Neo4j community conflicts with neo4j desktop

Preface ： Blogger is installing neo4j community4.4.8 after , in consideration of community Less features in version , So install desktop1.4.15. After installation , Encountered the problems recorded below . The problem of error reporting has not been solved , Uninstall both versions , reinstall , At the moment, everything is normal .

Add ：

• On the first entry into neo4j desktop after , Automatically prompt whether to change the port number , The blogger confirmed that the port number has been changed , Unknown relationship between the replacement port number and the failure to connect to the database .

• There is an article about the conflict between the two versions , May refer to ：Neo4j At the same time to install neo4j community and desktop The port is occupied

• Uninstalled software may exist Unload residue , My uninstall process is as follows , For reference ：

  1. uninstall neo4j Service for （neo4j uninstall-service）
  2. Delete neo4j community Unzip the file
  3. Clear to... In the environment variable neo4j community Configured environment variables
  4. adopt Control panel uninstall neo4j desktop
  5. Delete C:\Users\LENOVO\AppData Of local、LocalLow、Roaming The three folders are about neo4j All files for
  6. Delete .Neo4j Desktop Data files , Default in C:\Users\LENOVO Under the folder
  7. use Everything With neo4j Search for files for keywords , Delete related files
  8. Use cleaning tools , Clean up related files 、 The registry
  9. Restart the computer （ If you don't trust me , After restart, you can use the cleaning tool to clean it once ）

An error log

Report a mistake ： Log file recurrence neo4j-etl-ui-1.5.1.tgz

Problem description ： Log files /.Neo4jDesktop/log.txt Repeat the following , also Graph Apps Modular Neo4j ETL Tool Always dark
Speculate whether https://neo.jfrog.io/neo/api/npm/npm/neo4j-etl-ui/-/neo4j-etl-ui-1.5.1.tgz Incorrect installation

resolvent ： Download via link neo4j-etl-ui-1.5.1.tgz File and put it in .\Neo4j Desktop\resources\offline\graphApps Under the table of contents

Operating results ：Graph Apps Modular Neo4j ETL Tool Display in bright color , The log file does not appear again neo4j-etl-ui-1.5.1.tgz

[2022-06-25 23:01:19.940] [info]  GraphApp[9ba1222b-e09c-466e-a669-4949b16a95d9] Downloading https://neo.jfrog.io/neo/api/npm/npm/neo4j-etl-ui/-/neo4j-etl-ui-1.5.1.tgz {
  percent: 0.9828912162431994,
  size: { total: 17353133, transferred: 17056242 },
  speed: 550201.3548387097,
  time: { elapsed: 30, remaining: 1 }
}
[2022-06-25 23:01:20.200] [info]  GraphApp[9ba1222b-e09c-466e-a669-4949b16a95d9] Downloading https://neo.jfrog.io/neo/api/npm/npm/neo4j-etl-ui/-/neo4j-etl-ui-1.5.1.tgz {
  percent: 0.9913885867180295,
  size: { total: 17353133, transferred: 17203698 },
  speed: 550518.336,
  time: { elapsed: 31, remaining: 0 }
}
[2022-06-25 23:01:20.398] [info]  GraphApp[9ba1222b-e09c-466e-a669-4949b16a95d9] Downloading https://neo.jfrog.io/neo/api/npm/npm/neo4j-etl-ui/-/neo4j-etl-ui-1.5.1.tgz {
  percent: 1,
  size: { total: 17353133, transferred: 17353133 },
  speed: 550893.1111111111,
  time: { elapsed: 31, remaining: 0 }
}
[2022-06-25 23:01:20.402] [info]  Download file stream closed
[2022-06-25 23:01:20.490] [info]  Shasum match OK

Error reporting II ：DBMS Can't start

DBMS failed to start: Startup timed out, see logs..
The following logs and troubleshooting guide may help you diagnose the issue:
Desktop logs
Neo4j DBMS logs
Troubleshooting guide

resolvent ： Browser login http://localhost:7474/browser/ Enter the command :server disconnect; Or starting DBMS front , stay cmd In the implementation of neo4j stop command （ The premise is that neo4j service ,cmd Run in neo4j install-service）,activate DBMS Try restarting DBMS.

Operating results ： Tested , Sometimes It will start normally , However, it is always in... After startup fetching database Stage , The exact reason is unknown

Error reporting 3 ：neo4j The connection fails

Problem description ： stay neo4j browser Middle link neo4j, An error is as follows

 ServiceUnavailable: WebSocket connection failure. Due to security constraints in your web browser, the reason for the failure is not available to this Neo4j Driver. Please use your browsers development console to determine the root cause of the failure. Common reasons include the database being unavailable, using the wrong connection URL or temporary network problems. If you have enabled encryption, ensure your browser is configured to trust the certificate Neo4j is configured to use. WebSocket `readyState` is: 3

Show the following in the log file

[2022-06-26 08:03:05.579] [info]  Check if neo4j is available on { host: '127.0.0.1', path: '/', port: 11003 }
[2022-06-26 08:03:05.581] [info]  Check if neo4j is available on { host: '127.0.0.1', path: '/', port: 11004 }
[2022-06-26 08:03:05.583] [info]  Neo4j @ 11003 is down. connect ECONNREFUSED 127.0.0.1:11003
[2022-06-26 08:03:05.585] [info]  Neo4j @ 11004 is down. connect ECONNREFUSED 127.0.0.1:11004
[2022-06-26 08:03:06.599] [info]  Retrieved status for DBMS[database-4ede501c-126a-4183-b79e-a69b75eae23b]: false

resolvent ： no

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Harvest ：

1. Set a time for the problem , If it exceeds the expected time , Use the most basic method , Such as ： uninstall
2. Learn to read log files