It is Jena 4.8.0 .

Jean-Marc Vanel
<http://semantic-forms.cc:9112/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me>
+33
(0)6 89 16 29 52


Le dim. 16 juil. 2023 à 21:53, Andy Seaborne <[email protected]> a écrit :

> https://github.com/apache/jena/issues/1499
>
> Are you are using 4.6.0?
>
>      Andy
>
> On 16/07/2023 14:54, Jean-Marc Vanel wrote:
> > Every few weeks, I get this stack, and the database is unusable
> afterwards.
> > Is there some "purge" to call now and then ?
> >
> > java.lang.Error: Maximum lock count exceeded
> >          at
> >
> java.base/java.util.concurrent.locks.ReentrantReadWriteLock$Sync.fullTryAcquireShared(ReentrantReadWriteLock.java:535)
> >          at
> >
> java.base/java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryAcquireShared(ReentrantReadWriteLock.java:494)
> >          at
> >
> java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1323)
> >          at
> >
> java.base/java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:738)
> >          at
> >
> org.apache.jena.dboe.storage.system.DatasetGraphTxnCtl.beginMultiMode(DatasetGraphTxnCtl.java:334)
> >          at
> >
> org.apache.jena.dboe.storage.system.DatasetGraphTxnCtl.tryNonExclusiveMode(DatasetGraphTxnCtl.java:252)
> >          at
> >
> org.apache.jena.dboe.storage.system.DatasetGraphTxnCtl.enterTransaction(DatasetGraphTxnCtl.java:110)
> >          at
> >
> org.apache.jena.dboe.storage.system.DatasetGraphTxnCtl.begin(DatasetGraphTxnCtl.java:74)
> >          at
> >
> org.apache.jena.dboe.storage.system.DatasetGraphTxnCtl.begin(DatasetGraphTxnCtl.java:99)
> >          at
> > org.apache.jena.sparql.core.DatasetImpl.begin(DatasetImpl.java:120)
> >
> > Jean-Marc Vanel
> > <
> http://semantic-forms.cc:1952/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me
> >
> > +33 (0)6 89 16 29 52
> > Twitter: @jmvanel , @jmvanel_fr
> >   Chroniques jardin
> > <
> http://semantic-forms.cc:1952/history?uri=http%3A%2F%2Fdbpedia.org%2Fresource%2FChronicle
> >
> >
>

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