# Why my graph with XLSReader/Writer fails with OutOfMemory?

**URL:** <https://forum.cloverdx.com/t/why-my-graph-with-xlsreader-writer-fails-with-outofmemory/640>\
**Category:** CloverDX Platform\
**Created:** [December 3, 2009, 12:00am UTC](https://forum.cloverdx.com/t/why-my-graph-with-xlsreader-writer-fails-with-outofmemory/640 "2009-12-03T00:00:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![avackova](https://avatars.discourse-cdn.com/v4/letter/a/65b543/32.png) [@avackova](https://forum.cloverdx.com/u/avackova)\
**Post date:** [December 3, 2009, 12:00am UTC](https://forum.cloverdx.com/t/why-my-graph-with-xlsreader-writer-fails-with-outofmemory/640/1 "2009-12-03T00:00:00Z")

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XLSReader and XLSWriter components store all data in the memory, so they are very memory intensive.  
If you need to handle big xls files, set more memory for jvm (-Xmx parameter).  
From the above reason XLSWriter component is not sufficient for writing lots of data.