go runtime_error ai_generated true

sql: 连接已被使用

sql: connection is already in use

ID: go/database-sql-conn-already-in-use

其他格式: JSON · Markdown 中文 · English
80%修复率
80%置信度
0证据数
2024-02-14首次发现

版本兼容性

版本状态引入弃用备注
1.16 active — — —
1.19 active — — —

根因分析

数据库连接在仍被其他 goroutine 使用时被返回到池中，导致竞争条件。

English

A database connection was returned to the pool while still being used by another goroutine, causing a race condition.

generic

解决方案

  1. 90% 成功率 
    Ensure each query uses its own connection properly: use db.QueryContext with a context and avoid sharing rows between goroutines.
  2. 75% 成功率 
    Use a mutex to serialize access to rows: var mu sync.Mutex; mu.Lock(); defer mu.Unlock(); rows.Scan(...)

无效尝试

常见但无效的做法:

  1. 80% 失败

    May cause data corruption or panics due to concurrent access.

  2. 50% 失败

    Doesn't fix the root cause; may delay the issue but not prevent it.