I'm using windows 10. Neo4j browser update to version 1.3.5. After that I always get an error saying
"Database failed to start: Database process terminated, see logs..
Check the logs"
When I check the folder logs I see nothing. Please help
I checked the logs there %USERPROFILE%.Neo4jDesktop\log.log They say they can not read somewhere in AppData folder.
After I uninstalled and deleted some folder inside somewhere AppData\Local manually and then reinstalling Neo4j Desktop, it worked fine.
I deleted some folders inside somewhere AppData manually. I think, when I uninstall Neo4j Desktop and check to delete all the folders, it should have deleted them but it didn't.
It is very strange that when I check the newest version on the website I see 1.3.4. But somehow my neo4j desktop suggested 1.3.5 and installed it.
Related
Downloaded Neo4j community version, the file named "neo4j-desktop-offline-1.1.13-setup.exe". Running the binary successfully installed. Launching the application takes me to configuration of database location "Please choose path where you want to store application data" and regardless of what path i choose, clicking "Confirm" does not do anything at all and it remains on the same screen.
Am using Windows 10.
I also got the same problem. I fixed it by adding a new PATH in environmental variables,
Advanced System Settings > Environment Variable > system variable > path > new: C:\Windows\System32\wbem
After setting, reopen the Neo4j application and it will allow you a select the path where you want to save application data.
REASON
In the developer console, you will see the following error
Uncaught (in promise) Error: Command failed: wmic logicaldisk get
size,freespace,caption 'wmic' is not recognized as an internal or
external command, operable program or batch file.
The actual WMIC binary is located at C:\Windows\System32\wbem\WMIC.exe you need to set the path if it is not yet defined.
try opening http://127.0.0.1:7477 or http://localhost:7474 in your browser
I had the same problem using Windows 7, and after trying the solutions others have suggested around fixing the Path environment variable to no avail, I found upgrading PowerShell solved the problem. To do this, I upgraded my Windows Management Framework (to 5.1 at the time of this writing) by following the appropriate link for my version of Windows from here:
https://learn.microsoft.com/en-us/powershell/scripting/windows-powershell/install/installing-windows-powershell
For Windows 7, I retrieved Win7AndW2K8R2-KB3191566-x64.zip from the Download link found here: https://www.microsoft.com/en-us/download/details.aspx?id=54616.
I unzipped and installed it, and after a reboot it worked (for Neo4j Desktop 1.4.15). Upgrades to WMF for other versions of Windows are on the same page.
On ubuntu 16.04, when trying to uninstall neo4j I typed:
sudo apt-get purge neo4j*
However, the neo4j folder and all of the data still exist in
/var/lib/neo4j
Secondly, I tried to just install the newest version using:
sudo apt-get install neo4j
and when I checked the version from the commandline I got:
neo4j 3.3.4
This is what I want, but when I start the service and check the version in the web application (http://localhost:7474/browser/), it says that the neo4j version is still 3.1.4.
So, basically I would like to completely remove neo4j, and download the newest version. What is the recommended way of doing this in ubuntu 16.04.
I'm new to neo4j, so I'm sure I'm missing something. Thanks for your help.
I followed the instructions here and they really helped.
Specifically, I deleted my old neo4j folder located in /var/lib/, and in it's place, I put the new version (which was downloaded from the link above and the top folder was renamed "neo4j"). I'm rebuilding my database from scratch, so I wasn't concerned about keeping any of the data I had previously (although maybe you could just copy it over to the new neo4j folder, I don't know).
I started the neo4j service by typing
/var/lib/neo4j/bin/neo4j start
and everything was brand new and seemed to be working. Part of the reason I did a fresh install was because I could not understand how to upgrade based on the documentation. I'll have to look into that more.
I also added the jar file for the corresponding apoc procedures to my plugins folder (/var/lib/neo4j/plugins), and adjusted the neo4j conf file (var/lib/neo4j/conf/neo4j.conf) accordingly:
dbms.security.procedures.unrestricted=apoc.*
and apoc procedures are now being recognized, which is fantastic.
Perhaps there is a better way to have done this, but things seem to be working so far. My database is small right now, so I can build it from scratch easily. Let me know if there is a better way to go about it.
well, I have tried the method above and it did not work. Since the main purpose is to use the verison 4.x.x of neo4j, I tried anothor way to reach the same effect.
At first, download the neo4j-community-4.x.x and put it in someplace where you want, then open the config/neo4j.conf file and change some configuration as follows:
dbms.connector.bolt.listen_address=:7688
dbms.connector.http.listen_address=:7475
After that, start the neo4j by running neo4j start and you shall access the neo4j from browser at localhost:7475, it did work for me. As for the old version, just let it go.
I have an instance in AWS hosting a Neo4j DB.
The version im using is 2.3.1.
I backed it up using "neo4j-backup".
I then zipped the files and uploaded to an external storage.
I wanted to restore the DB to another instance I have using the same version (2.3.1), so I copied the files to the same folder the 1st instance is using.
When I run the neo4j console command it states:
ERROR Neo4j cannot be started, because the database files require upgrading and upgrades are disabled in configuration. Please set 'allow_store_upgrade' to 'true' in your configuration file and try again.
Of course the "allow_store_upgrade" is commented out,
Do I have to do the upgrade when restoring?
How can I find the DB version?
If you're using the same version you shouldn't need to comment it out. Though I don't think it would harm anything if you do (especially if you still have that backup somewhere else).
You should be able to find the version of Neo4j in the CHANGES.txt / README.txt files. It should also output the version in data/graph.db/messages.log when you start up the server. Also if you go to the web console (at http://localhost:7474 by default) it will show you the version.
I just upgraded my Neo4J from 1.9.4 to 2.0.1 newest stable release.
The upgrade instructions say that you can just start the new Neo4J with the old database provided that
allow_store_upgrade=true
which is exactly what I did.
However, when I copied my old graph.db folder (which contains all data) into the data folder of the new installation and tried to run neo4j for the first time, it didn't work. The error message I got in terminal upon neo4j start was
Using additional JVM arguments: -server -XX:+DisableExplicitGC -
Dorg.neo4j.server.properties=conf/neo4j-server.properties -
Djava.util.logging.config.file=conf/logging.properties -
Dlog4j.configuration=file:conf/log4j.properties -XX:+UseConcMarkSweepGC -
XX:+CMSClassUnloadingEnabled
Starting Neo4j Server...WARNING: not changing user
process [462]... waiting for server to be ready... Failed to start within 120 seconds.
Neo4j Server may have failed to start, please check the logs.
When I removed the graph.db folder from the new installation and ran neo4j start once again, it all started fine, but with a new clean database, of course.
FIY I run it on Mac OS X 10.9, the newest Java 1.7.0_51-b13 SDK installed.
Does anybody know what I did wrong? Thank you!
Ok, I found a solution. The upgrade instructions say that you should uncomment this string in conf/neo4j.properties:
#allow_store_upgrade=true
But what they don't say is that you should uncomment is in the OLD database BEFORE you shut it down the one last time in the old version.
Then, when you install the new database, just copy the graph.db folder into the /data folder of the new 2.0.1 Neo4J, then, before launching it, go to /conf folder of the NEW database, find that same neo4j.properties file, UNCOMMENT that same line:
allow_store_upgrade=true
Then launch the new 2.0.1 Neo4J database for the first time, make sure the data is all fine.
Don't forget to then comment that option once you shut down the database.
A bit of a complicated way to update, would be great if Neo4J provided a better and more streamlined way to do that...
I installed Neo4j as instructed in the site and was able to install and stat server. However I tried to copy the Beer example DB by stopping the server and deleting the current graph.db in the \data folder and replaced with the one Beer example downloaded from online (graph.db folder). This is the only step I did.
Now the issue is, when i tried to start the Server I get "StartService FAILED 1053"
I am using following command on the powershell in windows - c:\neo4j-community-2.0.0-M03> .\bat\Neo4j.bat start
Can someone please help if I have done anything wrong here.
Thank you!
You are running neo4j 2.0 against an older database file. You'll need to set the config parameter to allow the store to be upgraded before starting. See instructions here:
http://docs.neo4j.org/chunked/milestone/deployment-upgrading.html#_explicit_upgrade