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From Apache Wiki <>
Subject [Solr Wiki] Trivial Update of "DataImportHandlerFaq" by DanielLoNigro
Date Tue, 02 Oct 2012 01:11:35 GMT
Dear Wiki user,

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The "DataImportHandlerFaq" page has been changed by DanielLoNigro:

Add comment about MSSQL default setting changing in 1.2

  === I'm using DataImportHandler with MS SQL Server database with sqljdbc driver. DataImportHandler
is going out of memory. I tried adjustng the batchSize values but they don't seem to make
any difference. How do I fix this? ===
  There's a connection property called responseBuffering in the sqljdbc driver whose default
value is "full" which causes the entire result set to be fetched. See
for more details. You can set this property to "adaptive" to keep the driver from getting
everything into memory. Connection properties like this can be set as an attribute (responseBuffering="adaptive")
in the dataSource configuration OR directly in the jdbc url specified in DataImportHandler's
dataSource configuration.
+ Note that this is not an issue since version 1.2 of the SQL Server JDBC driver. Since version
1.2, "adaptive" is the default setting for responseBuffering.
  === Is it possible to use core properties inside data-config xml? ===
  If you define the property inside of your <core/> in solr.xml then you can refer to
the property in your data-config.xml file directly.  However if you define it in the <solr/>
level, so that it applies to multiple cores, then you need to use the technique below:

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