Have you just upgraded to neo4j 1.3? In that case you need to explicitly say that neo4j can upgrade your store, otherwise an exception (wrapped in a TransactionFailureException) will be thrown at startup. It would be helpful with the full stacktrace though, it always is.
If it indeed is an exception regarding upgrade (take a look at the nested exception if it says about allowing the upgrade of your store) then see documentation on how to upgrade here: http://docs.neo4j.org/chunked/stable/deployment-upgrading.html and more specifically http://docs.neo4j.org/chunked/stable/deployment-upgrading.html#_special_upgrade hopefully that helps! 2011/4/15 mindthief <mindthi...@gmail.com>: > Hi All, > Just trying to get started with Neo4j, and I am seeing the issues reported > above. Initially I was getting the "IllegalStateException: Unable to lock > store" message, and now I'm getting the other message > "TransactionFailureException: Could not create data source". The code > correctly created the db the first time I ran it -- these errors are > happening on subsequent runs. There is only one application, so no > possibility of another being open and accessing the db. I am using Groovy > and Blueprints. > > Any advice would be appreciated, thanks! > -M > > > -- > View this message in context: > http://neo4j-user-list.438527.n3.nabble.com/Neo4j-Groovy-and-Unable-to-lock-store-this-is-usually-a-result-of-tp1567247p2822672.html > Sent from the Neo4J User List mailing list archive at Nabble.com. > _______________________________________________ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
