[Looking for Charlie's main web site?]

CF911: 'Help! I've updated the JVM which ColdFusion uses, and now it won't start!'

Has this happened to you?
  • You wanted to update the JVM which CF uses to use a new version
  • so you found some resource on the web showing how to update, and it seemed simple enough
  • and then you tried restarting CF and wham, it won't start
  • and now you're stuck wondering, "what happened? and how am I supposed to fix this?"

It's a tragic position to be in, of course.

There are several reasons why your attempt to update CF's JVM can fail.

And fortunately I can offer several things you can consider/look at, some of which may quickly recover from or be able to undo (depends on what you did). And all this applies to Lucee, Railo, and BlueDragon as well, though folder locations will differ.

In brief, here are the things you may have done wrong. See below for solutions or recommendations:

  1. You may have told the Java installer to install itself WITHIN the CF directory. You should not do that.
  2. You may have gotten the wrong kind of Java installer
  3. You may have gotten the wrong bit-level of Java for your bit-level of CF
  4. You may have gotten the wrong JVM for your OS
  5. You may have tried to use a JVM not supported by the version of CF you're running
  6. You may have pointed CF to the wrong JVM location
  7. You may have updated the JVM config for the cfusion instance, but not your other instances
  8. You may have forgotten to change the path's directory separator slashes on Windows
  9. You may have to copy the msvcr100.dll from the JVM's lib to CF's when updating older CF's to Java 7+
  10. You may have to copy the tools.jar from the JVM's lib to CF's when updating older CF's to Java 8+ (and delete some files compiled for the old JVM)
  11. You may find that Solr integration (and/or PDFG in CF11+) stops working, because you didn't realize you needed to edit *its* jvm config file

While I'm at it, I also cover:

  • Why you'll find that CF can't even STOP (let alone START) if you make a mistake with the JVM configuration
  • What JVM version(s) are supported by what versions of CF
  • Dealing with SSL Certificates you may have imported into a previous JVM
  • Beware leaving the Java installer to choose the "public jre" option

So this really became quite a compendium of resources on changing the JVM CF uses, but again the focus is on why CF may not start if you make certain very common mistakes.

[....Continue Reading....]

My reply to: 'The price for CF troubleshooting consultants is a joke. They're taking us for a ride'

Ok, so that's clearly not my sentiment but rather that of a certain "Simon" (no other identifying info offered) in a blog comment in one of the recent CF team blog entries.

After complaining about how poorly he felt CF had responded to his seeking help, he threw in additionally that "the existing private consultants prices are a total joke - they are taking us for a ride!".

Well, I just couldn't let go his comment go unremarked.

I started to write my reply there, but it grew long (as is my wont). So rather than post there (where most comments are brief), I decided to post it here instead and point to it there. Perhaps some of my readers here may appreciate it as well, as I also talk about some thoughts on CF troubleshooting in general.

[....Continue Reading....]

Hidden Gem: Importing CF Admin settings in ANY release via 'import wizard', even AFTER installation

Have you ever faced the challenge of needing to migrate the CF Admin settings (datasources, mappings, scheduled tasks, etc.) from one machine to another, and from one CF version to a newer one? Did you know that there is an "import wizard" that you can (with proper configuration) run at any time to import settings from one release to another?

Before I discuss that, you may know of a couple of other solutions for this challenge: the CF admin ColdFusion Archive/CAR mechanism, available in some but not all editions (more below), and this same "import wizard" which runs at the end of CF installation, importing settings from an older CF version if found on the same box.

But what if either of those solutions don't work for you, and you have dozens of dsn's, scheduled tasks, mappings, or other settings you want to get from one machine/version to another?

You are NOT stuck having to manually copy settings from one screen to another! (And you should be very careful about the common hack solution of copying neo*.xml files from one instance to another, which may not always work and may break things.)

In this entry I'll discuss how you CAN indeed import the CF admin settings from nearly ANY release of CF into nearly ANY OTHER release of CF, in a fully supported way, and which CAN be done even after installation of a new CF release. (I say "nearly", because I worked with someone wanting to do this import of CF7 settings into CF10, and that large a jump was was not supported.)

I'll also mention an important potential gotcha to beware, as well as how to to get around that.

[....Continue Reading....]

Hidden Gem in ColdFusion 11: ColdFusion Archive (CAR) support now in Standard

Here's a nice surprise for some about a change in CF11: you can now create and read CAR files (ColdFusion archive files, a CF Admin feature) in the STANDARD edition of ColdFusion 11. In prior releases, it was available only in ColdFusion Enterprise.

Read on for more, including a gotcha regarding importing from previous release Standard editions, but for many this news will be a delight and all they need to know.

For more on what the CAR mechanism is, finding more on it, the gotcha (and what NOT to do if you hit that gotcha), and info on still more hidden gems in CF, read on.

[....Continue Reading....]

Get a headstart on checking out Update 3 for ColdFusion 11

If you didn't catch it, Adobe has come out with a prerelease version of the pending Update 3 for ColdFusion 11, which (like update 14 for CF10) adds many things:
  • bug fixes (over 160)
  • support for new OS's, databases, application servers, and web servers
  • support for Java 8
  • as well as updates to underlying technologies like Tomcat (now 7.0.54)

Update: Adobe released yet another version of this Update 3 prerelease, on Nov 19. See the blog entry for more about that, but the info below still stands and you will want to keep reading here if applying update 3 for the first time (indeed, even after the update comes in "final" form). That said, do see the updated blog entry (or more specifically the link to PDFs offered there) for more on what is in that newer version of the update.

For more on this update, read on here.

[....Continue Reading....]

Find ColdFusion installers, updaters, hotfixes, and docs for all recent releases at CFMLRepo.com

This won't be new info for some, but many folks remain confused by the fact, that after Adobe released ColdFusion 11 2018, they can seem to only find ColdFusion 11 2018 installers on the Adobe site. What if you need installers for 2016, 11, 10, or 9, or 8, and so on?

(Update: I wrote this post originally after CF11 came out, but it applies as well and still now that CF2018 has come out, so I have changed the references to that from here on.)

Find CF installers, updaters, and docs for past several releases

The good news is that if one wants to find ANY installers for most ANY version of CF, they can be found on an external repository setup by Gavin Pickin (and added to by myself and others, to include updates, hotfixes, and docs):

Gavin Pickin's CFML Repo

The name, CFMLRepo, may confuse some if they presume it's a repo of CFML. It's not. What it is is that originally it did originally have only CF installers (and updates, etc.) but then some contributed installers for Lucee and such, so he chose the more "generic" name.

(There used to be a longer and hard-to-remember URL, when I posted this originally in 2014, and I had created a shortened url, http://bit.ly/cfdownloads. It's now not "shorter", so I leave this here for posterity.)

Thanks so much to Gavin for creating the repo, and to him and others for maintaining it. Let's hope it remains a viable solution to find downloads for years to come.

New updates for Coldfusion 11, 10, and 9 (security update for 9, 11; still more for 10)

If you'd not heard the news, there were several updates released today, for CF 11, 10, and 9.

As for CF11 and CF9, it's mainly a security update. For CF10, it's got quite a bit more. (And there is another update for CF11 to come in the future which Adobe mentioned when it came out with its first update last month.)

For more on each, see below.

[....Continue Reading....]

My New Youtube Video on the Why and How of Using FR Stack Traces for ColdFusion Troubleshooting

As many of my readers know, I'm a big fan of the FusionReactor server monitor for ColdFusion (and Railo, BlueDragon, Tomcat, and indeed any Java server). I help people use it every day (just like I also help people leverage other CF monitors like the CF Enterprise Server Monitor and SeeFusion).

One of the most important features is the stack tracing feature, used to understand what's holding up a long-running request.

[....Continue Reading....]

My presentations at ColdFusion Summit, CFCamp, etc.

I wanted to share word here of the presentations I'll be offering at the upcoming Adobe ColdFusion Summit 2014 in Vegas on Oct 16-17, as well as CFCamp 2014 in Munich on Oct 20-21.

Also, sorry for the long delay in blogging. Just been so busy doing my CF server troubleshooting consulting.

As for my sessions at CFSummit (next week), I'll be doing the following (and you can follow the links to learn more about the talks, their dates and times, etc.):

At CFCamp, the following week, I'll be offering:

I had also presented the Hidden Gems talk at NCDevCon 2014.

These are all great conferences, and, in addition to cf.Objective 2014 (where I spoke also, on different topics), they are each great ways to keep up on what's going on in the world of ColdFusion and related technologies.

Finally, if someday you're visiting this blog entry and find that one of the conference links no longer work, you can find my own link to all my presentations, at all conferences the past 15+ years (as well as to any recordings made available) at my presentations page.

Come say hello if you're at any of these events.

CF911: High CPU in ColdFusion? Some common but perhaps unexpected causes

I often help people who are reporting that CF is "running hot on the CPU", maybe reaching 80 or even 100% of the CPU, whether in spikes or for extended periods. What might you propose people look at, when you've heard that? I've heard all kinds of things over the years, often focused on coding, or perhaps jvm tuning.

But as is often the case in a lot of the CF server troubleshooting consulting I do, I find the causes to be far less often what most people seem to suspect. So what would I look for when someone reported high CPU in ColdFusion (or Railo)? Read on.

[....Continue Reading....]

More Entries

Copyright ©2018 Charlie Arehart
Carehart Logo
BlogCFC was created by Raymond Camden. This blog is running version 5.005.
(Want to validate the html in this page?)

Managed Hosting Services provided by
Managed Dedicated Hosting