Hi Paolo,
How did you increase the amount of available memory ?
Can you provide a copy of your Virtuoso configuration (virtuoso.ini)
and log (virtuoso.log) files for analysis ...
Best Regards
Hugh Williams
Professional Services
OpenLink Software
Web: http://www.openlinksw.com
Support: http://support.openlinksw.com
Forums: http://boards.openlinksw.com/support
On 31 Aug 2009, at 17:46, Paolo Ciccarese wrote:
I am currently working on some algorithms for indexing subclasses
in ontologies expressed in OWL. I therefore traverse the ontology
performing a list of queries. Unfortunately, most of the times, the
indexing process is not completing due to the following error:
Could not get JDBC Connection; nested exception is
virtuoso.jdbc3.VirtuosoException: Connection failed: Can't assign
requested address
org.springframework.jdbc.CannotGetJdbcConnectionException: Could
not get JDBC Connection; nested exception is
virtuoso.jdbc3.VirtuosoException: Connection failed: Can't assign
requested address
at
com.commonsemantics.grails.services.utils.QueryService.getSparqlResult
RowMaps(QueryService.groovy:23)
at com.commonsemantics.grails.services.utils.QueryService
$getSparqlResultRowMaps.call(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.q
uerySubclasses(SubclassesIndexingService.groovy:224)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$querySubclasses.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.r
ecursiveIndexing(SubclassesIndexingService.groovy:154)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.t
his$2$recursiveIndexing(SubclassesIndexingService.groovy)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$this$2$recursiveIndexing.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.r
ecursiveIndexing(SubclassesIndexingService.groovy:163)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.t
his$2$recursiveIndexing(SubclassesIndexingService.groovy)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$this$2$recursiveIndexing.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.r
ecursiveIndexing(SubclassesIndexingService.groovy:163)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.t
his$2$recursiveIndexing(SubclassesIndexingService.groovy)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$this$2$recursiveIndexing.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.r
ecursiveIndexing(SubclassesIndexingService.groovy:163)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.t
his$2$recursiveIndexing(SubclassesIndexingService.groovy)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$this$2$recursiveIndexing.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.r
ecursiveIndexing(SubclassesIndexingService.groovy:163)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.t
his$2$recursiveIndexing(SubclassesIndexingService.groovy)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$this$2$recursiveIndexing.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.r
ecursiveIndexing(SubclassesIndexingService.groovy:163)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.t
his$2$recursiveIndexing(SubclassesIndexingService.groovy)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$this$2$recursiveIndexing.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.i
ndexHierarchy(SubclassesIndexingService.groovy:136)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.t
his$2$indexHierarchy(SubclassesIndexingService.groovy)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$this$2$indexHierarchy.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.i
ndexVocabulary(SubclassesIndexingService.groovy:86)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$indexVocabulary.callCurrent(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService.i
ndexVocabularies(SubclassesIndexingService.groovy:69)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingService
$indexVocabularies.call(Unknown Source)
at
com.commonsemantics.grails.service.indexes.SubclassesIndexingServiceTe
sts.testSomething(SubclassesIndexingServiceTests.groovy:35)
at _GrailsTest_groovy$_run_closure4.doCall(_GrailsTest_groovy:203)
at _GrailsTest_groovy$_run_closure4.call(_GrailsTest_groovy)
at _GrailsTest_groovy$_run_closure2.doCall(_GrailsTest_groovy:147)
at _GrailsTest_groovy$_run_closure1_closure19.doCall
(_GrailsTest_groovy:113)
at _GrailsTest_groovy$_run_closure1.doCall(_GrailsTest_groovy:96)
at TestApp$_run_closure1.doCall(TestApp.groovy:66)
at gant.Gant$_dispatch_closure4.doCall(Gant.groovy:324)
at gant.Gant$_dispatch_closure6.doCall(Gant.groovy:334)
at gant.Gant$_dispatch_closure6.doCall(Gant.groovy)
at gant.Gant.withBuildListeners(Gant.groovy:344)
at gant.Gant.this$2$withBuildListeners(Gant.groovy)
at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
at gant.Gant.dispatch(Gant.groovy:334)
at gant.Gant.this$2$dispatch(Gant.groovy)
at gant.Gant.invokeMethod(Gant.groovy)
at gant.Gant.processTargets(Gant.groovy:495)
at gant.Gant.processTargets(Gant.groovy:480)
Caused by: virtuoso.jdbc3.VirtuosoException: Connection failed:
Can't assign requested address
at virtuoso.jdbc3.VirtuosoConnection.connect(Unknown Source)
at virtuoso.jdbc3.VirtuosoConnection.connect(Unknown Source)
at virtuoso.jdbc3.VirtuosoConnection.(Unknown Source)
at virtuoso.jdbc3.Driver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:140)
I am working in a Grails (version 1.1.1) environment, Virtuoso
(version 5.0.11), Drivers (jdbc3).
I am performing really simple queries of the type:
sparql $NAMESPACE_PREFIXES SELECT ?subject ?label FROM <
$vocabularyUri> WHERE {?subject rdfs:subClassOf <$uri>. ?subject
rdfs:label ?label}
Again, with the same setup, sometimes (rarely) the process
completes sometimes not. It blows up in different steps of the
indexing (can be after 129, 876, 3000, 12000... queries).
Increasing the amount of memory available delays the blow up, but I
still have the problem.
Any idea that could help me?
Thank you
Paolo
--
Paolo Ciccarese
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