How do I override the JVM Heap Size?

If you’ve ever received a java.lang.OutOfMemoryError when processing a large amount of data, there’s a chance you need to manually specify the JVM size if you can. Here’s an example…

java -Xms64m -Xmx256m MyProgram

… Of course, another option you may want to consider is to structure your program more efficiently (i.e. don’t store all that data in memory, process in blocks, use a tool more suitable to the task like BCP or DB2 LOAD).

Want to read more on the subject? Read this

Like this? Consider joining my mailing list, or at least using my affiliate link when buying from Amazon 🙂

You or someone you know looking to buy or sell?

Leave a Reply