diff --git a/src/tsdb/src/tsdbBuffer.c b/src/tsdb/src/tsdbBuffer.c
index 686fc4bbec512864e2249d741504af2e5f7596b0..16f06c82bbf310eb94ab389d6c8d028d8d4b160c 100644
--- a/src/tsdb/src/tsdbBuffer.c
+++ b/src/tsdb/src/tsdbBuffer.c
@@ -124,6 +124,7 @@ SListNode *tsdbAllocBufBlockFromPool(STsdbRepo *pRepo) {
   }
 
   SListNode *    pNode = tdListPopHead(pBufPool->bufBlockList);
+  ASSERT(pNode != NULL);
   STsdbBufBlock *pBufBlock = NULL;
   tdListNodeGetData(pBufPool->bufBlockList, pNode, (void *)(&pBufBlock));
 
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index ffac8da944009c14c887917a45bc1cb5f3f5bc7f..8ebb62f341e77b0449a21942a59894b2f2a924cf 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -358,7 +358,9 @@ void tsdbRemoveFileGroup(STsdbRepo *pRepo, SFileGroup *pFGroup) {
   ASSERT(pFileH->nFGroups >= 0);
 
   for (int type = TSDB_FILE_TYPE_HEAD; type < TSDB_FILE_TYPE_MAX; type++) {
-    remove(fileGroup.files[type].fname);
+    if (remove(fileGroup.files[type].fname) < 0) {
+      tsdbError("vgId:%d failed to remove file %s", REPO_ID(pRepo), fileGroup.files[type].fname);
+    }
     tsdbDestroyFile(&fileGroup.files[type]);
   }
 }
diff --git a/src/tsdb/src/tsdbMain.c b/src/tsdb/src/tsdbMain.c
index 80e5e8ea0d6419c631acb742d51a7217f7b83b3b..ac334e8ed1be576057ee11b8ae8bb65b5080759e 100644
--- a/src/tsdb/src/tsdbMain.c
+++ b/src/tsdb/src/tsdbMain.c
@@ -237,12 +237,13 @@ uint32_t tsdbGetFileInfo(TSDB_REPO_T *repo, char *name, uint32_t *index, uint32_
       }
 
       SFile *pFile = &pFGroup->files[(*index) % 3];
-      strcpy(fname, pFile->fname);
+      fname = strdup(pFile->fname);
     }
   }
 
   if (stat(fname, &fState) < 0) {
     tfree(sdup);
+    tfree(fname);
     return 0;
   }
 
@@ -566,7 +567,7 @@ static int32_t tsdbSaveConfig(char *rootDir, STsdbCfg *pCfg) {
 
 _err:
   tfree(fname);
-  if (fd > 0) close(fd);
+  if (fd >= 0) close(fd);
   return -1;
 }
 
@@ -609,7 +610,7 @@ static int tsdbLoadConfig(char *rootDir, STsdbCfg *pCfg) {
 
 _err:
   tfree(fname);
-  if (fd > 0) close(fd);
+  if (fd >= 0) close(fd);
   return -1;
 }
 
diff --git a/src/tsdb/src/tsdbMemTable.c b/src/tsdb/src/tsdbMemTable.c
index e928cdc385de1eb77f128e931340d5e2c14043f8..b1de90bc291cc909b51154b3f54e0d59a0278005 100644
--- a/src/tsdb/src/tsdbMemTable.c
+++ b/src/tsdb/src/tsdbMemTable.c
@@ -222,11 +222,12 @@ int tsdbAsyncCommit(STsdbRepo *pRepo) {
       terrno = TAOS_SYSTEM_ERROR(errno);
       return -1;
     }
+    pRepo->commit = 0;
   }
 
   ASSERT(pRepo->commit == 0);
-  if (pRepo->appH.notifyStatus) pRepo->appH.notifyStatus(pRepo->appH.appH, TSDB_STATUS_COMMIT_START);
   if (pRepo->mem != NULL) {
+    if (pRepo->appH.notifyStatus) pRepo->appH.notifyStatus(pRepo->appH.appH, TSDB_STATUS_COMMIT_START);
     if (tsdbLockRepo(pRepo) < 0) return -1;
     pRepo->imem = pRepo->mem;
     pRepo->mem = NULL;
@@ -468,9 +469,6 @@ _err:
 
 static void tsdbEndCommit(STsdbRepo *pRepo) {
   ASSERT(pRepo->commit == 1);
-  tsdbLockRepo(pRepo);
-  pRepo->commit = 0;
-  tsdbUnlockRepo(pRepo);
   if (pRepo->appH.notifyStatus) pRepo->appH.notifyStatus(pRepo->appH.appH, TSDB_STATUS_COMMIT_OVER);
 }
 
@@ -526,8 +524,6 @@ static int tsdbCommitToFile(STsdbRepo *pRepo, int fid, SCommitIter *iters, SRWHe
     goto _err;
   }
 
-  free(dataDir);
-
   // Open files for write/read
   if (tsdbSetAndOpenHelperFile(pHelper, pGroup) < 0) {
     tsdbError("vgId:%d failed to set helper file since %s", REPO_ID(pRepo), tstrerror(terrno));
@@ -601,7 +597,7 @@ static int tsdbCommitToFile(STsdbRepo *pRepo, int fid, SCommitIter *iters, SRWHe
   return 0;
 
 _err:
-  // ASSERT(false);
+  tfree(dataDir);
   tsdbCloseHelperFile(pHelper, 1);
   return -1;
 }
diff --git a/src/tsdb/src/tsdbMeta.c b/src/tsdb/src/tsdbMeta.c
index beb8f33052d66c46727208e876ca75293acdc565..83392462abe7c39e2733d13fdd719df3372f0489 100644
--- a/src/tsdb/src/tsdbMeta.c
+++ b/src/tsdb/src/tsdbMeta.c
@@ -147,6 +147,7 @@ int tsdbDropTable(TSDB_REPO_T *repo, STableId tableId) {
       tsdbInsertTableAct(pRepo, TSDB_DROP_META, buf, tTable);
       tsdbRemoveTableFromMeta(pRepo, tTable, false, true);
     }
+    tSkipListDestroyIter(pIter);
   }
 
   tsdbRemoveTableFromMeta(pRepo, pTable, true, true);
@@ -270,7 +271,6 @@ STableCfg *tsdbCreateTableCfgFromMsg(SMDCreateTableMsg *pMsg) {
 _err:
   tdDestroyTSchemaBuilder(&schemaBuilder);
   tsdbClearTableCfg(pCfg);
-  tfree(pCfg);
   return NULL;
 }
 
@@ -309,6 +309,7 @@ int tsdbUpdateTagValue(TSDB_REPO_T *repo, SUpdateTableTagValMsg *pMsg) {
 
     int32_t code = tsdbUpdateTable(pRepo, super, pTableCfg);
     if (code != TSDB_CODE_SUCCESS) {
+      tsdbClearTableCfg(pTableCfg);
       return code;
     }
     tsdbClearTableCfg(pTableCfg);