How many nodes do you have or did you have in your graph.

Perhaps you have to batch the deletes.

> MATCH (n)  
   LIMIT 10000
> OPTIONAL MATCH (n)-[r]-() 
> DELETE n, r



Michael

Am 06.02.2014 um 16:40 schrieb brian <blevine...@gmail.com>:

> Environment:
>   - Neo4j 2.0
>   - Oracle JDK 1.7
>   - OS X 10.9
>   - Node 0.10.21
> 
> I have a number of unit tests which exercise Neo4j via the REST API. Before 
> each test, the database is cleared using the following query:
> 
> MATCH (n)  OPTIONAL 
> MATCH (n)-[r]-() 
> DELETE n, r
> 
> This works fine for a while and then the Neo4j server becomes unresponsive 
> for this query.  When the query is issued, there is no response from the 
> server and my test eventually times out.  Once the server is in this state, I 
> can also issue this query from the Neo4j browser.  After a long delay, the 
> browser shows an "Unknown Error" message.  I can issue other queries 
> successfully, but the "delete all" query continues to time out or error out 
> until I restart the server.  There is nothing in the neo4j.0.0.log or 
> console.log that indicates any problem.
> 
> Any idea how I can debug this?
> 
> 
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