Java heap space error neo4j

Question

I've just setup neo4j 2.1.3 community for the first time and I run into a java heap space OutOfMemoryError when trying to load a dataset of about 17M.

I'm working on a Mac with 16GB memory and OS X 10.9.4 java version 1.7.0_21 and I tried increasing the heap size via the command line with:

java -Xmx2048m

Problem is that the jvm doesn't seem to recongize this. I'm not experienced in setting java settings this way.

Any suggestions?

Answer 1

You can change settings of JVM heap in configuration file neo4j-wrapper.conf

# Java Heap Size: by default the Java heap size is dynamically
# calculated based on available system resources.
# Uncomment these lines to set specific initial and maximum
# heap size in MB.
#wrapper.java.initmemory=512
#wrapper.java.maxmemory=512

http://neo4j.com/docs/stable/server-performance.html

Answer 2

Its worth noting that these configuration settings have now been moved to neo4j.conf: http://neo4j.com/docs/operations-manual/current/performance/#heap-sizing