Increasing the JVM maximum heap size for memory intensive applications
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by Alceu Costa
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Published on 2010-06-12T22:05:11Z
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2010/06/12
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I need to run a Java memory intensive application that uses more than 2GB, but I am having problems to increase the heap maximum size. So far, I have tried the following approaches:
Setting the -Xmx parameter, e.g. -Xmx3000m. This approaches fails at the creation of the JVM. From what I've googled, it looks like that -Xmx must be less than 2GB.
Using the -XX:+AggressiveHeap option. When I try this approach I get an 'Not enough memory' error that tells that the heap size is 1273.4 MB, even though my computer has 8GB of memory.
Is there another approach that I can try to increase the maximum heap size of the JVM? Here's a summary of the computer specs:
- OS: Windows 7 (64 bit)
- Processor: Intel Core i7 (2.66 GHz)
- Memory: 8 GB
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