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How to generate Large Single page report on Server and export to excel


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I have to generate a report on server using JSON datasource which should come in 1 page as it needs to be exported to XL/XLSx format. The data size is variable and can be upto 150K rows of record. I have increased the JVM memory to 2GB and cant increase beyond that. The report keeps on running indefinately.

Please suggest any other performance tuning tips.

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