To sort on 13mil docs will take like at least 400 mb for the field cache. Thats if you only sort on one field...it can grow fast if you allow multi field sorting.

How much RAM are you giving your app?

sandyg wrote:
this is my search content

QueryParser parser = new QueryParser("keyword",new StandardAnalyzer());
Query query = parser.parse("1");

Sort sort = new Sort(new SortField(sortField));
          Hits       hits = searcher.search(query,sort);

And i had huge data about 13 millions of records
i am not sure y its giving outof memory exception and
no exception when no sorting is done
plz some one help me yar

and also if to increase heap space how to increase it programatically i had
command prompt
java -Xms<initial heap size>  -Xmx<maximum heap size>
please.....

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