diff --git a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBillsMaintInstanceMapper.java b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBillsMaintInstanceMapper.java
index ccf6c45..9275774 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBillsMaintInstanceMapper.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBillsMaintInstanceMapper.java
@@ -75,6 +75,14 @@ public interface DmsBillsMaintInstanceMapper {
      */
     public int batchDmsBillsMaintDetail(List<DmsBillsMaintDetail> dmsBillsMaintDetailList);
 
+    /**
+     * 新增保养工单明细（单条）
+     *
+     * @param dmsBillsMaintDetail 保养工单明细
+     * @return 结果
+     */
+    int insertDmsBillsMaintDetail(DmsBillsMaintDetail dmsBillsMaintDetail);
+
     /**
      * 查询最新一条保养工单，Join 第一步节点
      *
@@ -100,3 +108,4 @@ public interface DmsBillsMaintInstanceMapper {
      */
     Date selectDbNow();
 }
+
diff --git a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBillsMaintInstanceServiceImpl.java b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBillsMaintInstanceServiceImpl.java
index 5981ad1..8a1c875 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBillsMaintInstanceServiceImpl.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBillsMaintInstanceServiceImpl.java
@@ -132,7 +132,7 @@ public class DmsBillsMaintInstanceServiceImpl implements IDmsBillsMaintInstanceS
         });
 
         if (!billsMaintDetails.isEmpty()) {
-            dmsBillsMaintInstanceMapper.batchDmsBillsMaintDetail(billsMaintDetails);
+            insertMaintDetailsOneByOne(billsMaintDetails);
         }
         ArrayList<DmsBillsMaintDetailProject> list1 = new ArrayList<>();
         List<DmsBillsMaintDetail> list = dmsBillsMaintDetailMapper.selectDetailList(maintInstanceId);
@@ -514,7 +514,7 @@ public class DmsBillsMaintInstanceServiceImpl implements IDmsBillsMaintInstanceS
             billsMaintDetails.add(detail);
         }
         if (!billsMaintDetails.isEmpty()) {
-            dmsBillsMaintInstanceMapper.batchDmsBillsMaintDetail(billsMaintDetails);
+            insertMaintDetailsOneByOne(billsMaintDetails);
         }
 
         // 创建保养工单明细项目（所有项目均为已完成状态）
@@ -544,6 +544,14 @@ public class DmsBillsMaintInstanceServiceImpl implements IDmsBillsMaintInstanceS
         return i;
     }
 
+    /**
+     * Oracle 11/19 兼容：逐条插入明细，确保每条记录独立获取序列值。
+     */
+    private void insertMaintDetailsOneByOne(List<DmsBillsMaintDetail> billsMaintDetails) {
+        for (DmsBillsMaintDetail detail : billsMaintDetails) {
+            dmsBillsMaintInstanceMapper.insertDmsBillsMaintDetail(detail);
+        }
+    }
     private boolean isOracleUniqueViolation(Throwable e) {
         Throwable cursor = e;
         while (cursor != null) {
@@ -557,3 +565,4 @@ public class DmsBillsMaintInstanceServiceImpl implements IDmsBillsMaintInstanceS
     }
 
 }
+
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
index 9ed7857..d08ee7f 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
@@ -169,22 +169,58 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             bills_maint_detail_id, maint_instance_id, machine_id, maint_station_id, maint_standard_id,
             operation_description, maint_status, remark, create_by, create_time, update_by, update_time
         )
-        <foreach item="item" index="index" collection="list" separator="union all">
-            select
-                HAIWEI.SEQ_DMS_MAINT_DETAIL.NEXTVAL,
-                #{item.maintInstanceId,jdbcType=NUMERIC},
-                #{item.deviceId,jdbcType=NUMERIC},
-                #{item.stationId,jdbcType=NUMERIC},
-                #{item.maintStandardId,jdbcType=NUMERIC},
-                #{item.operationDescription,jdbcType=VARCHAR},
-                #{item.maintStatus,jdbcType=NUMERIC},
-                #{item.remark,jdbcType=VARCHAR},
-                #{item.createBy,jdbcType=NUMERIC},
-                #{item.createTime,jdbcType=TIMESTAMP},
-                #{item.updateBy,jdbcType=NUMERIC},
-                #{item.updateTime,jdbcType=TIMESTAMP}
-            from dual
-        </foreach>
+        select
+            HAIWEI.SEQ_DMS_MAINT_DETAIL.NEXTVAL,
+            t.maint_instance_id,
+            t.machine_id,
+            t.maint_station_id,
+            t.maint_standard_id,
+            t.operation_description,
+            t.maint_status,
+            t.remark,
+            t.create_by,
+            t.create_time,
+            t.update_by,
+            t.update_time
+        from (
+            <foreach item="item" index="index" collection="list" separator="union all">
+                select
+                    #{item.maintInstanceId,jdbcType=NUMERIC} as maint_instance_id,
+                    #{item.deviceId,jdbcType=NUMERIC} as machine_id,
+                    #{item.stationId,jdbcType=NUMERIC} as maint_station_id,
+                    #{item.maintStandardId,jdbcType=NUMERIC} as maint_standard_id,
+                    #{item.operationDescription,jdbcType=VARCHAR} as operation_description,
+                    #{item.maintStatus,jdbcType=NUMERIC} as maint_status,
+                    #{item.remark,jdbcType=VARCHAR} as remark,
+                    #{item.createBy,jdbcType=NUMERIC} as create_by,
+                    #{item.createTime,jdbcType=TIMESTAMP} as create_time,
+                    #{item.updateBy,jdbcType=NUMERIC} as update_by,
+                    #{item.updateTime,jdbcType=TIMESTAMP} as update_time
+                from dual
+            </foreach>
+        ) t
+    </insert>
+    <insert id="insertDmsBillsMaintDetail" parameterType="DmsBillsMaintDetail">
+        <selectKey keyProperty="billsMaintDetailId" resultType="long" order="BEFORE">
+            SELECT HAIWEI.SEQ_DMS_MAINT_DETAIL.NEXTVAL FROM DUAL
+        </selectKey>
+        insert into dms_bills_maint_detail(
+            bills_maint_detail_id, maint_instance_id, machine_id, maint_station_id, maint_standard_id,
+            operation_description, maint_status, remark, create_by, create_time, update_by, update_time
+        ) values (
+            #{billsMaintDetailId,jdbcType=NUMERIC},
+            #{maintInstanceId,jdbcType=NUMERIC},
+            #{deviceId,jdbcType=NUMERIC},
+            #{stationId,jdbcType=NUMERIC},
+            #{maintStandardId,jdbcType=NUMERIC},
+            #{operationDescription,jdbcType=VARCHAR},
+            #{maintStatus,jdbcType=NUMERIC},
+            #{remark,jdbcType=VARCHAR},
+            #{createBy,jdbcType=NUMERIC},
+            #{createTime,jdbcType=TIMESTAMP},
+            #{updateBy,jdbcType=NUMERIC},
+            #{updateTime,jdbcType=TIMESTAMP}
+        )
     </insert>
     <insert id="batchDmsProject">
         insert all
@@ -264,3 +300,4 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         SELECT SYSDATE FROM DUAL
     </select>
 </mapper>
+