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Why you should think twice about leaving on the "public JRE" option of the Java JDK installer

Note: This blog post is from 2016. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
This is a follow-up to a post I did in late 2014, CF911: 'Help! I've updated the JVM which ColdFusion uses, and now it won't start!'. In that post, I listed about a dozen common problems that befall people who try to update the JVM that CF is using (and it and this post apply as well to Lucee or BlueDragon, or indeed any Java application server).

In this post, I want to elaborate on one more common mistake. Well, mistake may be too strong word. It's about a default option when you run a Java JDK installer (see the other post for more on JDK vs JRE options).

In short, I make the case here for why you should NOT let the JDK installer implement its "public jre" option.

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How to solve common problems with applying ColdFusion updates (in 10 and above)

Note: This blog post is from 2016. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
While ColdFusion 10 and later releases add a new automated update installation mechanism, what do you do if the update doesn't work? The answer may be simple on the surface, but not obvious to most. (And you'll likely be in panic mode.)

Many find after applying a ColdFusion update that either CF won't start at all, or they can't access the ColdFusion Admin, or some part of CF or their app doesn't work. The problem may be simply that there was an error in the update process CF did, and it may be rather easily confirmed and resolved.

In this post, I share several tips and observations to help resolve this, based on my years of providing remote CF troubleshooting support.

The TLDR version:
  • Check the ColdFusion update log--not logs in the normal CF "logs" folder, but the update's "install" log, and a specific table of successes and errors there. More detail below.
  • And if there ARE errors, try stopping CF (and its related services) yourself, and then try the update again. Again, more below.
  • Finally, if that still fails, then manually apply the update from the command line. I share more on that below also.

If that's enough to get you going, great--especially if you ARE in panic mode! (If the "problem" you need to solve, instead, is that you can't get CF to show you updates because you're behind a firewall preventing outbound internet access, I help with that also, toward the end.)

For most people, though, even those "simple things to do" can prove challenging (and understandably so). And you may find different resources on the web offering perhaps truncated discussions of the topics, which is why I elaborate on things in this post.

And even if you're in a panic, it may take only about 10 minutes to read this whole post. (You can also hire me to help instead, of course. See the links above or below.) Hope the info to follow is helpful for you.

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The ColdFusion 'metrics log', an oft-missed or misunderstood feature, 'new' since CF10 (Part 1)

Note: This blog post is from 2016. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
I'd like to take a diversion from my recent posts focused on CF2016 and talk about something that applies (and should interest) anyone using CF 10, 11, or 2016.

Have you heard of the new "metrics log" option that was enabled in CF10? If you have not, it's worth knowing about (there's precious little documentation, and I'll point to it, and give you still more info to help you use it). It's a useful, low-impact mechanism to get some high-level metrics logged by CF every 60 seconds (by default), and stored along with other CF logs.

If you did know about it, you've probably had some problems with it. Why does it show "nulls"? What do reported metrics really mean? Why do they not jive with what I'd expect to be the numbers reported?

In this post, and a Part 2 to come, I will introduce the metrics log, pointing out some key things you need to know to have it setup to work at all, and then I'll share my observations of things I've come to understand about the reported metrics.

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ColdFusion 2016: Changes in the CF Administrator

Note: This blog post is from 2016. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
As folks continue to explore ColdFusion (2016 Release), aka CF2016, regarding what's new or changed, I thought I'd put together a listing of what has changed in the CF Admin specifically. This is another in a series of posts I started last week on CF2016.

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Tending the SQL Server garden: tuning and maintenance resources (updated and useful)

Note: This blog post is from 2016. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
Often in my role as an independent consultant providing ColdFusion server troubleshooting services, I find myself helping folks determine whether or that a problem is in their database.

And though it may surprise many, I generally do not find the problem to be very often with the SQL they are running. More often it's about configuration issues. For instance, it may be that they have not been keeping their indexes or statistics updated, or it may be that they need indexes that they don't have, or have too many that they don't really need. Or it may be that they have not done any tuning at all and the default settings for their database server are not be well suited to them.

And though such problems are common to any database server (MySQL, Oracle, PostgreSQL, and so on), I find that an awful lot of my clients (for whatever reason) do run on Windows and do use SQL Server (and that doesn't make them stupid or lazy. Different strokes for different folks).

So in this post I want to focus on some SQL Server resources, related to such matters, which I find that I refer folks to often. Some are blog posts, some are code you can run, and some are tools (mostly free).

People using other DBs would do well to read along and could find corresponding resources/tools for the same problems in their respective DB servers.

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Great set of substantial, practical, but brief videos on IIS

Note: This blog post is from 2016. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
This isn't "new" information, though it was new to me this week. I came across this excellent set of youtube videos, 50 substantial yet brief overviews of key IIS topics from IIS/.NET/Windows guru Scott Forsyth.

I offer the list of topic titles (and links to them) below, and have even created a YouTube playlist with them, but note that the links below go to pages that the author had created where he offered a helpful introduction to each video (more than appears in the Youtube description for each).

I had also wanted to offer here this brief overview of them, to set the context and encourage you to view them, so as not to dismiss them if other tech video series haven't impressed you. Whether you're new to IIS 7 or 8, or an old hat user, there really is something for everyone, including wonderful little tips he shares in passing during most videos (which average about 10-20 minutes each).

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Monitoring ColdFusion web server connectors, more on Tomcat 'Status Workers'

Note: This blog post is from 2015. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
If you're running CF 10 or above, there was a very interesting post on the Adobe CF blog, from July 19 2015, entitled, Configuring Status Worker in Connectors. The Adobe blog post title may not have caught your attention, but it's about setting up a lightweight and built-in Tomcat monitoring feature for observing the status of the Tomcat web server connector.

You may want to consider enabling it, but I would add some caveats and observations that I share below. Note that it's really quite easy to enable, and DOES NOT require a restart of CF (only of your web server, or technically in IIS, a recycling of the application pool/s--a web site restart is not enough) to take effect.

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See you at dev.Objective() in mid-May (I'll be speaking)

Note: This blog post is from 2015. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
Just wanted to share word (sorry it took so long) that I'd been selected as a speaker at the upcoming dev.Objective() conference, in Minneapolis in Mid-May. Hope to see lots of my fellow CFers there, and of course new folks who were not CFers.

While the conference name has changed (from cf.Objective()), there are still plenty of CF-oriented topics, and of course as nearly everyone would point out, it's good for everyone to expand their reach and focus.

To that end, I'll be doing a topic a bit different than my normal focus of CF server troubleshooting. Instead, recognizing that there will be folks there who either use other servers, or develop web apps or mobile apps, I'll do a bit of a "soft" topic on how to troubleshoot performance problems more generically, in:

Hey, my web app's slow. Where's the problem?

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CF911: Help, How do I connect sites to a new instance w/ the ColdFusion 10/11 webserver config tool?

Note: This blog post is from 2015. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
This one causes a lot of heartburn for folks: you add a new instance in CF10 or 11 (in editions other than Standard, which do support adding instances), and you find that you can't seem to have the web server configuration tool (wsconfig) connect sites to that new instance(s). You never see the new instance listed in the UI of the wsconfig tool. What gives?

The solution is relatively easy, and the problem could maybe be fixed (or at least warned about) by Adobe (and I just filed a bug report for it). Until that happens, I wanted to share this. For more, read on.

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Updates, updates. Get your CF updates! The CF Team has been busy fixin' bugs!

Note: This blog post is from 2015. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.
If you'd not noticed, the CF team has been busy fixin' bugs! Over 300 in CF11 in just the past month. Check out these two announcements today of prereleases of update 5 for CF11 and update 16 for CF10:

This is on top of the release earlier this week of the final version of CF11 Update 4 (which had been in prerelease for a couple of weeks):

Great to see the CF team cranking on the bug fixes. I count just under 120 in the technotes for CF11 update 5, and just under 40 in CF10 update 16. And there were just under 200 fixes in Update 3 of CF11, which again was released just in recent weeks.

Yeah, but what about all those bugs?

Yes, I know some could twist things and say "yeah, but the problem is that there are so many bugs to be fixed". Sure.

Still, for others who may have longed to see their bugs fixed,

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