Oracle acquired and then supported Hudson Continuous Integration through 2016. Oracle no longer updates or supports Hudson. It was available free and open source under an MIT license, but it is no longer being developed, and is no longer available.
Oracle CI in terms of setup lags behind all above products, but then its use is also limited to release management so we can't really compare. Majority of organizations have dedicated team to help with CI Process so they take care of managing all jobs and setup.
Though it has a few setup issues, once you are done with setup it works like charm so one time setup issues won't bother. Reporting, version tracking, debugging everything is helpful and more clear and it reduces effort, in our scenario our QA team integrated their script with Hudson so that after every release it will get triggered automatically and developers will know if there is any major issue.
The setup needs to be more user friendly, currently for first time users CI doesn't provide more guidelines.
JMeter tool can be integrated but it's not easy, user has to follow and do research before setup. A simpler way would help make the process more user friendly.
Selenium tool like JMeter can be integrated, if its Webservice it's easy but for UI automation integration not enough information is provided.
Oracle CI in terms of setup lags behind all above products, but then its use is also limited to release management so we can't really compare. Majority of organizations have dedicated team to help with CI Process so they take care of managing all jobs and setup.