IBM i PTF Guide Archives

IBM i PTF Guide, Volume 28, Number 10

March 9, 2026 Doug Bidwell

It was a super quiet week in IBM i Land this week. Seriously. Like, we have never seen it so quiet. No security vulnerabilities, no new PTF groups issued for any of the five supported IBM i releases. It has been very, very quiet indeed. So that probably means you need to brace yourself for a bunch of stuff in the next couple of weeks.

We did want to point out that there are massive price changes coming for Power Systems main memory, which were announced to business partners on March 2 and which take effect on April. (This is …
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IBM i PTF Guide, Volume 28, Number 9

March 2, 2026 Doug Bidwell

Welcome to March. You have five security vulnerabilities to take care of. The good news is that there is not a lot of other PTF stuff you have to worry about if you are on IBM i 7.3 through IBM i 7.6. There are Group HIPER and Group Security updates for IBM i 7.2, which is still under extended support.

Let’s go through the security vulnerabilities to start, as we usually do.

First, we have Security Bulletin: IBM Rational Developer for i is affected by a memory exhaustion loop (CVE-2024-4068), which you can read about here. (And for …
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IBM i PTF Guide, Volume 28, Number 8

February 23, 2026 Doug Bidwell

This week, we start with three security vulnerabilities and a warning about media issues when you put your external LTO drives too close to the running Power Systems iron in your rack.

Let’s start with the vulnerabilities, as we often do.

First, we have Security Bulletin: IBM i is affected by denial of service vulnerabilities in Db2 JSON Store Technology Preview [CVE-2025-66453], which you can read more about here. The fixes for this vulnerability are as follows:
```
IBM i Release	PTF Number(s)
7.4	SJ08547
7.3	SJ08546
7.2	SJ08545
```
Second, we have IBM i Java Development Kit 8 64 & …
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IBM i PTF Guide, Volume 28, Number 7

February 16, 2026 Doug Bidwell

First, we wish you all a happy belated Valentine’s Day, which we were thinking about because we put the IBM i PTF Guide together on Saturday.

Second, there is a new System Planning Tool, Version 6.26.041.0, which is available for download at this link. We also note that the link to the IBM Systems Workload Estimator and the link to the IBM Systems Energy Estimator no longer work and just take you to a generic IT Infrastructure page that is, how shall we say?, not particularly useful.

And third, we have Security Bulletin: IBM WebSphere Application Server could provide …
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IBM i PTF Guide, Volume 28, Number 6

February 9, 2026 Doug Bidwell

Here is something handy if you are contemplating moving to IBM i 7.6: A comparison of IBM i 7.5 to IBM i 7.6, from IBM Support and available at this link. If you are moving from releases earlier than IBM i 7.5 to IBM i 7.6, then you should definitely take a gander at this as well. We have added a link in the Guide tab “Links” for this should you need to get to it later and to keep it top of mind.

Here is the rundown of PTF Groups by IBM i release level since we last …
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IBM i PTF Guide, Volume 28, Number 5

February 2, 2026 Doug Bidwell

This week there’s another winter storm whacking the eastern half of the United States, and we are also putting together the IBM i PTF Guide a little early in case some of the people working on The Four Hundred lose power. If all goes well, and you are reading this on Monday, then we got it all done before anything bad happened.

This week, we start off with two security vulnerabilities.

First, we have Security Bulletin: Multiple Vulnerabilities in IBM Java SDK affect IBM WebSphere Application Server and WebSphere Application Server Liberty due to the January 2026 CPU, which you …
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IBM i PTF Guide, Volume 28, Number 4

January 26, 2026 Doug Bidwell

Big Blue is changing its IP addresses for important stuff once again, and that makes this change a High Impact/Pervasive or HIPER issue for IBM i shops. So, customers have to prepare firewalls and proxies for the upcoming infrastructure changes on IBM Fix Central system, which you can read about more at this link. Public internet IP address are changing for the IBM servers that support internet delivery of fixes and updates for customer system’s software, hardware, and operating system. Hostnames are not changing. IBM will complete the implementation of the infrastructure improvements to electronic fix distribution by March …
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IBM i PTF Guide, Volume 28, Numbers 1 Through 3

January 19, 2026 Doug Bidwell

We are determined to get you all caught up on the happenings with PTF patches and such that have happened so far in the new year after getting you caught up with what happened at the end of 2025 in last week’s issue.

So, without further ado, here are the first three editions of the IBM i PTF Guide for 2026, which will end our “Ketchup” Weeks until the next holiday rolls along. (Technically, it is Martin Luther King day in America as we go to press, which is a holiday for many but not for all.)

We will start …
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IBM i PTF Guide, Volume 27, Number 48

December 8, 2025 Doug Bidwell

If you are using WebSphere Application Server Liberty along with Java SE 8, you just got a new lease on life for this combination. IBM had been planning to make Liberty 26.0.0.9 the final release that supported Java SE 8, with interim fixes available through September. Now, as you can see in this announcement, now Liberty will support Java SE 8 up through the 28.0.0.12 release and interim fixes through December 31, 2030.

IBM says that this change was done to give customers more than two more years to upgrade to more recent and modern versions of Java. Liberty …
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IBM i PTF Guide, Volume 27, Number 47

December 1, 2025 Doug Bidwell

We start this week with performance anxiety. Well, more like performance degradation. As you will see at this link, if you have installed IBM i 7.4 TR12 or IBM i 7.5 TR7, SQL query plans might be spending more time waiting for I/O pending faults and therefore are performing poorly. There are actually two different but related issues and two different fixes that resolve this issue.

This week, there is also a security vulnerability. See Security Bulletin: IBM i is affected by obtaining information without proper authority [CVE-2025-36371], with more information available here. The fixes for this vulnerability, …
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