First of all, if you have weird errors while trying to install neo4j server on a machine running under CentOS, it looks like you are trying to perform installation from a folder within your $HOME directory. Which the newly created neo4j user (if you do a default installation) won’t be able to access. In order to avoid it, unpack the neo4j-community-x.x.x package to the /opt/ directory and

You will also need to install the Oracle Java to support the neo4j installation. A good explanation of how to do it can be found on the ubuntu stack overflow. To sum up:

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer
sudo apt-get install oracle-java8-set-default

Only install oracle java as default if you don’t have other programs relying on the

If you meet the “java heap out of space error”, what you have to do is to go to the $NEO4J_HOME directorty (where you’ve installed the neo4j files), then to config and then in the neo4j-wrapper.conf file edit the following lines:

wrapper.java.initmemory = 64
wrapper.java.maxmemory = 512 (increase to 1-4 Gb if you have >4Gb of RAM)