Hi Chandra,

the following query runs fine on my machine, even with 64mb assigned to Java:

<DOCUMENT>{ for $data in collection("MyFile")//R let $grpByValue := data($data/C4) group by $grpByValue return <R> <column1> { distinct-values($data/C7) }</column1> <column2> { sum($data/C7) }</column2> <column3> { $grpByValue }</column3> <GrandTotalGroupBy>1</GrandTotalGroupBy> </R> }</DOCUMENT>

Did you already try to assign more memory to your JVM via the -Xmx flag? Christian ___________________________

On Thu, Nov 28, 2013 at 11:07 AM, ChandraSekhar chandrasekhar.r@intense.in wrote:

Dear Team ,

              I am following the below steps to execute my XQuery
                1) I am Created collection with the MyFile.xml
                2) I am running the query which is in attached file(query.txt) on the above collection
                3) I am Grouping the C4 element for Grouping
                4)I am running this query in java

                    Java code : new XQuery(query).execute(context,fileoutstream);

                    Query running properly when I am not using the group by clause

                    Problem : If I use the group by ,exception is coming like out of main memory,can you please tell me Is their any alternate to reduce  the memory when using group by

Thanks & Regards Chandra Sekhar

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