@ -901,7 +900,8 @@ int walSaveMeta(SWal* pWal) {
     return -1;
   }
 
-  TdFilePtr pMetaFile = taosOpenFile(tmpFnameStr, TD_FILE_CREATE | TD_FILE_WRITE | TD_FILE_TRUNC | TD_FILE_WRITE_THROUGH);
+  TdFilePtr pMetaFile =
+      taosOpenFile(tmpFnameStr, TD_FILE_CREATE | TD_FILE_WRITE | TD_FILE_TRUNC | TD_FILE_WRITE_THROUGH);
   if (pMetaFile == NULL) {
     wError("vgId:%d, failed to open file due to %s. file:%s", pWal->cfg.vgId, strerror(errno), tmpFnameStr);
     terrno = TAOS_SYSTEM_ERROR(errno);
@@ -910,13 +910,13 @@ int walSaveMeta(SWal* pWal) {
 
   char* serialized = walMetaSerialize(pWal);
   int   len = strlen(serialized);
-  if (len != taosWriteFile(pMetaFile, serialized, len)) {
+  if (pWal->cfg.level != TAOS_WAL_SKIP && len != taosWriteFile(pMetaFile, serialized, len)) {
     wError("vgId:%d, failed to write file due to %s. file:%s", pWal->cfg.vgId, strerror(errno), tmpFnameStr);
     terrno = TAOS_SYSTEM_ERROR(errno);
     goto _err;
   }
 
-  if (taosFsyncFile(pMetaFile) < 0) {
+  if (pWal->cfg.level != TAOS_WAL_SKIP && taosFsyncFile(pMetaFile) < 0) {
     wError("vgId:%d, failed to sync file due to %s. file:%s", pWal->cfg.vgId, strerror(errno), tmpFnameStr);
     terrno = TAOS_SYSTEM_ERROR(errno);
     goto _err;
diff --git a/source/libs/wal/src/walSeek.c b/source/libs/wal/src/walSeek.c
index cbfd0ef741..0e452a937b 100644
--- a/source/libs/wal/src/walSeek.c
+++ b/source/libs/wal/src/walSeek.c
@@ -79,8 +79,7 @@ int64_t walChangeWrite(SWal* pWal, int64_t ver) {
   TdFilePtr pIdxTFile, pLogTFile;
   char      fnameStr[WAL_FILE_LEN];
   if (pWal->pLogFile != NULL) {
-    code = taosFsyncFile(pWal->pLogFile);
-    if (code != 0) {
+    if (pWal->cfg.level != TAOS_WAL_SKIP && (code = taosFsyncFile(pWal->pLogFile)) != 0) {
       terrno = TAOS_SYSTEM_ERROR(errno);
       return -1;
     }
@@ -91,8 +90,7 @@ int64_t walChangeWrite(SWal* pWal, int64_t ver) {
     }
   }
   if (pWal->pIdxFile != NULL) {
-    code = taosFsyncFile(pWal->pIdxFile);
-    if (code != 0) {
+    if (pWal->cfg.level != TAOS_WAL_SKIP && (code = taosFsyncFile(pWal->pIdxFile)) != 0) {
       terrno = TAOS_SYSTEM_ERROR(errno);
       return -1;
     }
diff --git a/source/libs/wal/src/walWrite.c b/source/libs/wal/src/walWrite.c
index 25fec4a998..19345e0644 100644
--- a/source/libs/wal/src/walWrite.c
+++ b/source/libs/wal/src/walWrite.c
@@ -13,12 +13,12 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "crypt.h"
 #include "os.h"
 #include "taoserror.h"
 #include "tchecksum.h"
 #include "tglobal.h"
 #include "walInt.h"
-#include "crypt.h"
 
 int32_t walRestoreFromSnapshot(SWal *pWal, int64_t ver) {
   taosThreadMutexLock(&pWal->mutex);
@@ -295,9 +295,9 @@ int32_t walEndSnapshot(SWal *pWal) {
   ver = TMAX(ver - pWal->vers.logRetention, pWal->vers.firstVer - 1);
 
   // compatible mode for refVer
-  bool hasTopic = false;
+  bool    hasTopic = false;
   int64_t refVer = INT64_MAX;
-  void *pIter = NULL;
+  void   *pIter = NULL;
   while (1) {
     pIter = taosHashIterate(pWal->pRefHash, pIter);
     if (pIter == NULL) break;
@@ -396,8 +396,7 @@ int32_t walRollImpl(SWal *pWal) {
   int32_t code = 0;
 
   if (pWal->pIdxFile != NULL) {
-    code = taosFsyncFile(pWal->pIdxFile);
-    if (code != 0) {
+    if (pWal->cfg.level != TAOS_WAL_SKIP && (code = taosFsyncFile(pWal->pIdxFile)) != 0) {
       terrno = TAOS_SYSTEM_ERROR(errno);
       goto END;
     }
@@ -409,8 +408,7 @@ int32_t walRollImpl(SWal *pWal) {
   }
 
   if (pWal->pLogFile != NULL) {
-    code = taosFsyncFile(pWal->pLogFile);
-    if (code != 0) {
+    if (pWal->cfg.level != TAOS_WAL_SKIP && (code = taosFsyncFile(pWal->pLogFile)) != 0) {
       terrno = TAOS_SYSTEM_ERROR(errno);
       goto END;
     }
@@ -510,12 +508,15 @@ static FORCE_INLINE int32_t walWriteImpl(SWal *pWal, int64_t index, tmsg_t msgTy
   wDebug("vgId:%d, wal write log %" PRId64 ", msgType: %s, cksum head %u cksum body %u", pWal->cfg.vgId, index,
          TMSG_INFO(msgType), pWal->writeHead.cksumHead, pWal->writeHead.cksumBody);
 
-  code = walWriteIndex(pWal, index, offset);
-  if (code < 0) {
-    goto END;
+  if (pWal->cfg.level != TAOS_WAL_SKIP) {
+    code = walWriteIndex(pWal, index, offset);
+    if (code < 0) {
+      goto END;
+    }
   }
 
-  if (taosWriteFile(pWal->pLogFile, &pWal->writeHead, sizeof(SWalCkHead)) != sizeof(SWalCkHead)) {
+  if (pWal->cfg.level != TAOS_WAL_SKIP &&
+      taosWriteFile(pWal->pLogFile, &pWal->writeHead, sizeof(SWalCkHead)) != sizeof(SWalCkHead)) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     wError("vgId:%d, file:%" PRId64 ".log, failed to write since %s", pWal->cfg.vgId, walGetLastFileFirstVer(pWal),
            strerror(errno));
@@ -524,17 +525,17 @@ static FORCE_INLINE int32_t walWriteImpl(SWal *pWal, int64_t index, tmsg_t msgTy
   }
 
   int32_t cyptedBodyLen = plainBodyLen;
-  char* buf = (char*)body;
-  char* newBody = NULL;
-  char* newBodyEncrypted = NULL;
+  char   *buf = (char *)body;
+  char   *newBody = NULL;
+  char   *newBodyEncrypted = NULL;
 
-  if(pWal->cfg.encryptAlgorithm == DND_CA_SM4){
+  if (pWal->cfg.encryptAlgorithm == DND_CA_SM4) {
     cyptedBodyLen = ENCRYPTED_LEN(cyptedBodyLen);
-    
+
     newBody = taosMemoryMalloc(cyptedBodyLen);
-    if(newBody == NULL){
+    if (newBody == NULL) {
       wError("vgId:%d, file:%" PRId64 ".log, failed to malloc since %s", pWal->cfg.vgId, walGetLastFileFirstVer(pWal),
-            strerror(errno));
+             strerror(errno));
       code = -1;
       goto END;
     }
@@ -542,11 +543,11 @@ static FORCE_INLINE int32_t walWriteImpl(SWal *pWal, int64_t index, tmsg_t msgTy
     memcpy(newBody, body, plainBodyLen);
 
     newBodyEncrypted = taosMemoryMalloc(cyptedBodyLen);
-    if(newBodyEncrypted == NULL){
+    if (newBodyEncrypted == NULL) {
       wError("vgId:%d, file:%" PRId64 ".log, failed to malloc since %s", pWal->cfg.vgId, walGetLastFileFirstVer(pWal),
-            strerror(errno));
+             strerror(errno));
       code = -1;
-      if(newBody != NULL) taosMemoryFreeClear(newBody);
+      if (newBody != NULL) taosMemoryFreeClear(newBody);
       goto END;
     }
 
@@ -559,29 +560,29 @@ static FORCE_INLINE int32_t walWriteImpl(SWal *pWal, int64_t index, tmsg_t msgTy
 
     int32_t count = CBC_Encrypt(&opts);
 
-    //wDebug("vgId:%d, file:%" PRId64 ".log, index:%" PRId64 ", CBC_Encrypt cryptedBodyLen:%d, plainBodyLen:%d, %s", 
-    //      pWal->cfg.vgId, walGetLastFileFirstVer(pWal), index, count, plainBodyLen, __FUNCTION__);
+    // wDebug("vgId:%d, file:%" PRId64 ".log, index:%" PRId64 ", CBC_Encrypt cryptedBodyLen:%d, plainBodyLen:%d, %s",
+    //       pWal->cfg.vgId, walGetLastFileFirstVer(pWal), index, count, plainBodyLen, __FUNCTION__);
 
     buf = newBodyEncrypted;
   }
-  
-  if (taosWriteFile(pWal->pLogFile, (char *)buf, cyptedBodyLen) != cyptedBodyLen) {
+
+  if (pWal->cfg.level != TAOS_WAL_SKIP && taosWriteFile(pWal->pLogFile, (char *)buf, cyptedBodyLen) != cyptedBodyLen) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     wError("vgId:%d, file:%" PRId64 ".log, failed to write since %s", pWal->cfg.vgId, walGetLastFileFirstVer(pWal),
            strerror(errno));
     code = -1;
-    if(pWal->cfg.encryptAlgorithm == DND_CA_SM4){
+    if (pWal->cfg.encryptAlgorithm == DND_CA_SM4) {
       taosMemoryFreeClear(newBody);
       taosMemoryFreeClear(newBodyEncrypted);
     }
     goto END;
   }
 
-  if(pWal->cfg.encryptAlgorithm == DND_CA_SM4){
+  if (pWal->cfg.encryptAlgorithm == DND_CA_SM4) {
     taosMemoryFreeClear(newBody);
-    taosMemoryFreeClear(newBodyEncrypted); 
-    //wInfo("vgId:%d, free newBody newBodyEncrypted %s", 
-    //      pWal->cfg.vgId, __FUNCTION__);   
+    taosMemoryFreeClear(newBodyEncrypted);
+    // wInfo("vgId:%d, free newBody newBodyEncrypted %s",
+    //       pWal->cfg.vgId, __FUNCTION__);
   }
 
   // set status
@@ -693,6 +694,10 @@ int32_t walWrite(SWal *pWal, int64_t index, tmsg_t msgType, const void *body, in
 }
 
 void walFsync(SWal *pWal, bool forceFsync) {
+  if (pWal->cfg.level == TAOS_WAL_SKIP) {
+    return;
+  }
+
   taosThreadMutexLock(&pWal->mutex);
   if (forceFsync || (pWal->cfg.level == TAOS_WAL_FSYNC && pWal->cfg.fsyncPeriod == 0)) {
     wTrace("vgId:%d, fileId:%" PRId64 ".log, do fsync", pWal->cfg.vgId, walGetCurFileFirstVer(pWal));
diff --git a/tests/army/enterprise/alter/alterConfig.py b/tests/army/alter/alterConfig.py
similarity index 100%
rename from tests/army/enterprise/alter/alterConfig.py
rename to tests/army/alter/alterConfig.py
diff --git a/tests/army/cluster/incSnapshot.py b/tests/army/cluster/incSnapshot.py
new file mode 100644
index 0000000000..dfd8d95c9c
--- /dev/null
+++ b/tests/army/cluster/incSnapshot.py
@@ -0,0 +1,110 @@
+import taos
+import sys
+import os
+import subprocess
+import glob
+import shutil
+import time
+
+from frame.log import *
+from frame.cases import *
+from frame.sql import *
+from frame.srvCtl import *
+from frame.caseBase import *
+from frame import *
+from frame.autogen import *
+# from frame.server.dnodes import *
+# from frame.server.cluster import *
+
+
+class TDTestCase(TBase):
+    updatecfgDict = {
+        'slowLogScope':"query"
+    }
+
+    def init(self, conn, logSql, replicaVar=3):
+        super(TDTestCase, self).init(conn, logSql, replicaVar=3, db="snapshot", checkColName="c1")
+        self.valgrind = 0
+        self.childtable_count = 10
+        # tdSql.init(conn.cursor())
+        tdSql.init(conn.cursor(), logSql)  # output sql.txt file
+
+    def run(self):
+        tdSql.prepare()
+        autoGen = AutoGen()
+        autoGen.create_db(self.db, 2, 3)
+        tdSql.execute(f"use {self.db}")
+        autoGen.create_stable(self.stb, 5, 10, 8, 8)
+        autoGen.create_child(self.stb, "d", self.childtable_count)
+        autoGen.insert_data(1000)
+        tdSql.execute(f"flush database {self.db}")
+        sc.dnodeStop(3)
+        # clusterDnodes.stoptaosd(1)
+        # clusterDnodes.starttaosd(3)
+        # time.sleep(5)
+        # clusterDnodes.stoptaosd(2)
+        # clusterDnodes.starttaosd(1)
+        # time.sleep(5)
+        autoGen.insert_data(5000, True)
+        self.flushDb(True)
+        # wait flush operation over
+        time.sleep(5)
+
+        # sql = 'show vnodes;'
+        # while True:
+        #     bFinish = True
+        #     param_list = tdSql.query(sql, row_tag=True)
+        #     for param in param_list:
+        #         if param[3] == 'leading' or param[3] == 'following':
+        #             bFinish = False
+        #             break
+        #     if bFinish:
+        #         break
+        self.snapshotAgg()
+        time.sleep(10)
+        sc.dnodeStopAll()
+        for i in range(1, 4):
+            path = clusterDnodes.getDnodeDir(i)
+            dnodesRootDir = os.path.join(path,"data","vnode", "vnode*")
+            dirs = glob.glob(dnodesRootDir)
+            for dir in dirs:
+                if os.path.isdir(dir):
+                    self.remove_directory(os.path.join(dir, "wal"))
+
+        sc.dnodeStart(1)
+        sc.dnodeStart(2)
+        sc.dnodeStart(3)
+        sql = "show vnodes;"
+        time.sleep(10)
+        while True:
+            bFinish = True
+            param_list = tdSql.query(sql, row_tag=True)
+            for param in param_list:
+                if param[3] == 'offline':
+                    tdLog.exit(
+                        "dnode synchronous fail dnode id: %d, vgroup id:%d status offline" % (param[0], param[1]))
+                if param[3] == 'leading' or param[3] == 'following':
+                    bFinish = False
+                    break
+            if bFinish:
+                break
+
+        self.timestamp_step = 1000
+        self.insert_rows = 6000
+        self.checkInsertCorrect()
+        self.checkAggCorrect()
+
+    def remove_directory(self, directory):
+        try:
+            shutil.rmtree(directory)
+            tdLog.debug("delete dir: %s " % (directory))
+        except OSError as e:
+            tdLog.exit("delete fail dir: %s " % (directory))
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success(f"{__file__} successfully executed")
+
+
+tdCases.addLinux(__file__, TDTestCase())
+tdCases.addWindows(__file__, TDTestCase())
diff --git a/tests/army/community/cluster/snapshot.json b/tests/army/cluster/snapshot.json
similarity index 100%
rename from tests/army/community/cluster/snapshot.json
rename to tests/army/cluster/snapshot.json
diff --git a/tests/army/community/cluster/snapshot.py b/tests/army/cluster/snapshot.py
similarity index 100%
rename from tests/army/community/cluster/snapshot.py
rename to tests/army/cluster/snapshot.py
diff --git a/tests/army/community/cluster/splitVgroupByLearner.json b/tests/army/cluster/splitVgroupByLearner.json
similarity index 100%
rename from tests/army/community/cluster/splitVgroupByLearner.json
rename to tests/army/cluster/splitVgroupByLearner.json
diff --git a/tests/army/community/cluster/splitVgroupByLearner.py b/tests/army/cluster/splitVgroupByLearner.py
similarity index 100%
rename from tests/army/community/cluster/splitVgroupByLearner.py
rename to tests/army/cluster/splitVgroupByLearner.py
diff --git a/tests/army/community/cmdline/fullopt.py b/tests/army/cmdline/fullopt.py
similarity index 100%
rename from tests/army/community/cmdline/fullopt.py
rename to tests/army/cmdline/fullopt.py
diff --git a/tests/army/enterprise/db-encrypt/basic.py b/tests/army/db-encrypt/basic.py
similarity index 100%
rename from tests/army/enterprise/db-encrypt/basic.py
rename to tests/army/db-encrypt/basic.py
diff --git a/tests/army/frame/etime.py b/tests/army/frame/etime.py
index 2ee223e122..808ebaf3b0 100644
--- a/tests/army/frame/etime.py
+++ b/tests/army/frame/etime.py
@@ -19,5 +19,3 @@ import sys
 import os
 import time
 import datetime
-
-
diff --git a/tests/army/frame/eutil.py b/tests/army/frame/eutil.py
new file mode 100644
index 0000000000..a32e6e9a38
--- /dev/null
+++ b/tests/army/frame/eutil.py
@@ -0,0 +1,28 @@
+###################################################################
+#           Copyright (c) 2023 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+#
+# about tools funciton extension
+#
+
+import sys
+import os
+import time
+import datetime
+import psutil
+
+
+# cpu frequent as random
+def cpuRand(max):
+    decimal = int(str(psutil.cpu_freq().current).split(".")[1])
+    return decimal % max
\ No newline at end of file
diff --git a/tests/army/community/insert/insert_basic.py b/tests/army/insert/insert_basic.py
similarity index 100%
rename from tests/army/community/insert/insert_basic.py
rename to tests/army/insert/insert_basic.py
diff --git a/tests/army/community/insert/test_column_tag_boundary.py b/tests/army/insert/test_column_tag_boundary.py
similarity index 100%
rename from tests/army/community/insert/test_column_tag_boundary.py
rename to tests/army/insert/test_column_tag_boundary.py
diff --git a/tests/army/enterprise/multi-level/mlevel_basic.json b/tests/army/multi-level/mlevel_basic.json
similarity index 100%
rename from tests/army/enterprise/multi-level/mlevel_basic.json
rename to tests/army/multi-level/mlevel_basic.json
diff --git a/tests/army/enterprise/multi-level/mlevel_basic.py b/tests/army/multi-level/mlevel_basic.py
similarity index 100%
rename from tests/army/enterprise/multi-level/mlevel_basic.py
rename to tests/army/multi-level/mlevel_basic.py
diff --git a/tests/army/community/query/accuracy/test_query_accuracy.py b/tests/army/query/accuracy/test_query_accuracy.py
similarity index 100%
rename from tests/army/community/query/accuracy/test_query_accuracy.py
rename to tests/army/query/accuracy/test_query_accuracy.py
diff --git a/tests/army/community/query/cquery_basic.json b/tests/army/query/cquery_basic.json
similarity index 100%
rename from tests/army/community/query/cquery_basic.json
rename to tests/army/query/cquery_basic.json
diff --git a/tests/army/community/query/fill/fill_desc.py b/tests/army/query/fill/fill_desc.py
similarity index 100%
rename from tests/army/community/query/fill/fill_desc.py
rename to tests/army/query/fill/fill_desc.py
diff --git a/tests/army/community/query/function/test_func_elapsed.py b/tests/army/query/function/test_func_elapsed.py
similarity index 100%
rename from tests/army/community/query/function/test_func_elapsed.py
rename to tests/army/query/function/test_func_elapsed.py
diff --git a/tests/army/community/query/query_basic.json b/tests/army/query/query_basic.json
similarity index 100%
rename from tests/army/community/query/query_basic.json
rename to tests/army/query/query_basic.json
diff --git a/tests/army/community/query/query_basic.py b/tests/army/query/query_basic.py
similarity index 100%
rename from tests/army/community/query/query_basic.py
rename to tests/army/query/query_basic.py
diff --git a/tests/army/community/query/show.py b/tests/army/query/show.py
similarity index 100%
rename from tests/army/community/query/show.py
rename to tests/army/query/show.py
diff --git a/tests/army/community/query/subquery/subqueryBugs.py b/tests/army/query/subquery/subqueryBugs.py
similarity index 100%
rename from tests/army/community/query/subquery/subqueryBugs.py
rename to tests/army/query/subquery/subqueryBugs.py
diff --git a/tests/army/community/query/test_compare.py b/tests/army/query/test_compare.py
similarity index 100%
rename from tests/army/community/query/test_compare.py
rename to tests/army/query/test_compare.py
diff --git a/tests/army/community/query/test_join.py b/tests/army/query/test_join.py
similarity index 100%
rename from tests/army/community/query/test_join.py
rename to tests/army/query/test_join.py
diff --git a/tests/army/enterprise/s3/s3Basic.json b/tests/army/s3/s3Basic.json
similarity index 100%
rename from tests/army/enterprise/s3/s3Basic.json
rename to tests/army/s3/s3Basic.json
diff --git a/tests/army/enterprise/s3/s3Basic.py b/tests/army/s3/s3Basic.py
similarity index 97%
rename from tests/army/enterprise/s3/s3Basic.py
rename to tests/army/s3/s3Basic.py
index 9634b8edb0..f94fe611a6 100644
--- a/tests/army/enterprise/s3/s3Basic.py
+++ b/tests/army/s3/s3Basic.py
@@ -19,6 +19,7 @@ import taos
 import frame
 import frame.etool
 import frame.eos
+import frame.eutil
 
 from frame.log import *
 from frame.cases import *
@@ -46,17 +47,20 @@ for test:
 
 
 class TDTestCase(TBase):
+    index = eutil.cpuRand(20) + 1
+    bucketName = f"ci-bucket{index}"
     updatecfgDict = {
         "supportVnodes":"1000",
         's3EndPoint': 'http://192.168.1.52:9000', 
         's3AccessKey': 'zOgllR6bSnw2Ah3mCNel:cdO7oXAu3Cqdb1rUdevFgJMi0LtRwCXdWKQx4bhX', 
-        's3BucketName': 'ci-bucket',
+        's3BucketName': f'{bucketName}',
         's3PageCacheSize': '10240',
         "s3UploadDelaySec": "10",
         's3MigrateIntervalSec': '600',
         's3MigrateEnabled': '1'
     }
 
+    tdLog.info(f"assign bucketName is {bucketName}\n")
     maxFileSize = (128 + 10) * 1014 * 1024 # add 10M buffer
 
     def insertData(self):
@@ -241,10 +245,9 @@ class TDTestCase(TBase):
 
     #
     def preDb(self, vgroups):
-
-        cnt = int(time.time())%3 + 1
+        cnt = int(time.time())%2 + 1
         for i in range(cnt):
-             vg = int(time.time()*1000)%10 + 1
+             vg = eutil.cpuRand(9) + 1
              sql = f"create database predb vgroups {vg}"
              tdSql.execute(sql, show=True)
              sql = "drop database predb"
diff --git a/tests/army/enterprise/s3/s3Basic1.json b/tests/army/s3/s3Basic1.json
similarity index 100%
rename from tests/army/enterprise/s3/s3Basic1.json
rename to tests/army/s3/s3Basic1.json
diff --git a/tests/army/community/storage/compressBasic.py b/tests/army/storage/compressBasic.py
similarity index 100%
rename from tests/army/community/storage/compressBasic.py
rename to tests/army/storage/compressBasic.py
diff --git a/tests/army/community/storage/oneStageComp.json b/tests/army/storage/oneStageComp.json
similarity index 100%
rename from tests/army/community/storage/oneStageComp.json
rename to tests/army/storage/oneStageComp.json
diff --git a/tests/army/community/storage/oneStageComp.py b/tests/army/storage/oneStageComp.py
similarity index 100%
rename from tests/army/community/storage/oneStageComp.py
rename to tests/army/storage/oneStageComp.py
diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index 12f2ee1689..1eaf17ccb1 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -10,26 +10,26 @@
 #
 # army-test
 #
-,,y,army,./pytest.sh python3 ./test.py -f enterprise/multi-level/mlevel_basic.py -N 3 -L 3 -D 2
-,,y,army,./pytest.sh python3 ./test.py -f enterprise/db-encrypt/basic.py
-,,n,army,python3 ./test.py -f enterprise/s3/s3Basic.py -N 3
-,,y,army,./pytest.sh python3 ./test.py -f community/cluster/snapshot.py -N 3 -L 3 -D 2
-,,y,army,./pytest.sh python3 ./test.py -f community/query/function/test_func_elapsed.py
-,,y,army,./pytest.sh python3 ./test.py -f community/query/test_join.py
-,,y,army,./pytest.sh python3 ./test.py -f community/query/test_compare.py
-,,y,army,./pytest.sh python3 ./test.py -f community/insert/test_column_tag_boundary.py
-,,y,army,./pytest.sh python3 ./test.py -f community/query/fill/fill_desc.py -N 3 -L 3 -D 2
-,,y,army,./pytest.sh python3 ./test.py -f community/cluster/incSnapshot.py -N 3
-,,y,army,./pytest.sh python3 ./test.py -f community/query/query_basic.py -N 3
-,,y,army,./pytest.sh python3 ./test.py -f community/query/accuracy/test_query_accuracy.py
-,,y,army,./pytest.sh python3 ./test.py -f community/insert/insert_basic.py -N 3
-,,y,army,./pytest.sh python3 ./test.py -f community/cluster/splitVgroupByLearner.py -N 3
-,,n,army,python3 ./test.py -f community/cmdline/fullopt.py
-,,n,army,python3 ./test.py -f community/query/show.py -N 3
-,,n,army,python3 ./test.py -f enterprise/alter/alterConfig.py -N 3
-,,y,army,./pytest.sh python3 ./test.py -f community/query/subquery/subqueryBugs.py -N 3
-,,y,army,./pytest.sh python3 ./test.py -f community/storage/oneStageComp.py -N 3 -L 3 -D 1
-,,y,army,./pytest.sh python3 ./test.py -f community/storage/compressBasic.py -N 3
+,,y,army,./pytest.sh python3 ./test.py -f multi-level/mlevel_basic.py -N 3 -L 3 -D 2
+,,y,army,./pytest.sh python3 ./test.py -f db-encrypt/basic.py
+,,n,army,python3 ./test.py -f s3/s3Basic.py -N 3
+,,y,army,./pytest.sh python3 ./test.py -f cluster/snapshot.py -N 3 -L 3 -D 2
+,,y,army,./pytest.sh python3 ./test.py -f query/function/test_func_elapsed.py
+,,y,army,./pytest.sh python3 ./test.py -f query/test_join.py
+,,y,army,./pytest.sh python3 ./test.py -f query/test_compare.py
+,,y,army,./pytest.sh python3 ./test.py -f insert/test_column_tag_boundary.py
+,,y,army,./pytest.sh python3 ./test.py -f query/fill/fill_desc.py -N 3 -L 3 -D 2
+,,y,army,./pytest.sh python3 ./test.py -f cluster/incSnapshot.py -N 3
+,,y,army,./pytest.sh python3 ./test.py -f query/query_basic.py -N 3
+,,y,army,./pytest.sh python3 ./test.py -f query/accuracy/test_query_accuracy.py
+,,y,army,./pytest.sh python3 ./test.py -f insert/insert_basic.py -N 3
+,,y,army,./pytest.sh python3 ./test.py -f cluster/splitVgroupByLearner.py -N 3
+,,n,army,python3 ./test.py -f cmdline/fullopt.py
+,,n,army,python3 ./test.py -f query/show.py -N 3
+,,n,army,python3 ./test.py -f alter/alterConfig.py -N 3
+,,y,army,./pytest.sh python3 ./test.py -f query/subquery/subqueryBugs.py -N 3
+,,y,army,./pytest.sh python3 ./test.py -f storage/oneStageComp.py -N 3 -L 3 -D 1
+,,y,army,./pytest.sh python3 ./test.py -f storage/compressBasic.py -N 3
 
 #
 # system test
diff --git a/tests/script/tsim/db/create_all_options.sim b/tests/script/tsim/db/create_all_options.sim
index 71aa763662..e4f29cc74e 100644
--- a/tests/script/tsim/db/create_all_options.sim
+++ b/tests/script/tsim/db/create_all_options.sim
@@ -49,7 +49,7 @@ print ============= create database with all options
 #  | KEEP value         [max(1d ~ 365000d), default: 1d, unit may be minut/hour/day]
 #  | PRECISION          ['ms' | 'us' | 'ns', default: ms]
 #  | REPLICA value      [1 | 3, default: 1]
-#  | WAL_LEVEL value          [1 | 2, default: 1]
+#  | WAL_LEVEL value          [0 | 1 | 2, default: 1]
 #  | VGROUPS value      [default: 2]
 #  | SINGLE_STABLE      [0 | 1, default: ]
 #
@@ -404,7 +404,7 @@ endi
 sql drop database db
 sql_error create database db WAL_LEVEL 3
 sql_error create database db WAL_LEVEL -1
-sql_error create database db WAL_LEVEL 0
+#sql_error create database db WAL_LEVEL 0
 
 print ====> VGROUPS value [1~4096, default: 2]
 sql create database db VGROUPS 1
diff --git a/tests/script/tsim/parser/create_db.sim b/tests/script/tsim/parser/create_db.sim
index a5722f9819..5cb659586c 100644
--- a/tests/script/tsim/parser/create_db.sim
+++ b/tests/script/tsim/parser/create_db.sim
@@ -225,7 +225,7 @@ sql_error create database $db ctime 29
 sql_error create database $db ctime 40961
 
 # wal {0, 2}
-sql_error create database testwal wal_level 0
+#sql_error create database testwal wal_level 0
 sql select * from information_schema.ins_databases
 if $rows != 2 then
   return -1
diff --git a/tests/system-test/0-others/fsync.py b/tests/system-test/0-others/fsync.py
index 04a9f5c941..a1f51d1d1e 100644
--- a/tests/system-test/0-others/fsync.py
+++ b/tests/system-test/0-others/fsync.py
@@ -148,7 +148,7 @@ class TDTestCase:
     @property
     def fsync_create_err(self):
         return [
-            "create database db1 wal_level 0",
+            #"create database db1 wal_level 0",
             "create database db1 wal_level 3",
             "create database db1 wal_level null",
             "create database db1 wal_level true",
@@ -162,7 +162,7 @@ class TDTestCase:
     @property
     def fsync_alter_err(self):
         return [
-            "alter database db1 wal_level 0",
+            #"alter database db1 wal_level 0",
             "alter database db1 wal_level 3",
             "alter database db1 wal_level null",
             "alter database db1 wal_level true",
diff --git a/tests/system-test/2-query/count.py b/tests/system-test/2-query/count.py
index 155cb39b62..79196b7fe3 100644
--- a/tests/system-test/2-query/count.py
+++ b/tests/system-test/2-query/count.py
@@ -257,10 +257,10 @@ class TDTestCase:
         os.system(f'taos -f {sql_file}')
         tdSql.query('select count(c_1) from d2.t2 where c_1 < 10', queryTimes=1)
         tdSql.checkData(0, 0, 0)
-        tdSql.query('select count(c_1), min(c_1),tbname from d2.can partition by tbname', queryTimes=1)
+        tdSql.query('select count(c_1), min(c_1),tbname from d2.can partition by tbname order by 3', queryTimes=1)
         tdSql.checkData(0, 0, 0)
         tdSql.checkData(0, 1, None)
-        tdSql.checkData(0, 2, 't3')
+        tdSql.checkData(0, 2, 't1')
 
         tdSql.checkData(1, 0, 15)
         tdSql.checkData(1, 1, 1471617148940980000)
@@ -268,7 +268,7 @@ class TDTestCase:
 
         tdSql.checkData(2, 0, 0)
         tdSql.checkData(2, 1, None)
-        tdSql.checkData(2, 2, 't1')
+        tdSql.checkData(2, 2, 't3')
 
     def run(self):
         self.test_count_with_sma_data()
diff --git a/utils/test/c/sml_test.c b/utils/test/c/sml_test.c
index 5e9d82e71e..f91b14b6d8 100644
--- a/utils/test/c/sml_test.c
+++ b/utils/test/c/sml_test.c
@@ -982,6 +982,9 @@ int smlProcess_18784_Test() {
     rowIndex++;
   }
   taos_free_result(pRes);
+  pRes = taos_query(taos, "drop database if exists db_18784");
+  taos_free_result(pRes);
+
   taos_close(taos);
 
   return code;
@@ -1187,6 +1190,9 @@ int sml_ts2164_Test() {
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
   int code = taos_errno(pRes);
   taos_free_result(pRes);
+  pRes = taos_query(taos, "drop database if exists line_test");
+  taos_free_result(pRes);
+
   taos_close(taos);
 
   return code;
@@ -1236,6 +1242,8 @@ int sml_ts3116_Test() {
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
   code = taos_errno(pRes);
   taos_free_result(pRes);
+  pRes = taos_query(taos, "drop database if exists ts3116");
+  taos_free_result(pRes);
   taos_close(taos);
 
   return code;
@@ -1449,6 +1457,13 @@ int sml_td24070_Test() {
   code = taos_errno(pRes);
   ASSERT(code == 0);
   taos_free_result(pRes);
+
+  pRes = taos_query(taos, "drop database if exists td24070_write");
+  taos_free_result(pRes);
+
+  pRes = taos_query(taos, "drop database if exists td24070_read");
+  taos_free_result(pRes);
+
   taos_close(taos);
   // test table privilege
 
@@ -1477,6 +1492,10 @@ int sml_td23881_Test() {
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
   int code = taos_errno(pRes);
   taos_free_result(pRes);
+
+  pRes = taos_query(taos, "drop database if exists line_23881");
+  taos_free_result(pRes);
+
   taos_close(taos);
 
   return code;
@@ -1691,6 +1710,8 @@ int sml_ts2385_Test() {
 
   code = taos_errno(pRes);
   taos_free_result(pRes);
+  pRes = taos_query(taos, "drop database if exists ts2385");
+  taos_free_result(pRes);
   taos_close(taos);
 
   return code;
@@ -1784,6 +1805,9 @@ int sml_td24559_Test() {
   }
   taos_free_result(pRes);
 
+  pRes = taos_query(taos, "drop database if exists td24559");
+  taos_free_result(pRes);
+
   taos_close(taos);
 
   return code;
@@ -1889,6 +1913,9 @@ int sml_td29691_Test() {
   ASSERT(code == TSDB_CODE_PAR_DUPLICATED_COLUMN);
   taos_free_result(pRes);
 
+  pRes = taos_query(taos, "drop database if exists td29691");
+  taos_free_result(pRes);
+
   taos_close(taos);
 
   return code;
@@ -1942,6 +1969,9 @@ int sml_td18789_Test() {
   }
   taos_free_result(pRes);
 
+  pRes = taos_query(taos, "drop database if exists td18789");
+  taos_free_result(pRes);
+
   taos_close(taos);
 
   return code;
@@ -2047,6 +2077,9 @@ int sml_td29373_Test() {
   ASSERT(code == TSDB_CODE_SML_NOT_SUPPORT_PK);
   taos_free_result(pRes);
 
+  pRes = taos_query(taos, "drop database if exists td29373");
+  taos_free_result(pRes);
+
   taos_close(taos);
 
   return code;