diff --git a/app/core/database.py b/app/core/database.py
index 9a9fb2b..93c127c 100644
--- a/app/core/database.py
+++ b/app/core/database.py
@@ -3,7 +3,7 @@ from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import sessionmaker
 from .config import settings
 
-engine = create_engine(settings.DATABASE_URL, echo=False, pool_size=15, max_overflow=30, pool_timeout=60, pool_recycle=300)
+engine = create_engine(settings.DATABASE_URL, pool_pre_ping=True, echo=False, pool_size=30, max_overflow=60, pool_timeout=30, pool_recycle=3600)
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 
 Base = declarative_base()
diff --git a/app/services/original_data.py b/app/services/original_data.py
index 8e25f83..8b2ef88 100644
--- a/app/services/original_data.py
+++ b/app/services/original_data.py
@@ -37,31 +37,50 @@ class OriginalDataService(BaseService[OriginalData]):
             logger.info(f"Table {table_name} already exists")
             return True
 
-        # 表不存在,创建表
-        try:
-            create_table_sql = f"""
-                CREATE TABLE `{table_name}` (
-                    `id` INT AUTO_INCREMENT PRIMARY KEY,
-                    `account_id` INT NOT NULL COMMENT '账号ID',
-                    `bfpcode` VARCHAR(1000) NOT NULL COMMENT '前（后）视点名称',
-                    `mtime` DATETIME NOT NULL COMMENT '测点观测时间',
-                    `bffb` VARCHAR(1000) NOT NULL COMMENT '前（后）视标记符',
-                    `bfpl` VARCHAR(1000) NOT NULL COMMENT '前（后）视距离(m)',
-                    `bfpvalue` VARCHAR(1000) NOT NULL COMMENT '前（后）视尺读数(m)',
-                    `NYID` VARCHAR(100) NOT NULL COMMENT '期数id',
-                    `sort` INT COMMENT '序号',
-                    INDEX `idx_nyid` (`NYID`),
-                    INDEX `idx_account_id` (`account_id`)
-                ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='原始数据表_账号{account_id}'
-            """
-            db.execute(text(create_table_sql))
-            db.commit()
-            logger.info(f"Table {table_name} created successfully")
-            return True
-        except Exception as e:
-            db.rollback()
-            logger.error(f"Failed to create table {table_name}: {str(e)}")
-            raise Exception(f"创建原始数据表失败: {str(e)}")
+        # 表不存在,创建表 - 添加重试机制
+        max_retries = 3
+        for attempt in range(max_retries):
+            try:
+                create_table_sql = f"""
+                    CREATE TABLE `{table_name}` (
+                        `id` INT AUTO_INCREMENT PRIMARY KEY,
+                        `account_id` INT NOT NULL COMMENT '账号ID',
+                        `bfpcode` VARCHAR(1000) NOT NULL COMMENT '前（后）视点名称',
+                        `mtime` DATETIME NOT NULL COMMENT '测点观测时间',
+                        `bffb` VARCHAR(1000) NOT NULL COMMENT '前（后）视标记符',
+                        `bfpl` VARCHAR(1000) NOT NULL COMMENT '前（后）视距离(m)',
+                        `bfpvalue` VARCHAR(1000) NOT NULL COMMENT '前（后）视尺读数(m)',
+                        `NYID` VARCHAR(100) NOT NULL COMMENT '期数id',
+                        `sort` INT COMMENT '序号',
+                        INDEX `idx_nyid` (`NYID`),
+                        INDEX `idx_account_id` (`account_id`)
+                    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='原始数据表_账号{account_id}'
+                """
+                # 使用引擎直接执行，不依赖db会话的事务
+                with engine.begin() as conn:  # 创建独立连接
+                    conn.execute(text(create_table_sql))
+
+                logger.info(f"Table {table_name} created successfully on attempt {attempt + 1}")
+                return True
+
+            except Exception as e:
+                logger.warning(f"Attempt {attempt + 1} to create table {table_name} failed: {str(e)}")
+
+                # 检查是否是表已存在错误（并发情况下可能发生）
+                if "already exists" in str(e).lower() or "exist" in str(e).lower():
+                    logger.info(f"Table {table_name} was created by another process")
+                    return True
+
+                if attempt == max_retries - 1:
+                    db.rollback()  # 确保回滚当前事务
+                    logger.error(f"Failed to create table {table_name} after {max_retries} attempts: {str(e)}")
+                    raise Exception(f"创建原始数据表失败: {str(e)}")
+
+                # 短暂延迟后重试
+                import time
+                time.sleep(0.1 * (attempt + 1))
+
+        return False
 
     def create_table_for_account(self, db: Session, account_id: int) -> Dict[str, Any]:
         """
@@ -83,12 +102,20 @@ class OriginalDataService(BaseService[OriginalData]):
                     'message': f'账号ID {account_id} 不存在'
                 }
 
-            # 创建表
-            self._ensure_table_exists(db, account_id)
-            return {
-                'success': True,
-                'message': f'原始数据表 {self._get_table_name(account_id)} 创建成功'
-            }
+            # 创建表 - 现在使用增强的错误处理
+            table_created = self._ensure_table_exists(db, account_id)
+
+            if table_created:
+                return {
+                    'success': True,
+                    'message': f'原始数据表 {self._get_table_name(account_id)} 创建成功'
+                }
+            else:
+                return {
+                    'success': False,
+                    'message': f'原始数据表 {self._get_table_name(account_id)} 创建失败'
+                }
+
         except Exception as e:
             logger.error(f"Failed to create table for account {account_id}: {str(e)}")
             return {
@@ -296,13 +323,12 @@ class OriginalDataService(BaseService[OriginalData]):
                 'failed_items': []
             }
 
-        # 确保表存在
-        try:
-            self._ensure_table_exists(db, account_id)
-        except Exception as e:
+        # 确保表存在 - 现在使用增强的错误处理和重试机制
+        table_created = self._ensure_table_exists(db, account_id)
+        if not table_created:
             return {
                 'success': False,
-                'message': f'创建原始数据表失败: {str(e)}',
+                'message': '创建原始数据表失败',
                 'total_count': total_count,
                 'success_count': 0,
                 'failed_count': total_count,