diff --git a/blade-service/blade-wms/src/main/java/org/springblade/wms/mapper/StStockInoutRecordMapper.xml b/blade-service/blade-wms/src/main/java/org/springblade/wms/mapper/StStockInoutRecordMapper.xml
index 6bc449e14..7a9d29a52 100644
--- a/blade-service/blade-wms/src/main/java/org/springblade/wms/mapper/StStockInoutRecordMapper.xml
+++ b/blade-service/blade-wms/src/main/java/org/springblade/wms/mapper/StStockInoutRecordMapper.xml
@@ -153,13 +153,11 @@
 
     <select id="getMaxPiNo" resultType="java.lang.String">
         SELECT PI_NO
-        FROM (
-                 SELECT PI_NO
-                 FROM ST_STOCK_INOUT_RECORD
-                 WHERE PI_NO LIKE #{format} || '%'
-                 ORDER BY PI_NO DESC
-             )
-        WHERE ROWNUM = 1
+        FROM ST_STOCK_INOUT_RECORD
+        WHERE PI_NO LIKE #{format} || '%'
+          AND ROWNUM = 1
+        ORDER BY PI_NO DESC
+            FOR UPDATE
     </select>
 
     <select id="getTeamSetByUserId" resultType="java.lang.String">
diff --git a/blade-service/blade-wms/src/main/java/org/springblade/wms/service/impl/StStockInoutRecordServiceImpl.java b/blade-service/blade-wms/src/main/java/org/springblade/wms/service/impl/StStockInoutRecordServiceImpl.java
index 6ed435baa..a48f7e734 100644
--- a/blade-service/blade-wms/src/main/java/org/springblade/wms/service/impl/StStockInoutRecordServiceImpl.java
+++ b/blade-service/blade-wms/src/main/java/org/springblade/wms/service/impl/StStockInoutRecordServiceImpl.java
@@ -129,6 +129,7 @@ public class StStockInoutRecordServiceImpl extends BaseServiceImpl<StStockInoutR
 	}
 
 	@Override
+	@Transactional(rollbackFor = Exception.class)
 	public String getMaxPiNo(String typeCode) {
 		String datePrefix = DateUtil.format(new Date(), "yyyyMMdd");
 		return baseMapper.getMaxPiNo(typeCode + datePrefix);