• Stop Pro.Monitor service
• You can use the latest JAVA OpenJDK GA version (minimum 11) available here: https://jdk.java.net/
• Download the windows/x64 archive from the build section and unzip it in your usual Java install path: C:\Program Files\Java
• Add the path to the JAVA bin folder within your global system Path variable (Example: C:\Program Files\Java\openJdk_12\bin)
• Set JRE_HOME environment variable to the JAVA installation folder
• Open a shell and execute java –version you should see a similar screen, mentioning 64-Bit Server VM

• Download the OpenSdk Archive and expand it.
• Uninstall former versions of JAVA
• Remove folder C:\ProgramData\Oracle
• Set PATH and JRE_HOME environement variables

Need to troubleshoot: Installation problems

• Use the existing package installer (apt or yum for example) to install latest GA version of JAVA OpenJDK (minimum 11)
• Example on CentOS:

> yum install java-latest-openjdk-headless.x86_64   # Installs the latest OpenJDK binaries
> alternatives --config java                        # In case of upgrade: Switches the links to point to the new version
> java -version                                     # Check you run the latest version

• Or download the Linux/x64 archive from https://jdk.java.net/ and decompress it in your usual Java install path and update /usr/bin/java link
• Refer to the online documentation specific to your Linux distribution

Warning:

• Avoid installing version 151 and 161 of Java 8, it has known issues preventing to use compression between server and browsers