Hi Zach, Once you get an OutOfMemoryError, pretty much anything can happen… The first thing to try is increasing the -Xmx256M setting in the d2r-server script to assign more heap to the JVM.
What size of BSBM dataset are you trying? Best, Richard On 31 Aug 2011, at 19:31, Zach Schweinfurth wrote: > On other thing to note, this error seems to always occur after I get a java > heap space error. That is, I will run a query, get a java heap space error. > Then any other query I run, I will get the unknown character error. > > On Wed, Aug 31, 2011 at 11:42 AM, Zach Schweinfurth > <[email protected]> wrote: > Hello. > > I have been working with D2R 0.7 server and the BSBM benchmark relational > data set. And I have come across this error while executing sparql queries in > D2R server against the mappings I have made: Unknown character set index for > field '25959' received from server.: > > The set up of my mysql database is as follows: > > I generated sql files from the BSBM generator, loaded them into a mysql > database on mysql server 5.1, running on a virtual Ubuntu 10.04 32 Bit within > my server. All I did to load the database was execute the sql files that the > BSBM generated created. The sql files from the BSBM generator all seem to set > columns and the database itself to a utf8 character set. The mysql server has > its default character set as latin1, but as far as I understand that > character set is not used if the database itself has set a default character > set. > > The set up of my D2R server is as follows: > > Running D2R Server version 0.7 on a virtual Ubuntu 10.04 32 Bit within the > same server box the mysql database is running in. I created a mapping file > based on the specification. I connect from D2R server to the mysql database, > both located within my internal network, fine without any mapping validation > errors. Then once I start running queries against the mappings I get the > Unknown character set index for field '25959' received from server error. > Sometimes I am able to get simple limited queries to return results from the > database, but the majority of the queries I run give me the Character Set > error. > > > Do you all happen to know of any possible errors I am making or of any sort > of settings that may be causing this error? > > Thanks. > -- > Zachary Schweinfurth > Ontology Engineer > Revelytix, Inc. > > > > > -- > Zachary Schweinfurth > Ontology Engineer > Revelytix, Inc. > > ------------------------------------------------------------------------------ > Special Offer -- Download ArcSight Logger for FREE! > Finally, a world-class log management solution at an even better > price-free! And you'll get a free "Love Thy Logs" t-shirt when you > download Logger. Secure your free ArcSight Logger TODAY! > http://p.sf.net/sfu/arcsisghtdev2dev_______________________________________________ > d2rq-map-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/d2rq-map-devel ------------------------------------------------------------------------------ Special Offer -- Download ArcSight Logger for FREE! Finally, a world-class log management solution at an even better price-free! And you'll get a free "Love Thy Logs" t-shirt when you download Logger. Secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsisghtdev2dev _______________________________________________ d2rq-map-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/d2rq-map-devel
