PSA - if you've been unable to install or run RTMT

We noticed something a few weeks ago about RTMT. We went to install it just according to Cisco’s normal instructions and… it doesn’t work! It sounds impossible but no matter how many times we tried, the RTMT installer just quietly died and did nothing. No error message, no clues, no logs.

If you’ve had this problem too I’m guessing your machine is probably like ours — somewhat up to date, running a somewhat recent version of Java. However.… it turns out the RTMT installer will only run if you are running Oracle Java SE 15 or *older*.

So anyway, here’s how to fix it.

1. First you have to uninstall whatever ​‘too new’ version of Java you have. NOTE: if you need Java for something else on this box, think carefully before proceeding (and maybe don’t proceed).
2. In the Windows Search bar, search for ​“uninstall” and then click ​“Add or remove programs”
3. In the little ​“search apps” textbox, type ​“java”. You should see one or more items for different versions of Java.
4. Uninstall all of the Java SE Development Kit items.
5. Next, go to the Oracle Java Archive website at https://​www​.ora​cle​.com/​j​a​va/te…
6. Scroll down until you see the link that says ​“Java SE 15” and click that one exactly. Again, do NOT get the latest one. (You can go older than Java 15 if you want to. As of this writing it seems that with the RTMT installer you get from CUCM v14, that you can go at least as far back as ​“Java SE 8 8u202”. But stick with Java SE 15 unless you have some reason to go older.)
7. Run that installer to install Java SE 15. 
8. Now right-click the RTMT installer that you got from your CUCM instance, and select ​“Run as administrator”.
9. The RTMT installer should run fine now.

Wait, why is Sideview playing with RTMT?

Well, you can never have too much insight, right? Our Cisco CDR Reporting and Analytics app gives customers a massive visibility upgrade, all from ​“just” the CDR. 300+ fields are available out of the box for on the fly troubleshooting, reporting and monitoring. Once you set up the ​“Sites” lookup, configure the free Active Directory integration, and maybe add our (paid) AXL addon, you have 500+ fields. Names, departments, buildings, hardphone models. 

But what if we added more? We’re looking to also get RTMT data folded into some key reports and pages. For example on the dashboard for this critical hardphone, show me its exact state and if I leave it up on my monitor, make it update in realtime.

As always, if this gives you an idea or brings up a question, we’d love to hear from you!