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- 遇到过这样的问题：对集合执行一个大排序操作（如聚合），出现以下错误：（测试版本：MongoDB 3.0.6），怎么快速解决此问题呢？下面给大家分享MongoDB 排序超过内存限制的解决方法，一起看看吧
对集合执行一个大排序操作（如聚合），出现以下错误：（测试版本：MongoDB 3.0.6）
在MongoDB中，内排序大内存限制最大为100M，如果执行一个更大的排序，需要使用 allowDiskUse 选项来将数据写到临时文件来排序。
在查询语句中添加 allowDiskUse 选项：
在MongoDB中，内排序大内存限制最大为100M，如果执行一个更大的排序，需要使用 allowDiskUse 选项来将数据写到临时文件来排序。
在查询语句中添加 allowDiskUse 选项：
{allowDiskUse: true}
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