Wednesday, October 8, 2014

IBM i Technology Refreshes: How do you know which one you have?

Beginning with IBM i version 7.1, IBM has been issuing Technology Refreshes (for example, TR11 for the eleventh refresh). These are different from any other update method previously used by IBM for the i and its predecessors: the iSeries, System i or the AS/400. For some reason, they do not use the modification part of the version for this; all Technology Refresh levels remain at modification level zero (e.g. V7R1M0).

So if you have an IBM i running 7.1, how do you tell which is the latest TR that is installed on your system? Simply run the "Work with PTF Groups" command like this:


and look at the highest level installed. For 7.1, Level 11, released November 20, 2015, is the latest available with Level 12 coming soon. Here is a screen shot from an actual system showing Level 6 installed:

For a general introduction of Technology Refreshes for 7.1, 7.2 and 7.3, click here.

For the latest installed IBM i 7.2 Technology Refresh, use PTF SF99717. Level 5 was released November 11, 2016.

For the latest installed IBM i 7.3 Technology Refresh, use PTF SF99727. Level 1 was released November 11, 2016.

To install the latest TR, do not use the PTFs above. Use the PTFs in the IBM document in the link above. This document also shows you the marker PTFs you can look for.

Let me know through comments if you have any questions about this.

Updated May 23, 2015 to add information about Level 10 for 7.1 and Level 2 for 7.2.

Updated December 2, 2016 with the latest information.

Friday, September 5, 2014

IBM i: Updating DNS without Operational Assistant

There are no native ("green screen") commands to update DNS entries on the IBM i; you must use Operational Assistant. But, for older servers, this can be a problem. For example, I could not get Operational Assistant for V5R4 to load onto Windows 7. And Operational Assistant for V5R4 will not update DNS entries for V4R5. This tip shows you where the DNS entries are stored on the IBM i server so that you can update them yourself.

I'm going to use for my examples as it is a domain name reserved for examples!

For V4R5, the DNS entries for are stored in this file:


For V5R4, the DNS entries are stored here:


If you use the WRKLNK command, you can look at this file using option 5 or edit it with option 2. Here is an example from a server running V5R4:

 ************Beginning of data**************
;*************************** iSeries Navigator ****************************
;This file was written by iSeries Navigator on Jul 27, 2011
;*************************** iSeries Navigator ****************************


(The next two lines are actually one line in the file.) IN SOA ( 1165351125 10800 3600 604800 86400 )


pop IN A
smtp IN A
www IN A
falcon IN A
eagle IN A

;*************************** iSeries Navigator ****************************
;; Data from the "Other Records" page
;*************************** iSeries Navigator ****************************
 ************End of Data********************

This file is based on standard BIND format, although the spacing of the blanks is not the same. I'll explain what some of this data means but a full explanation is beyond the scope of this post.

Our example company has two IBM i servers, Eagle (at and Falcon (at Eagle is hosting the mail server, also referred to as, and The web site, which uses either a blank server name (i.e. or the regular name ( are hosted outside the firewall at IP address Keep in mind that you will need an entry for each possible system name as DNS will not look further if the name is not present in this table. The exception is the IBM i host table (CFGTCP option 10) which is either looked at first (*LOCAL) or second (*REMOTE), depending on the value in CFGTCP option 12.

This example company did not have a Windows server when this was set up. DNS was set up on both Eagle and Falcon for redundancy and their IP addresses loaded into the firewall as the name servers for DHCP connections. Of course, the reason for doing this is that the DNS entries for servers are different inside the firewall than they are outside. For example, Falcon's IP address outside the firewall might be and Eagle's could be

If you have not used Operational Assistant to set up DNS, I can't help you. This blog post is about changing entries, not setting up new entries. Let me know, through comments or email, if you have any questions.

Monday, September 1, 2014

New office at 3964 Montgomery Road, Norwood (Cincinnati), Ohio

After sign removal and painting. Taken Sept. 14, 2014.
Netburg Services has leased the office at 3964 Montgomery Road, Norwood, Ohio 45212-3720, beginning Sept. 1, 2014. This is located across the street from the United Dairy Farmers Corporate Headquarters and ice cream plant. As we are a small business, there won't be regular office hours so please call for an appointment (513-247-9701). Previous to leasing this office, we were a home-based business. Expect a new sign (instead of a lit blank sign to the left of the door) in November.

Before lease signed. Taken in Aug. 2014.
Courtesy of Google Street View. Taken Aug. 2012.
Updated to include additional pictures Sept. 15, 2014.

Thursday, June 26, 2014

Introducing the new Netburg Services website

As of today, we are converting the Netburg Services website to a blog. This will allow some static content as well as dynamic content in the form of blog entries.