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New updates released for Java 8, 11, 17, and 18 as of Apr 2022

New JVM updates have been released today (Apr 19, 2022) for the current long-term support (LTS) releases of Oracle Java, 8, 11, and 17, as well as the new interim update 18. (Note that prior to Java 9, releases of Java were known technically as 1.x, to 8 is referred to in resources below as 1.8.)

The new updates are 1.8.0_331, (aka 8u331), 11.0.15, 17.0.3, and 18.0.1 respectively). And as is generally the case with these Java updates, most of them have the same changes and fixes.

For more on them, including changes as well as the security and bug fixes they each contain, see the Oracle resources I list below, as well as some additional info I offer for if you may be skipping to this from a JVM update from before Apr 2021. I also offer info for Adobe ColdFusion users on where to find the updated Java versions, what JVM versions Adobe CF supports, and more.

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New updates released for Java 8, 11, and 17, as of Jan 2022

New JVM updates have been released last week (Jan 18, 2022) for the current long-term support (LTS) releases of Oracle Java, 8, 11, and 17. (Note that prior to Java 9, releases of Java were known technically as 1.x, to 8 is referred to in resources below as 1.8.) I'd shared the news in a tweet last week, but was delayed in getting this post out.

The new updates are 1.8.0_321, (aka 8u321), 11.0.14, and 17.0.2, respectively).

For more on them, including information on the security fixes and bug fixes they each contain, see the Oracle resources I list below, as well as some additional info I offer for if you may be skipping to this from a JVM update from before Apr 2021, as well as info for Adobe ColdFusion users on where to find the updated Java versions, what JVM versions Adobe CF supports, and more.

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New updates released for Java 8 and 11 (and 17), Oct 2021

New JVM updates have been released yesterday (Oct 19, 2021) for the current long-term support (LTS) releases of Oracle Java, 8, 11, and 17. (Note that prior to Java 9, releases of Java were known technically as 1.x, to 8 is referred to in resources below as 1.8.) While the news has been announced by Oracle and shared in the IT press, I know that some of my readers don't necessarily follow those sources closely.

The new updates are 1.8.0_311, (aka 8u311), 11.0.13, and 17.0.1, respectively).

For more on them, including information on the security fixes and bug fixes they each contain, see the Oracle resources I list below, as well as some additional info I offer for if you may be skipping to this from a JVM update from before Apr 2021, as well as info for Adobe ColdFusion users on where to find the updated Java versions, what JVM versions Adobe CF supports, and more.

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Lots more to the current CF2021, 2018 prerelease than folks may realize

Have you checked out the many things coming in the updates for CF2021 and 2018 in prerelease the past few weeks? Anyone is welcome to join the prerelease, logging in with an Adobe account. It's a lot more substantial than I think most realize.

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New updates released for Java 8 and 11, April 20 2021

For those using the Long-term Support (LTS) versions of Oracle Java, 8 and 11, please note `there were new updates released last week (Apr 20), specifically Java 11.0.11 and 8.0_291. For some, that's all they need to hear. They will take that ball and run with it.

For most, you should read on, especially about an important change regarding TLS support (and calling out to servers not yet running TLS 1.2 or above). I cover that and other important topics:

  • What's in the JVM update, do you need to update to it?
  • A key change in this Java update: calls out to TLS 1.1 or 1.0 no longer allowed, by default
  • Re-enabling support for calling out to old TLS versions
  • Groundhog day: you'll need do make this java.security file change on any later JVM updates
  • Should you update to the new JVM version?
  • The importance of testing such updates/changes
  • More questions you may surely have, and finding answers to them
  • Obtaining the updated Java installers

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Confirming ColdFusion's Java version via CFML code

Have you ever wished you could confirm with 100% certainty what Java version is in use by the CF instance you are running? Or where the JVM's location is (in case you are told to modify files related to it)?

Some good news is that ColdFusion offers simple ways/variables that can show you each of these, via CFML code. In this post, I share that. I share first a simple single variable which works in CF2018 and above, then I offer a variation for those on CF2016 and earlier, as well as variations for Lucee.

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New updates released for Java 8 and 11, Oct 2020

For those using the Long-term support (LTS) versions of Oracle Java, 8 and 11, please note that there were new updates released last week (Oct 20), specifically Java 11.0.9 and 8.0_271. For more on each, see the:

For some, that's all they need to hear.

And I could (and probably should) leave it at that. But there are other questions which folks will have, including more on getting those binaries/installers (from Oracle or Adobe), on the difference between those LTS versions and "more recent" Java versions, as well as non-Oracle JVMs, and on licensing matters and more. For those, read on. Perhaps I will split this other stuff out into its own post at some point, so I can just point to it from news of these Java updates.

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Solving metaspace errors, once and for all

I have a really simple solution to offer here, for a problem that has been nagging people running ColdFusion for the past few years. (I've also just filed a bug report asking Adobe to address this.) This post may also benefit those NOT running CF, especially if they have found confusing/conflicting information about the Java metaspace error and jvm argument that relates to it.

Perhaps you're getting errors referring to "metaspace" or "OutOfMemoryError: Metaspace", whether in your web sites, error logs, or even the CF Admin, and you wonder "what to do". Or you may be getting odd occurrences of blank pages, and if you look in your coldfusion-error.log you are finding such metaspace errors.

TLDR; In all these cases, the solution is simple (and may seem contrarian to some ears): REMOVE the maxmetaspace element from your JVM arguments. Indeed, I would go so far as to say everyone should simply remove it, even BEFORE you may get errors.

In the post that follows, I will explain how to remove it, including how you need to be VERY careful when doing that. You may also wonder why I recommend removing it, versus raising it. I cover that, as well as that bug report, below.

Update: I also created an abbreviated version of this post, on the Adobe CF portal, if that may interest some readers.

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New Oracle JVM update released, July 16 2019

Just a heads-up for folks using CF, Lucee, and other Java-based apps and app servers: Oracle has released today a new JVM update, for Java 8 and 11. It's update 221 for Java 8 (1.8.0_221), and update 4 for Java 11 (11.0.4).

For some, that's all they need to know. For most, they will probably want to read on.

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Top 10 CArehart.org blog posts of 2018

Note: This blog post is from 2019. 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.
Yep, I'm a bit late on this. :-) Here are what I might propose to be the top 10 posts of mine from 2018 (by my own choice, and in reverse chronological order):

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