Problem in converting Large QDomDocument to QByteArray

[sattu]

Hi everyone,


I am using "QDomDocument" class to create XML out of my database having more than 5 lakh records. Following is the code I am using to achieve this:-

QDomDocument XMLdoc;
//Put all the records inside XMLdoc
QByteArray XmlByte = XMLdoc.toByteArray();   //Here is where I am facing the problem

QDomDocument XMLdoc;
//Put all the records inside XMLdoc
QByteArray XmlByte = XMLdoc.toByteArray();   //Here is where I am facing the problem

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So the issue is if my database has less than 5 lakh records (say 3 lakh), then "XMLdoc.toByteArray()" is completely fine.
But if my database has >= 5 lakh records, then "XMLdoc.toByteArray()" hangs. I am not able to figure out how to solve this. Is this due to some memory issue or something?