# sqlalchemy.exc.InvalidRequestError：此会话处于'已回滚'状态。不允许任何操作。

- **ID:** `python/sqlalchemy-session-rollback-error`
- **领域:** python
- **类别:** runtime_error
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

在回滚后尝试使用会话而未开始新事务。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| 3.x | active | — | — |

## 解决方案

1. **Begin a new transaction after rollback.** (95% 成功率)
   ```
   session.rollback()
session.begin()  # Start new transaction
   ```
2. **Use session.begin() context manager to auto-handle rollback.** (90% 成功率)
   ```
   with session.begin():
    session.add(obj)
# Automatically commits or rolls back
   ```

## 无效尝试

- **Calling session.commit() after rollback.** — Session is in invalid state; must begin new transaction. (90% 失败率)
- **Ignoring rollback and continuing.** — Session remains in aborted state; all operations fail. (80% 失败率)