Wowza provides it's own optimised java binaries, however it might use system java if installed which can degrade performance and even cause crashes.
You can search for other versions of java by running rpm -qa java
You can remove typical packages that cause issues by running the below commands:
CentOS: yum remove java java-11-openjdk java-1.8.0-openjdk-headless;
Debian: sudo apt-get remove openjdk*;
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