Hibernate - java.lang.OutOfMemoryError: Java heap space

Question

I get this exception:

Exception in thread \"AWT-EventQueue-0\" java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Arrays.java:2882)
    a         


        

Answer 1

While such an error might be an indicator for a memory leak, it could also just result from high memory usage in your program.

You could try to amend it by adding the following parameter to your command line (which will increase the maximum heap size; adapt the 512m according to your needs):

java -Xmx512m yourprog

If it goes away that way, your program probably just needed more than the default size (which depends on the platform); if it comes again (probably a little later in time), you have a memory leak somewhere.