KNIME 5.2 run problem ...

[ssimara]

Dear Knimers, after I decided to completely switch to the new version of Knime (5.2) and after I uninstalled the old one (4.7), I got stuck in the inability to start (load) the program with message saying that I have to look in configuration file which one I can not understand - what I am doing wrong?

1701878522401.log (652.6 KB)

[ssimara]

I forgot to mention earlier: I tried with the previous version (5.1.2) and it works fine, but when I upgrade to version 5.2 from version 5.1.2, I got a similar message (my first post) … I’m using Windows 11.
Thanks for help
Stjepan

[ScottF]

Hi @ssimara -

Thanks for the log and description of the problem. I’ve asked internally to see what might be going on. Sorry for the trouble!

[ssimara]

Thanks Scott, I’m willy looking forward for solution! - hope it will be in reasonable time, I mean, 5.2 it seams like true step and I will like to be with in my work as soon as possible!

[ScottF]

Hi @ssimara -

So based on what I heard back, it’s likely that this is a Java version problem. In your log, it shows

java.version=1.8.0_391

But KNIME ships with its own version of Java, which is specified in the knime.ini file:

-vm
plugins/org.knime.binary.jre.win32.x86_64_17.0.5.20221116/jre/bin/server/jvm.dll

Can you check your knime.ini file to make sure that it matches the above? You might also try upgrading the pre-existing Java version itself.

[ssimara]

@ScottF

plugins/org.knime.bi

Thanks Scott, here is -vm line in my ini file:
-vm
plugins/org.knime.binary.jre.win32.x86_64_17.0.5.20221116/jre/bin/server/jvm.dll
…
Question: which version of JRE do I need then? … as far as I know, I already have the latest version of JRE, I mean: 1.8.0_391 (as Java Control Panel say to me on my update tab) … should I then uninstall java machine first and then install new version of Knime?

[ScottF]

I would try uninstalling the conflicting version first. Can you give that a shot and report back?

[ssimara]

Hi Scott, thanks for response. I did try next steps - I do not know if is a kind of solution probably - but it works for me know:

1. uninstalling JRE first
2. install fresh KNIME copy but then I get following message:
   
3. I reinstalll JRE again but than very known error is coming back whan I try to lounch KNIME app, said: I have to see log file in configuration folder which I already send to you earlier …
4. deinstalling JRE again …
5. create new Path variable in my Windows Environmental variables point to javaw.exe in KNIME plugin folder …
6. deinstalling and than reinstall fresh KNIME copy …
7. Launch KNIME and now everything looks fine!!

So, my question is: why I can not have JRE platform install onside together with JRE which came with KNIME installation? and why is that in my case KNIME installation procedure can not recognized his own path to javaw.exe file - I need to manually create environment variable path first?

[ScottF]

Glad you were able to get there! As for the details of why it worked, I’d need to ask internally again and find a Java expert. Sorry I’m not more immediately helpful.

[mbloechle]

Same problem here. I used a fresh user install (tried both options, only for me and with admin rights) of Knime 5.2 installer on Windows 11. I don’t have any extra jre/jdk installs. I also verified the jre.dll path is correct in knime.ini.

Previous Knime 5.1.2 installer works fine. Any ideas? Thank you!

[takbb]

Hi @mbloechle ,

If you navigate in Windows Explorer to the

c:\users\mb\Local\Programs\KNIME\jre\bin

folder do you see the javaw.exe file there?

Is that folder actually present?

if you open a command prompt in Windows and type in the command:

where javaw

what result does it return?

I see you have VS code on the path. What do you see if you type:

where code

[mbloechle]

Hi @takbb, there is no such jre Folder in C:\Users\mb\AppData\Local\Programs\KNIME

Thank you!

Best regards, Max

[mbloechle]

Hi, any ideas or update on this @ScottF? Thank you!

[ScottF]

Hi @mbloechle -

What does the -vm line in your knime.ini look like, and does a matching JRE exist at that location?

[mbloechle]

Hi @ScottF, thanks. The line points to an existing jvm.dll with 12234 KB (when I change the forward slashes to backward slashes).

Since this is a vanilla install using the installer, I would assume this to be correct. Is there anything else I can check? The knime.log does not contain anything recent.

-vm
plugins/org.knime.binary.jre.win32.x86_64_17.0.5.20221116/jre/bin/server/jvm.dll

[mbloechle]

So after checking other issues I now manually installed openJDK JRE (openJDK17U-jre_x64_windows_hotspot_17.0.10_7.msi) and changed the knime.ini accordingly (-vm
C:/Program Files/Eclipse Adoptium/jre-17.0.10.7-hotspot/bin/server/jvm.dll) and it works.

More interestingly, Knime 5.2.2 now also works with the internal jre (change back to original knime.ini vm). However, I must not uninstall the Eclipse JRE. Perhaps the installation configures the path correctly (that should not be required)? I am guessing only, perhaps @wiswedel you have an idea since you fixed a similar issue before? Thank you!

Failed to load JNI shared library; jvm.dll

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A java Runtime Environment (JRE) or JDK must be available in order to run Knime

Updated from previous version to KNIME 5.2 from notification given by KNIME software. When trying to start KNIME after version update I get error message: A Java Runtime Environment (JRE) or Java Development Kit (JDK) must be available in order to run Knime. No Java virtual machine was found after searching the following locations: javaw.exe in your current PATH. I understand Java should install bundled with KNIME package and have faced now issues with earlier KNIME versions. What should I …

[wiswedel]

I’m unable to explain the behavior. KNIME comes with an embedded java installation and should function independent of the OS java installation. I went back to the first post in this thread… which has a log file. Unfortunately it’s truncated, it says:
This is a continuation of log file ....1701878522401.bak_0.log.

Can you reproduce the problem and send all the log files from that directory?

[ssimara]

Sorry, I can not find any more the rest of log files - probably when I was start with completely new knime installation it somehow deleted.

[jnlamarre]

If you encounter such issue after the installation:

Here is a concise summary of the steps to follow to resolve the issue:

Step 1: Checking Java Installation
Attempt to verify Java installation using java -version in Command Prompt.
This shows that Java is not recognized, indicating it is not installed or not configured correctly.

Step 2: Installing Java
Download and install the Eclipse Temurin JDK (version 21.0.3) from the Adoptium website.
Use for instance the Windows installer package (.msi).

Step 3: Setting JAVA_HOME and Updating Path
1- Set the JAVA_HOME environment variable to the JDK installation directory.
For instance: C:\Program Files\Eclipse Adoptium\jdk-21.0.3.9-hotspot.
2- Update the system Path variable to include %JAVA_HOME%\bin.
This will ensure that the system could locate Java executables.

Step 4: Verifying Java Installation
Open a new Command Prompt window and verify the Java installation using java -version.
This will confirm that the correct version of the JDK is installed and recognized by the system.

Then, launch KNIME and enjoy!

[ssimara]

Thank you, jnlamarre, I will check later and let you know results.