# Managing Memory

> **📝 Note**: SingleStore Helios does not support setting the engine variables that are discussed in this topic.

SingleStore has two engine variables that control its memory usage. Both are measured in megabytes.

## In this section

* [maximum\_memory](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/maximum-memory.md)
* [maximum\_table\_memory](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/maximum-table-memory.md)
* [buffer\_manager\_cached\_memory](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/buffer-manager-cached-memory.md)
* [Disk Spilling](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/disk-spilling.md)
* [Distributed Plancache](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/distributed-plancache.md)
* [Addressing the Maximum Table Memory Error](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/addressing-the-maximum-table-memory-error.md)
* [Out of Memory on Linux](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/out-of-memory-on-linux.md)
* [Freeing Table Memory](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/freeing-table-memory.md)
* [Managing Plancache Memory and Disk Usage](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/managing-plancache-memory-and-disk-usage.md)
* [Change Memory Limits](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/change-memory-limits.md)

***

Modified at: June 24, 2025

Source: [/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/managing-memory/)

(An index of the documentation is available at /llms.txt)