I have a successful import using the bin/neo4j-admin tool, can see the new database folder in my /databases, have restarted the server, but cannot get the database to appear in the console as an option to switch to. Do you have any suggestions for getting a newly imported database to be available in the console?
I assume that you are referring to the Neo4j Desktop environment.
The Desktop currently seems to be designed to support local DBs created by the Desktop itself.
As a workaround, you can:
Create a new "Graph" in the Desktop, using the "Connect to Remote Graph" option.
Accept the default "bolt://localhost:7687" as the Connect URL (assuming the default is acceptable).
Manually start your local neo4j installation from the command line, and
Click Connect on your "Graph" to connect.
Be aware that the Desktop has fewer bells and whistles for "remote
graphs".
I resolved the issue. The steps I found to successfully import a set of CSV using the admin -import tool is to:
Stop the server
Run the admin -import tool and use --database=aDatabaseName
Start the server
In the console switch to the System database using the pulldown control
Run the following command at the system prompt: create database aDatabaseName
(should be the same name set in #2 above)
Switch to the database just created using the console pulldown control
I was able to see the database nodes and relationships I created following the above steps
This is what worked for me. I was trying to access my database generated through neo4j-admin on my Neo4j Desktop app browser console.
On Neo4j Desktop App open the browser of the database server you want to include the new database
Switch to the system database https://neo4j.com/developer/manage-multiple-databases/
:use system
as system, create the database you want to import
:create database dbname
Stop the server
Use the neo4-admin tool to import the database https://neo4j.com/graphacademy/online-training/v4/19-using-neo4j-admin-tool-import/ (make sure to use the same name --database dbname). Run these command on the terminal opened from the Desktop app under the databases>_Open Terminal. On windows the neo4j-admin.bat is located in the bin directory
start the server and open the neo4j browser and switch to the system database https://neo4j.com/developer/manage-multiple-databases/
:use system
To list all the database available to use as system
:dbs
switch to your imported database
:use dbmame
Your browser console is ready now for your queries.
Related
I have neo4j installed (& the conf file says that authentication is off.)
I start the movie demo --- and am told to connect to the server.
When I type
:server connect
with No Authentication
the browser tells me that there is a graph waiting for me but then gives the message "Unable to extract host form undefined."
If you simply want to run the movie demo, you might prefer to use the free Neo4j sandbox rather than Neo4j Desktop. It runs in a web browser and there is nothing to install.
https://sandbox.neo4j.com/
If you prefer to use Neo4j Desktop, confirm that your database has started.
https://www.markhneedham.com/blog/2018/03/20/neo4j-undefined-unable-to-extract-host-from-undefined/
I want to create a dump of the database that JQAssistant creates with a scan. So far i have tried to do this with the integrated server and by connecting jqassistant to a running database.
The problem with the integrated database is that i can't access a shell and therefore i don't know how i could create the dump.
Connecting to the running database also didn't work. I assume the problem here is the encryption, my server is running local and trying to connect to it with
jqassistant.sh scan -f my-project.jar -storeUri bolt://localhost:7687 -storeUsername neo4j -storePassword secret
which is the example from the jqa tutorial throws the error:
javax.net.ssl.SSLHandshakeException: General SSLEngine problem
so i assume i can't connect without ssl encryption.
I am using Neo4j server 3.5.15 and JQAssistant Commandline Tool version 1.9 which uses an integrated Neo4j 3.5.14 server.
If you can give me an new idea how to create a data dump out of the scan or how to fix one of the two given problems i would appreciate that a lot!
Thanks in advance!
I couldn't figure out a way to export the database with the commandline tool, but with the maven plugin. If you setup a maven project and include jqassistant as a plugin it offers you the option "export-database" which creates a Cypher script.
I have downloaded and attempted to install the 1.0.6 version of the Neo4j Desktop (Graph Platform) under Windows 10. The silent installation happens quickly without any prompting about where to install or what to expect installation-wise. Upon installation the Neo4j Desktop icon is added to the Windows desktop and the Desktop automatically opens with the appearance that it is all ready to go.
I select the default MyProject and click the New Database panel. The Local/Remote dialog pops up, I select Local. I accept the default Database name, don't add an optional description and click the Create button at which time I a red error dialog pops up saying:
`Database failed to create: Error: invalid central directory file header signature: 0xef42a50`
I get this result whether I create a new project and then attempt to create a new database in that new project. I get the same result if I change default names of proposed new databases. I can't attach to a remote new database because Neo4j does not appear to be running at this point and I have been given no indication where the installation even put anything.
When I ferret out the installation, I find it has silently been put in the typically hidden user subdirectories of "../AppData/Local/Programs/neo4j-desktop" and "..AppData/Roaming/Neo4j Desktop".
In the Roaming neo4j subdirectory, I find the log.log file which contains the single line of warning [2017-11-28 16:42:30:0451] [warn] auth is not initialised yet.
Any insights/recommendations appreciated. I am a "retired" #CitizenScientist and around most of the time to answer additional questions or to try any recommended fixes.
BTW, I have been using Neo4j Community Edition on my Windows dev box for years, mostly the manually installed version that provides support for running as a Windows service.
Also, my issue seems similar to this installation failure cited here: neo4j windows desktop: Unrecoverable authentication error.
I use <neo4j:config storeDirectory="/neo4j/target/data/db"> to config my neo4j database path,
and when tomcat started, the database files are locked by tomcat, and I can't start it using Neo4j official start tool, so how can I access my database in broswer like localhost:7474, or can spring connect a lunched neo4j server like mysql? and then I can access it through broswer.
You can work with one graph instance from one place only. If you are using it via tomcat in your code you wont be able to start it from the community tool. You would need to stop your tomcat and then run the tool to view it in the browser.
I have a rails application running on mac and an MS Access database located on windows server PC which data are changing daily.
Both may mac and windows PC are in the same network and also I have permission to connect to server remotely by telnet.
How may I just read data from my mac using ruby to publish it?
In database.yml, you should configure the db parameter, like adapter, host, port, username, password. I am not sure if there is Access DB adapter for Rails. And then, you can create your models corresponding to the DB tables. Please refer to this
I did the almost same thing, except I use Sqlite tables in local host and PSQL tables in remote server in development. Ater you finish the configure and models creation, you can use the model as normal, almost no any difference.