diff --git a/core/src/main/java/io/seata/core/store/db/sql/log/DmLogStoreSqls.java b/core/src/main/java/io/seata/core/store/db/sql/log/DmLogStoreSqls.java
index ca8860d73a6..f824851844b 100644
--- a/core/src/main/java/io/seata/core/store/db/sql/log/DmLogStoreSqls.java
+++ b/core/src/main/java/io/seata/core/store/db/sql/log/DmLogStoreSqls.java
@@ -21,7 +21,7 @@
  * Database log store DaMeng sql
  *
  * @author wang.liang
- * @since 1.7.1
+ * @since 1.8.0
  */
 @LoadLevel(name = "dm")
 public class DmLogStoreSqls extends MysqlLogStoreSqls {
diff --git a/rm-datasource/src/main/java/io/seata/rm/datasource/sql/struct/cache/DmTableMetaCache.java b/rm-datasource/src/main/java/io/seata/rm/datasource/sql/struct/cache/DmTableMetaCache.java
index 030409c384e..fea77ea44f9 100644
--- a/rm-datasource/src/main/java/io/seata/rm/datasource/sql/struct/cache/DmTableMetaCache.java
+++ b/rm-datasource/src/main/java/io/seata/rm/datasource/sql/struct/cache/DmTableMetaCache.java
@@ -24,7 +24,6 @@
 import io.seata.sqlparser.struct.TableMeta;
 import io.seata.sqlparser.util.JdbcConstants;
 
-import java.sql.Connection;
 import java.sql.DatabaseMetaData;
 import java.sql.ResultSet;
 import java.sql.SQLException;