Upgrading Java for all Talend services on Windows

You can upgrade Java to avoid security issues. This procedure will go through the different steps required for minor or major updates of Java on Talend services. It can also be followed for minor downgrades.

Before you begin

Download and extract the update_java.zip file. Use the .bat file or the .sh file depending on your operating system.
Download the sed.zip archive only if there is no such file in the utils folder in the Talend home folder.

About this task

This procedure applies to all Talend services, except Talend Remote Engine. See section Upgrading Java for Talend Remote Engine for more details.

Restriction: Talend LogServer (deprecated), Talend MDM, and Nexus do not support Java 17. Nexus does not support Java 11.

Procedure

Place the update_java.bat file in the utils folder in the Talend home folder.
If you downloaded the sed.zip from the Downloads tab, place it in the utils folder.
Install the new Java version according to the Compatible Java environments page.
In Windows search tab, type in services.msc and open the Microsoft Management Console application.
Look for the list of Talend services, right-click each of them and select Stop.
The last services to be stopped should be Talend Administration Center, Talend Identity and Access Management, then Kafka, ZooKeeper, and MongoDB.
Go to System Properties > Advanced > Environments Variables.
Update the JAVA_HOME environment variable and the PATH variable:
1. Under System Variables, click New... to create a variable. Name the variable JAVA_HOME, enter the path to your Java environment, and click OK.
1. Under System Variables, select the Path variable, click Edit... and add the following variable at the end of the Path variable value: ;%JAVA_HOME%\bin
Open the command prompt application.
Type in echo %JAVA_HOME% and press Enter. The value displayed is the new value set.
Open update_java.bat with a text editor.
Locate the variables in the script and set them as follows:

"TALEND_HOME=C:\<Talend_home_folder>" (for example: set "TALEND_HOME=C:\Talend\8.0.1")

"PROD_VER=<Talend_version>" (for example: set "PROD_VER=8.0.1")
Add --add-opens=java.base/java.lang=ALL-UNNAMED in the setenv.bat file, if you have not yet this configuration.
Then run the following command as administrator to start Talend Administration Center service:
```
cd C:\Talend\8.0.1\tac\apache-tomcat\bin
tomcat9.exe //US//talend-tac-8.0.1 ++JvmOptions="--add-opens=java.base/java.lang=ALL-UNNAMED
```
As a superuser, run update_java.bat . This script will replace the hard-coded path to Java with the new values in your installation.
Restart your computer or start all Talend services manually from the service.msc application.

Results

All Talend services are now using the new Java version.

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