version - updating java software require any downtime of the application -


i'm not sure whether can post question here or not. have application deployed tomcat server , application running fine. if have upgrade java version, stop application? in other words need downtime upgrading java version?

now if have upgrade java version, stop application until upgrade completed?

that advisable.

you install newer version of java existing 1 being used run application. however, need restart tomcat , application them start using newly installed jre.

do need downtime upgrading java version?

you need some down time.

however, @andreas says in comment, if design system(s) appropriately, may able implement system live server , "hot" stand-by server, , use load-balancer or haproxy "fail over" 1 system other enough interruption short notice. alternatively, if have multiple "live" instances of server can take instances out of service, upgrade them , reintroduce them.


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