An error has occured. Please see log file - eclipse juno

Question

Whenever I start up Eclipse Juno, it gives me an error saying:

An error had occured. Please see the log file:

C:\\Program Files\\eclipse\\

Answer 1

Try deleting following file from workspace.

YOUR_WORKSPACE/.metadata/.plugins/org.eclipse.core.resources/.snap

Or try launching it from console.

C:\path\to\eclipse\eclipse -clean

Answer 2

My OS architecture is 64-bit so downloaded Eclipse Oxygen 64-bit version and got this error. Tried various solutions posted here but didn't help. Then downloaded Eclipse Oxygen 32-bit version and it works well.

Answer 3

In my mac machine, I checked whether I installed two java versions or not. I got this error. Because i installed two java at a time.

User -> Library -> Java -> JavaVirtualMachines -> version 1.8.0 and version 11.0.1 has been installed.

I removed version 11.0.1. Now its working fine.

Answer 4

For me it was down to a locking/permissions bug on

(path to Eclipse IDE)\configuration\org.eclipse.osgi.manager.fileTableLock

See here

Spring Tool Suite 4 (64 bit for Windows Server 2016)

Version: 4.2.2.RELEASE Build Id: 201905232009

based on Eclipse

Version: 2.2.500.v20190307-0500 Build id: I20190307-0500

wouldn't launch and a pop up dialog appeared saying:

launch error has occurred see log file null

(This became apparent from the latest text log file in the folder (path to Eclipse IDE)\configuration)

!ENTRY org.eclipse.osgi 4 0 
2019-06-19 18:41:10.408
!MESSAGE Error reading configuration: C:\opt\sts-4.2.2.RELEASE\configuration\org.eclipse.osgi\.manager\.fileTableLock (Access is denied)
!STACK 0
java.io.FileNotFoundException: C:\opt\sts-4.2.2.RELEASE\configuration\org.eclipse.osgi\.manager\.fileTableLock (Access is denied)
...

I had to go and tweak the permissions via File Explorer (Full access).

It appeared as if the IDE was doing nothing for a while.

The splash screen for Spring Tool Suite (based on Eclipse) eventually disappeared and the IDE started up again.

Now everything is back working correctly again.

Answer 5

In my case, error was due to Java 14 , which is not an LTS, downgraded it to java 8 and it worked.

Answer 6

The best way is to delete all the *.snap files from /.metadata/.plugins/