问题
I'm using Neo4j graph DB and viewing the data on the browser. So whenever I run a code, i need to change database location field in neo4j-server.properties file.
When i try to access DB with browser on I'm getting the following error:
Exception in thread "main" java.lang.IllegalStateException: Unable to lock store
[<DB path>], this is usually a result of some other Neo4j kernel running using
the same store.
Is it possible to view the database without locking the store?
回答1:
There is another process using the db. For instance, you opened it with another program (e.g. a gremlin shell in a terminal) or there is another neo4j instance running.
If you are using a Unix-like system (Linux, MacOSX, etc.), then you can use lsof to determine the processes that have opened your db. For instance, if the path to my db is /home/user/db/myneo4j.db, then I would search for:
$ lsof /home/user/db/myneo4j.db/neostore.propertystore.db.index
Or you can just try:
$ lsof | grep myneo4j.db
That will tell you the process ID that has taken (locked) the database.
回答2:
Are you sure no java process is running against the datastore before you start the neo4j server to view your data?
来源：https://stackoverflow.com/questions/11309266/neo4j-unable-to-lock-store