Java. Lang. outofmemoryerror: Java heap space (heap memory overflow)

This exception is thrown if 98% is used for GC and the available heap size is less than 2% in JVM.
JVM heap setting refers to the setting of memory space that JVM can allocate during Java program running. the JVM automatically sets the heap size value at startup. The initial space (-XMS) is 1/64 of the physical memory, and the maximum space (-xmx) is 1/4 of the physical memory. You can use options such as-xmn-XMS-xmx provided by JVM to set the configuration.

I use myeclipse 8.6. The solution is as follows:

Myeclipse ---, window ---, preferences --- myeclipse ---, servers ---, Tomcat ---, select the tomcat version you are using ---, JDK ---, set the following in optional Java VM arguments on the right content:

-Xms256m-xmx256m

That's all! Thank you for reading this article!