diff --git a/pom.xml b/pom.xml
index 9d17db9..fc4dc8f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.yanghuanglin</groupId>
     <artifactId>seq</artifactId>
-    <version>1.11.0</version>
+    <version>1.12.0</version>
     <name>seq</name>
     <description>seq</description>
     <properties>
@@ -34,6 +34,12 @@
             <version>42.7.3</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.dameng</groupId>
+            <artifactId>DmJdbcDriver18</artifactId>
+            <version>8.1.3.140</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
diff --git a/src/main/java/com/yanghuanglin/seq/config/GeneratorConfig.java b/src/main/java/com/yanghuanglin/seq/config/GeneratorConfig.java
index b20e175..1a2997c 100644
--- a/src/main/java/com/yanghuanglin/seq/config/GeneratorConfig.java
+++ b/src/main/java/com/yanghuanglin/seq/config/GeneratorConfig.java
@@ -3,6 +3,8 @@ package com.yanghuanglin.seq.config;
 import com.yanghuanglin.seq.enums.DbType;
 
 import javax.sql.DataSource;
+import java.sql.Connection;
+import java.sql.DatabaseMetaData;
 import java.sql.SQLException;
 
 /**
@@ -132,8 +134,10 @@ public class GeneratorConfig {
 
     public DbType getDbType() {
         if (this.dbType == null) {
+            Connection connection = null;
             try {
-                String productName = this.dataSource.getConnection().getMetaData().getDatabaseProductName();
+                connection = dataSource.getConnection();
+                String productName = connection.getMetaData().getDatabaseProductName();
                 this.dbType = DbType.of(productName);
             } catch (SQLException e) {
                 throw new RuntimeException("获取数据库类型失败", e);
diff --git a/src/main/java/com/yanghuanglin/seq/dao/impl/SequencesBase.java b/src/main/java/com/yanghuanglin/seq/dao/impl/SequencesBase.java
index 22f208c..89dafce 100644
--- a/src/main/java/com/yanghuanglin/seq/dao/impl/SequencesBase.java
+++ b/src/main/java/com/yanghuanglin/seq/dao/impl/SequencesBase.java
@@ -50,6 +50,7 @@ public abstract class SequencesBase {
                     sql = sql.replaceAll("`create_time`", String.format("`%s`", tableConfig.getCreateTimeColumn()));
                     break;
                 case Dameng:
+                case DM_DBMS:
                 case PostgreSQL:
                 case KingbaseES:
                     sql = sql.replaceAll("\"sequences(_unused|_unlock)\"", String.format("%s$1", tableConfig.getTable()));
@@ -79,6 +80,7 @@ public abstract class SequencesBase {
                 break;
             case PostgreSQL:
             case Dameng:
+            case DM_DBMS:
             case KingbaseES:
                 sqlString = sqlString.replaceAll("`(.+?)`", "\"$1\"");
                 break;
diff --git a/src/main/java/com/yanghuanglin/seq/enums/DbType.java b/src/main/java/com/yanghuanglin/seq/enums/DbType.java
index b512cfe..6e9882f 100644
--- a/src/main/java/com/yanghuanglin/seq/enums/DbType.java
+++ b/src/main/java/com/yanghuanglin/seq/enums/DbType.java
@@ -5,6 +5,8 @@ public enum DbType {
     MySQL("mysql"),
     //达梦数据库
     Dameng("dm"),
+    //达梦数据库
+    DM_DBMS("dm"),
     //人大金仓数据库
     KingbaseES("pgsql"),
     //PostgreSQL数据库
@@ -28,7 +30,7 @@ public enum DbType {
      */
     public static DbType of(String productName) {
         for (DbType value : DbType.values()) {
-            if (value.name().equalsIgnoreCase(productName)) {
+            if (value.name().equalsIgnoreCase(productName.replace(" ","_"))) {
                 return value;
             }
         }
diff --git a/src/main/resources/dm/create_table_sequences.sql b/src/main/resources/dm/create_table_sequences.sql
index 7f92767..8b67106 100644
--- a/src/main/resources/dm/create_table_sequences.sql
+++ b/src/main/resources/dm/create_table_sequences.sql
@@ -3,24 +3,11 @@ CREATE TABLE IF NOT EXISTS "sequences"
     "key"         VARCHAR(64) NOT NULL,
     "type"        VARCHAR(64) NOT NULL,
     "seq"         BIGINT      NOT NULL,
-    "update_time" TIMESTAMP,
+    "update_time" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     PRIMARY KEY ("key", "type")
 );
 COMMENT ON TABLE "sequences" IS '当前序号表';
 COMMENT ON COLUMN "sequences"."key" IS '序号英文名称';
 COMMENT ON COLUMN "sequences"."type" IS '序号类型';
 COMMENT ON COLUMN "sequences"."seq" IS '已使用到的序号';
-COMMENT ON COLUMN "sequences"."update_time" IS '最后使用时间';
-
-/*
-@触发器设置，功能：自动记录更新时间
-@触发器名为 SEQUENCES_UPDATE_TIME
-@触发器执行范围为每行生效
-*/
-CREATE OR REPLACE TRIGGER SEQUENCES_UPDATE_TIME BEFORE UPDATE ON "sequences" FOR EACH ROW
-BEGIN
-    NEW."update_time":=SYSDATE;
-END;
-
-/*启动触发器*/
-ALTER TRIGGER SEQUENCES_UPDATE_TIME ENABLE;
\ No newline at end of file
+COMMENT ON COLUMN "sequences"."update_time" IS '最后使用时间';
\ No newline at end of file
diff --git a/src/test/java/SeqTest.java b/src/test/java/SeqTest.java
index 29b4d1b..cebc089 100644
--- a/src/test/java/SeqTest.java
+++ b/src/test/java/SeqTest.java
@@ -5,10 +5,12 @@ import com.yanghuanglin.seq.config.TableConfig;
 import com.yanghuanglin.seq.generator.Generator;
 import com.yanghuanglin.seq.generator.impl.SequencesGenerator;
 import com.yanghuanglin.seq.po.Sequences;
+import dm.jdbc.driver.DmdbDataSource;
 import org.junit.Test;
 import org.postgresql.ds.PGSimpleDataSource;
 
 import javax.sql.DataSource;
+import java.sql.DatabaseMetaData;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.ArrayBlockingQueue;
@@ -24,7 +26,7 @@ public class SeqTest {
     private static final Generator generator;
 
     static {
-        dataSource = mysql();
+        dataSource = dm();
 
         GeneratorConfig generatorConfig = new GeneratorConfig(dataSource);
         System.out.println("DbType: " + generatorConfig.getDbType());
@@ -65,6 +67,14 @@ public class SeqTest {
         return pgDataSource;
     }
 
+    private static DataSource dm() {
+        DmdbDataSource dmdbDataSource = new DmdbDataSource();
+        dmdbDataSource.setURL("jdbc:dm://127.0.0.1:5236?schema=sequence");
+        dmdbDataSource.setUser("SYSDBA");
+        dmdbDataSource.setPassword("SYSDBA");
+        return dmdbDataSource;
+    }
+
     @Test
     public void createTable() {
         generator.createTable();
@@ -137,6 +147,7 @@ public class SeqTest {
 
     @Test
     public void lockTest() {
+        generator.generate("0010001$distrainCode2024","MISSION");
         Sequences sequences = new Sequences();
         sequences.setKey("0010001$distrainCode2024");
         sequences.setType("MISSION");