Hello Colin, Thanks again for your reply, and for the clarification about the graph.commit() method.
By examining stack traces of these exceptions that I got I can tell that all of them come from reading operations after a write: - In the 1. run connection is lost when the application is obtaining the total number of documents. - In the 2. run exception is thrown when the application is refreshing a document list after a write and loading the first document (ch.ringler.attachment.mgm.document.manager.internal.OrientDBDocumentManager$2.load(OrientDBDocumentManager.java:1) ). - In the 3. run exception is thrown when the application is refreshing a document list after a write and loading document thumbnails ( ch.ringler.attachment.mgm.document.manager.internal.OrientDBDocumentManager.getThumbnail(OrientDBDocumentManager.java:1370) ) - In the 4. run no information is available - 5. run completed successdully - In the 6. run no information is available - In the 7. run exception is thrown when the application is refreshing a document list after a write and loading document thumbnails ( ch.ringler.attachment.mgm.document.manager.internal.OrientDBDocumentManager.getThumbnail(OrientDBDocumentManager.java:1378) ) My opinion, that this happens only while performing reading after writing, is backed up by the fact that everything will work like charm if I temporary disable refreshing a document list, loading of thumbnails and extracting the document counts, and leave just the writing part. I was able, from the application, to upload 500 documents in one go, without any problems... When this error occurs, there are no related information available in the server logs and I do not need to restart the server, only the application. And yes, indeed, I was able to connect to a database from a console after a connection has been lost from the application. Cheers and thanks, Ivan -- --- You received this message because you are subscribed to the Google Groups "OrientDB" group. To unsubscribe from this group and stop receiving emails from it, send an email to orient-database+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
