Hi Erwin,
In the Virtuoso database directory what is the size of the virtuoso transaction
log file (virtuoso.trx) as the server seems to have spent abt 15mins their
rolling forward the pending transaction before running out of memory ?
What is the "NumberOfBuffers" setting in your virtuoso.ini file and how does
this compare with the amount of memory available on your machine ? Is is
recommended it be set to 2/3 to 3/5 of available RAM, as detailed in the the
Virtuoso performance tuning guide at:
http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtRDFPerformanceTuning
Finally please note that the latest v5 open source release available for
download is 5.0.13 released month thus I would recommend you upgrade to this
latest version or even 6.1.0 (would require dump and reload of RDF data):
http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/
Best Regards
Hugh Williams
Professional Services
OpenLink Software
Web: http://www.openlinksw.com
Support: http://support.openlinksw.com
Forums: http://boards.openlinksw.com/support
Twitter: http://twitter.com/OpenLink
On 23 Feb 2010, at 16:20, Erwin Leonardi wrote:
> Hi,
>
> I start using Virtuoso Open Source for storing RDF data.
> This morning, the server was crashed while I deleted all triples from a
> particular graph. When I tried to restart the server, I got the following
> error message.
>
> 16:50:06 OpenLink Virtuoso Universal Server
> 16:50:06 Version 05.11.3039-pthreads for Linux as of Jul 23 2009
> 16:50:06 uses parts of OpenSSL, PCRE, Html Tidy
> 16:50:06 Database version 3016
> 16:50:06 SQL Optimizer enabled (max 1000 layouts)
> 16:50:07 Compiler unit is timed at 0.000460 msec
> 16:51:01 Roll forward started
> 17:06:44 GPF: Dkernel.c:5185 Server is out of memory and should be killed to
> prevent data corruption.
> GPF: Dkernel.c:5185 Server is out of memory and should be killed to prevent
> data corruption.
> Segmentation fault
>
> Can anyone help me to resolve this problem?
>
> Thanks
>
> Erwin
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