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neo4j-contrib / neo4j-apoc-procedures

Awesome Procedures On Cypher for Neo4j - codenamed "apoc"                     If you like it, please ★ above ⇧            
https://neo4j.com/labs/apoc
Apache License 2.0
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Couldn't install APOC in Neo4j Desktop #1722

Closed sangee14 closed 3 years ago

sangee14 commented 3 years ago

I am using Neo4j community edition. I couldn't install APOC plugin. APOC plugin install button is disabled.

APOC

I followed the installation steps for APOC,

  1. Downloaded APOC jar from this link (version: apoc-4.2.0.0-all.jar) and placed it in plugins folder

  2. Modify the Neo4j Configuration file, present in the location: <Neo4j Path>\conf\neo4j.conf

    Uncomment dbms.directories.plugins=plugins

    allows Neo4j to load this plugins directory to server

    Uncomment and modify as following

    dbms.security.procedures.unrestricted=apoc.*
dbms.security.procedures.whitelist=apoc.*,apoc.coll.*,apoc.load.*
#loads unrestricted and white-listed procedures/ plugins to the server

    Add the following lines

    apoc.import.file.enabled=true
apoc.export.file.enabled=true

    Useful for reading and writing data from and to files respectively

  3. Restart the server

but couldn't start the Neo4j server and getting an error saying that

APOC couln't set a URLStreamHandlerFactory since some other tool already did this (e.g. tomcat). This means you cannot use s3:// or hdfs:// style URLs in APOC. This is caused by a limitation of the JVM which we cannot fix.

mneedham commented 3 years ago

Hey,

I don't think that error is usually a reason for the server failing to start.

Given you are using a 4.1 database, you'll want to use the latest 4.1 version of APOC (https://github.com/neo4j-contrib/neo4j-apoc-procedures/releases/tag/4.1.0.4).

There are sometimes lower-level changes to the database in between point versions (e.g. 4.1 -> 4.2), which mean that 4.2 APOC won't work with 4.1 Neo4j.

Cheers, Mark