How to set the JAVA_HOME environment in ADF for an Azure Function

Shabash, Boris 20

I'm writing an Azure Function in Python which connects to an IBM informix database. I'm using jaydebeapi as the connection library, and connecting using JDBC. However, when I run the connection code

conn = jaydebeapi.connect(...)

The error I get is No JVM shared library file (libjvm.so) found. Try setting up the JAVA_HOME environment variable properly.

My suspicion is that I need to set the JAVA_HOME variable for the function, but I have no idea how to do so for an Azure Function in ADF, nor where the directory should point to. How would I go about this?

Please don't reply with answers about the ADF linked service to Informix, I know about it, I don't want it, I need to do this via an Azure Functions for reasons.

1 answer

Arjun Karthikeyan S 155 Reputation points

2024-03-13T03:07:31.84+00:00
Hi Shabash, Boris

Good day,

To set the "JAVA_HOME" environment variable, login to portal.azure.com and follow the below steps,

Navigate to your Azure Function's resource.

In the left-hand menu, navigate to Configuration under settings.

Under Application settings, Click on "New Application Setting".

Set the name field as "JAVA_HOME" and value field to the path of your Java installation directory and click on save.

Once you have saved the changes, restart your Azure Functions.

Thank you.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have an extra question about the answer, please click "Comment".
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Shabash, Boris 20 Reputation points

2024-03-13T03:25:42.7066667+00:00

Thank you!
This partially helps me, but then how would I go about installing Java for an Azure Function?

Shabash, Boris 20 Reputation points

2024-03-13T03:26:32.9533333+00:00

Thank you! But how do I go about installing Java for my Azure Function?

Arjun Karthikeyan S 155 Reputation points

2024-03-13T03:53:08.4833333+00:00

Shabash, Boris May I know the environment that you are using for Azure Functions

Shabash, Boris 20 Reputation points

2024-03-13T04:34:14.4733333+00:00

On my own machine I am using Windows, and VSCode
When I look at the overview of the function app, it says Linux for the Operating System. Is there a way to connect to the server where the function app is on and install JDK there?

Arjun Karthikeyan S 155 Reputation points

2024-03-13T08:36:05.75+00:00

Shabash, Boris

For windows,

Download and install JDK from Oracle website.

Once you have installed the JDK, Right click on "This PC" and click on "Properties".

Then click on Advanced Properties.

In the system properties, you will find "Environment Variables" click that.

Under the "System variables" section, click on "New..." and add a new variable with:

Variable name: JAVA_HOME

Variable value: The path to your JDK installation directory (e.g., C:\Program Files\Java\jdk1.8.0_311).

Then update the path variable.

Additionally, you may want to add %JAVA_HOME%\bin to your PATH environment variable so that you can run Java commands from any command prompt.

Find the Path variable under "System variables" in the same Environment Variables window.

Edit the Path variable and add %JAVA_HOME%\bin to the list of paths.

Click "OK" to save the changes.

Now, you can continue developing your Azure Function in Visual Studio Code. If you have any queries on this. Pls "Comment", will be happy to help anytime.

Shabash, Boris 20 Reputation points

2024-03-13T17:24:54.1366667+00:00

So this will install JDK on my local environment, and as the Azure function is deployed this will bring that installation requirement to the Function App?

Arjun Karthikeyan S 155 Reputation points

2024-03-14T02:45:38.8333333+00:00

Shabash, Boris Yeah, Since you are using windows and Vs Code for Azure. Vs code will automatically take the environment variable which you would have set using the above mentioned steps. If there is any further more queries, pls "Comment" will be happy to help anytime. If the answer is helpful, pls click on "Accept Answer" and kindly upvote it. Thank you.
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How to set the JAVA_HOME environment in ADF for an Azure Function

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