diff --git a/source/common/src/tname.c b/source/common/src/tname.c
index 7c9f476f4395ef9591efece2f22ee43084ed1747..887c449c56e9758412dbc201bf625f3a80281c2c 100644
--- a/source/common/src/tname.c
+++ b/source/common/src/tname.c
@@ -262,21 +262,11 @@ int32_t tNameFromString(SName* dst, const char* str, uint32_t type) {
     char* start = (char*)((p == NULL) ? str : (p + 1));
 
     int32_t len = 0;
-    if (TS_ESCAPE_CHAR == *start) {
-      ++start;
-      char* end = start;
-      while ('`' != *end) {
-        ++end;
-      }
-      len = end - start;
-      p = ++end;
+    p = strstr(start, TS_PATH_DELIMITER);
+    if (p == NULL) {
+      len = (int32_t)strlen(start);
     } else {
-      p = strstr(start, TS_PATH_DELIMITER);
-      if (p == NULL) {
-        len = (int32_t)strlen(start);
-      } else {
-        len = (int32_t)(p - start);
-      }
+      len = (int32_t)(p - start);
     }
 
     // too long account id or too long db name
@@ -294,10 +284,6 @@ int32_t tNameFromString(SName* dst, const char* str, uint32_t type) {
 
     // too long account id or too long db name
     int32_t len = (int32_t)strlen(start);
-    if (TS_ESCAPE_CHAR == *start) {
-      len -= 2;
-      ++start;
-    }
     if ((len >= tListLen(dst->tname)) || (len <= 0)) {
       return -1;
     }
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 1930adcfa41bf0516d9af027e4767cefba091c37..c21cc65142ce633e24c2b237f38a4d56b20cd513 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -3344,6 +3344,10 @@ static int32_t checkDatabaseOptions(STranslateContext* pCxt, const char* pDbName
 }
 
 static int32_t checkCreateDatabase(STranslateContext* pCxt, SCreateDatabaseStmt* pStmt) {
+  if (NULL != strchr(pStmt->dbName, '.')) {
+    return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_IDENTIFIER_NAME,
+                                   "The database name cannot contain '.'");
+  }
   return checkDatabaseOptions(pCxt, pStmt->dbName, pStmt->pOptions);
 }
 
diff --git a/source/libs/parser/src/parUtil.c b/source/libs/parser/src/parUtil.c
index 44d8784b7fd76818664ae12f9e2b8681a96a83d3..e51800aece4cdb4bdaee5386490277b65ec366f5 100644
--- a/source/libs/parser/src/parUtil.c
+++ b/source/libs/parser/src/parUtil.c
@@ -653,7 +653,7 @@ static int32_t reserveTableReqInCacheImpl(const char* pTbFName, int32_t len, SHa
 
 static int32_t reserveTableReqInCache(int32_t acctId, const char* pDb, const char* pTable, SHashObj** pTables) {
   char    fullName[TSDB_TABLE_FNAME_LEN];
-  int32_t len = snprintf(fullName, sizeof(fullName), "%d.`%s`.`%s`", acctId, pDb, pTable);
+  int32_t len = snprintf(fullName, sizeof(fullName), "%d.%s.%s", acctId, pDb, pTable);
   return reserveTableReqInCacheImpl(fullName, len, pTables);
 }