Hi,
Pleace help me. When i start my graph, it appears the error in the title. What should i do, i really need that for my bachelor thesis and would be very happy if someone can write me. I have tried to restart the programm, but nothing.. I also have raed the advices in the forum and tried to follow then, but nothing
Hi,@cobra
I have tried to restart my computer, because one of the advices was to do that. Nothing. I am not a programmierer, therefor i do not know what means recreate a date base. I am afraid that i lost the data i have created before, 108 nodes and 120 relationships .. can you connect with me on my gmail or facebook
gmail: hristian.h.hristov@gmail.com
facebook: Hristiyan Hristov
When I said recreate the database, I mean create a new database:) Your database looks very small so it should be quick:)
Regards,
Cobra
First of all, you should defenitly create a cypher script to recreate your database anytime 
This error happened to me when
Before you close Neo4j Desktop or do an update, you must close the database properly
Sorry, but I don't provide help outside of this forum 
Regards,
Cobra
Which version of Neo4j Desktop are you using and what is the version of your database?
Where did you find the data that you put in your database?
By script I mean a file where you can write all cypher requests you used to put the data in it, like this in the future you will just have to copy pasta cypher requests in Neo4j Desktop, you can even save these requests in Neo4j Desktop
Regards,
Cobra
Hi Cabra
The version of the data base is 3.5.14 and the version of the desktop is 4. I interned the database manually, that were the CVS of persons, name, age, education, university etc.
Now when I don't have an access to the graph, starting it, but I although see that there are created nodes and relationships, can i recreate my database that i entered before.
How can I create this Cypher script, that must be done before starting the work with Neo4j, at very the beginning?
Regards
На сб, 6 юни 2020 г., 15:54 Maxime via Neo4j Online Community <neo4jcommunity@discoursemail.com> написа:
Neo4j Desktop version is something like 1.2.8 not 4
Do you use Neo4j Server or a local database created in Neo4j Desktop?
How did you import your data in the database?
Regards,
Cobra
oh, you are right, the version is 1.2.4. I use local data base, i think so. I import my data manually, for example i write the code create ( p:Person{ name"Jack") etc.
I see
Like this if it happens again, you will just have to copy pasta everything at the same time
Regards,
Cobra
Yes, just open a txt file and put your requests in it It will be the easiest way for you
Regards,
Cobra
Hello Hristian,
I already had this error sometimes. and I found a workaround, similar to the advice from Cobra:
C:\neo4j\neo4jDatabases\database-56ce1c35-11f6-4006-9521-dc42a79a7cd2\installation-4.0.4\import)for /f "delims=" %%# in ('powershell get-date -format "{dd-MMM-yyyy.HH.mm}"') do @set _date=%%#
../bin/neo4j-admin.bat dump --database=neo4j --to=./mydb-%_date%.neo4j
(check if database name inside data/databases is neo4j, before 4.0 it was always graph.db, eventually set --datebase=graph.db)
4.open command prompt, do cd C:\neo4j\neo4jDatabases\database-56ce1c35-11f6-4006-9521-dc42a79a7cd2\installation-4.0.4\import
5. execute dump.bat, wait a while, should create a .neo4j file there
6. create a new database, fill it with one dummy node
7.in directory import create a load.bat:
../bin/neo4j-admin load --database=neo4j --from=./nameof dump. with data.neo4j --force
, eventually graph.db instead of neo4j, if refused
8. execute load.bat, should recreate your db.
this is the procedure to save my own db after the error above, I'm actually in Desktop 1.2.7 (upgrade to t.2.8 never worked) and neo4j 4.0.4
Fortunately after having opened the newly created db, all went fine,
BUT the next day I had again the same error,
first error in log: Unable to register procedure, because the name apoc.spatial.sortByDistance is already in use., I uninstalled apoc and got it again: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@191ec193' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.graphdb.event.TransactionEventHandler
whole log file is attached
20200606-WolfgangIrler-error-log.txt (10.8 KB)
I fear I have to repeat the procedure described above, good luck for you
Hopefully, some developer reads this and find the error
WJI
Thank you, Cabra, thank you irler, for the information. I will use it by working with the Neo4j. I have another question. After I create my graph I need to brenn it to CD so that my professors from the university could just see what I did. But when I write my code in a separate text file, ecerytime when I copy paste it in the Neo4j browser it shows me an error because the code is not aligned correctly. What advice would you give me?
@Cabra @irler.clesius With another words, how can I align/format the code from my text file in Neo4j browser
Hi,
what do you mean with "align"? please, paste the whole cypher error.
I suppose this is more a problem with quotes, hence check if " and ' quotes match always. A constructed code in a text editor may have another quote sequence than necessary for cypher.
BTW, in my last explanation, I forgot to mention to disable an important conf line:
Whether requests to Neo4j are authenticated.
To disable authentication, uncomment this line
dbms.security.auth_enabled=true
I was remembered this (necessary for upgrade from 3.5 to 4.0), when I repeated again my own recommendations, because without enabling, I got the former "password error".
Now for "brenning" a Cd for your professor. For visualizing a neo4j without server, I use a screenscanner to scan still images (cypher + nodes display) or still better, a short film using the neo4j browser. Alternatively you could put your db in a Neo4j sandbox and communicate the address.
@irler.clesius do you know if there is an alternative way to use Neo4j. I'v heard that there is online Neo4j server, something like a cloud where I work online and there is no possibility that the data base go lost
@hristian.h.hristov it's Neo4j Aura 
Regards,
Cobra
@cobra that is a paid version, okey if i chose it, how much memory do i need, there is many options 1, 2, 4, 8 GB. I will create max.600 nodes and 600 relationships
and one more question. At the End can i transfer the database and the visualisation to my professor ? And is that reliable?
There is Neo4j sandbox that is free
I never use it but I think you can share the database after
But you should still keep a file with all your cypher requests, moreover what was the error that you got when you did it?
Regards,
Cobra