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Java Forum / General / November 2005Out of Memory in Java transformation for large XMLdata
I am using Java transformer (Xalan) to transform large XML data with some XSL. And whenever the data is too large (>50 MB), I get Out of memory error. I am wondering, is there a way out? Any help would be appreciated. > I am using Java transformer (Xalan) to transform large XML > data with some XSL. > And whenever the data is too large (>50 MB), I get Out of memory error. > > I am wondering, is there a way out? give JVM more memory by editing start parameters?  SignatureRoman. > I am using Java transformer (Xalan) to transform large XML > data with some XSL. [quoted text clipped - 3 lines] > > Any help would be appreciated. Give JVM more memory by editing start parameters or use another XML parser. -- Roman. I don't remember wht the bug-id was, but there was one fixed in Java 1.4.2_09. It had something to do with buffers. perhaps you try to update > I don't remember wht the bug-id was, but there was one fixed in Java > 1.4.2_09. It had something to do with buffers. > perhaps you try to update You are probably thinking of StringBuffers not freeing their memory when length is set to zero (not a bug, obviously). I think in this case it's just that the size of the XML file is huge. Or more precisely, the in memory representation of the XML file is huge. Xalan, currently, always keeps the entire source in memory throughout the processing. Other than increasing memory, it may be possible to write a simple SAX transformation that cuts down on unnecessary information within the file. Tom Hawtin SignatureUnemployed English Java programmer http://jroller.com/page/tackline/ Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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