The above exception is thrown from the call stack indicated below while 
traversing a neo4j graph using the EmbedesReadOnly database. Using 1.4M04.

The application is running with 1gb of heap with defaulting all other 
parameters except cache_type=weak on windows. 

I found some reports of this exception being thrown at shutdown back 
in January but this is not happening at shutdown and I could find no posted 
resolution of that thread anyway.

Can anyone suggest what the cause if this exception is?

Thanks

Paul

> 

> Exception in thread "main" java.nio.channels.NonWritableChannelException
>         at sun.nio.ch.FileChannelImpl.write(Unknown Source)
>         at 
> org.neo4j.kernel.impl.nioneo.store.AbstractPersistenceWindow.writeOut(AbstractPersistenceWindow.java:104)
>         at 
> org.neo4j.kernel.impl.nioneo.store.PersistenceWindowPool.refreshBricks(PersistenceWindowPool.java:536)
>         at 
> org.neo4j.kernel.impl.nioneo.store.PersistenceWindowPool.acquire(PersistenceWindowPool.java:128)
>         at 
> org.neo4j.kernel.impl.nioneo.store.CommonAbstractStore.acquireWindow(CommonAbstractStore.java:526)
>         at 
> org.neo4j.kernel.impl.nioneo.store.RelationshipStore.getChainRecord(RelationshipStore.java:327)
>         at 
> org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:114)
>         at 
> org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:97)
>         at 
> org.neo4j.kernel.impl.persistence.PersistenceManager.getMoreRelationships(PersistenceManager.java:108)
>         at 
> org.neo4j.kernel.impl.core.NodeManager.getMoreRelationships(NodeManager.java:603)
>         at 
> org.neo4j.kernel.impl.core.NodeImpl.getMoreRelationships(NodeImpl.java:399)
>         at 
> org.neo4j.kernel.impl.core.IntArrayIterator.hasNext(IntArrayIterator.java:93)
>         at 
> org.neo4j.kernel.impl.core.NodeImpl.getSingleRelationship(NodeImpl.java:218)
> 
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