How to Fix "IntelliJ IDEA Running Out of Memory"
If IntelliJ IDEA is running out of memory, it can lead to poor performance, slow responsiveness, and crashes.
This issue often arises when working on large projects or when multiple tabs and applications are running simultaneously.
Here’s how to solve this problem: First, check how much memory IntelliJ IDEA is using.
You can monitor memory usage by navigating to Help > Diagnostic Tools > Show Memory Indicator.
If memory usage is high, it might be necessary to increase the amount of memory allocated to IntelliJ.
To do this, you need to modify the idea.vmoptions file.
Go to Help > Edit Custom VM Options, and in the file, look for the -Xmx and -Xms parameters.
The -Xmx parameter defines the maximum amount of memory IntelliJ can use.
By default, this is often set to 1024MB, but you can increase it to 2048MB or higher depending on your system’s available memory.
Be cautious not to allocate more memory than your system can handle, as doing so can slow down your entire computer.
After increasing the memory allocation, save the file and restart IntelliJ IDEA for the changes to take effect.
If IntelliJ is still running out of memory, consider closing unnecessary applications and browser tabs to free up system resources.
IntelliJ IDEA is a resource-intensive IDE, and running other heavy applications at the same time can cause memory issues.
If you have multiple large projects open in IntelliJ, consider closing those you aren't actively working on.
Another tip is to enable Power Save Mode, which reduces the amount of background work IntelliJ performs.
Go to File > Power Save Mode to enable this feature.
Power Save Mode can significantly reduce memory usage and improve performance, especially on slower systems.
Finally, it’s important to clear out unnecessary project files and caches.
Go to File > Invalidate Caches / Restart and select Invalidate and Restart.
This will clear out the cache and rebuild it, which can free up memory and improve IntelliJ’s performance.
By following these steps, you should be able to prevent IntelliJ IDEA from running out of memory.
