solr - java heap space out of memory

Question

Can any one help me to find out the error cause in tomcat. i m using solr in it. starting it works fine. later i will raise this error. after restarting it works fine. plea

Answer 1

You can try lowering the default batchSize JDBC connection param in your dataSource definition.
DataImportHandler is designed to stream row one-by-one. It passes a fetch size value (default: 500) to Statement#setFetchSize which some drivers do not honor.

If you're using MsSQL you can add dataSource param responseBuffering="adaptive".

See here for more info:
http://wiki.apache.org/solr/DataImportHandlerFaq