What is IBM i PTF: A Real Admin Guide

If you manage an IBM i environment, you know that keeping your system stable isn’t just a “good idea”—it’s a necessity. Whether your IBM i system runs critical business apps or backend services, keeping your system patched and reliable is non-negotiable. That’s where PTFs come in — and if you’ve ever hesitated before installing one, this guide walks you through the purpose, types, how to install them, and how A/B sides and IPL (Initial Program Load) matter.

What Exactly is an IBM i PTF?

PTF stands for Program Temporary Fix — a bundle of fixes, updates, or enhancements IBM distributes for IBM i. While “temporary fix” sounds minor, modern PTFs do much more than fix tiny bugs — they include technology refreshes, security updates, cumulative OS patches, and most PTFs become a permanent part of your system once you verify they work correctly.

What Does a PTF Do

• Fixes bugs reported by users or IBM.
• Patches security vulnerabilities.
• Updates OS functions and tools.
• Delivers new technology updates via Technology Refresh (TR) PTFs.
• Some PTFs also improve performance or hardware support.

Types of PTFs

Not all PTFs are created equal. Knowing which one you’re looking at helps you prioritize your maintenance. IBM i PTFs come in several flavors:

• Individual PTFs – Fix specific issues (e.g., a bug in a program or subsystem). You can load and apply them one by one.
• Group PTFs – A collection of related PTFs — such as all database fixes, HIPER fixes (critical ones), HTTP group, etc.
  • HIPER PTFs: “High Impact Pervasive” fixes. These are critical patches for issues that could cause system crashes or data corruption.
  • Database Group PTFs: You get database enhancements released since your OS version’s general availability. They keep your data operations efficient.
  • Technical Refresh PTFs (TR) – These are not tiny bug fixes. They deliver new features and updates similar to a release upgrade but as a PTF package tied to your OS level.
• Cumulative (CUM) PTF Packages – You install these comprehensive bundles that include all fixes up to a certain point for the OS, Licensed Internal Code (LIC), and most programs. This includes:
  • All fixes from previous cumulative packages
  • Most recent group PTFs (including database and HIPER)
  • Often the best way to get “most current” status
  • Only the latest cumulative package needs to be installed; earlier ones stack into it.

Choose the type based on your needs—individuals for quick hits, groups for themed updates, and cumulatives for broad coverage.

PTF Purpose & When to Install

Each PTF has a purpose:

Type	Purpose
HIPER	Critical, pervasive fixes
Pre-requisite	Needed before another PTF
Co-requisite	Applies together with another PTF
Delayed	Applied after IPL
Immediate	Can apply now without IPL

Always read the cover letter with a PTF — it tells you if an IPL is required, if there’s additional action required, or if you need to plan downtime.

How to Order IBM i PTFs

1. You start by ordering PTFs electronically—it’s fast and straightforward. Use these commands:
   • For individual PTFs: Run SNDPTFORD PTFID(nnnnnnn), replacing nnnnnnn with the PTF number. You can order up to 20 at once.
   • For cumulative packages: Execute SNDPTFORD PTFID(SF99VRM), where VRM matches your version (e.g., SF99750 for V7R5).
   • For Preventive Service Planning (PSP) info: Use SNDPTFORD PTFID(SF98VRM) (e.g., SF98750).
   • You automate this with CHGSRVA ORDPTFAUTO(*YES) or schedule jobs. Always review PSP docs before proceeding to avoid surprises.

2. Download via Fix Central Website: https://www.ibm.com/support/fixcentral/.
   • Login to the Fix Central Website and then Select Product, Expand Product Group, select IBM Operating Systems > IBM i and select Continue.

• Use one of the following three options to identify the fixes you would like to order from the Identify Fixes page:
  • Cumulative and group PTFs
    • Choose the release and select Continue.
    • Select the PTF groups from the list to order.
    • Note: You may select one or more groups, and then select Continue.

• Individual fix IDs
  • Fill in as many PTF IDs as you would like, separate the PTFs with a space, comma, or by entering them on their own line.
  • Select Continue.
  • Select the PTFs from the list to order, and select Continue.

• Text
  • Use the Text search to find PTFs for specific products, errors, releases, devices, and so on. The list that will be displayed will be a combination of the group and individual fixes lists.
  • Select Continue.
  • Select the PTFs from the list to order, and select Continue.

Download Options – Click continue after selecting.

Step-by-Step: How to Install and Update IBM i PTFs

You install PTFs in two main phases: loading and applying. Follow these steps to get it right.

1. Preparation: Before you start, check your current status:
   • WRKPTFGRP – View your current PTF group levels
   • DSPPTF -Check individual PTF statuses and your IPL side
   • Recommended settings for system values that affect PTF processing

System value	Recommended setting
QALWOBJRST	*ALL or *ALWPTF
QFRCCVNRST	1 or 0
QIPLTYPE	0
QVFYOBJRST	3 or lower

2. Load the PTFs: If you have downloaded your fixes (often via SNDPTFORD or an image catalog), use the following:
   • Navigate with GO PTF and pick Option 8 to install.
   • Set the device to *SERVICE and choose no automatic IPL.
   • Or, directly run LODPTF DEV(*SERVICE) to load from save files.
   • For multiple files, use tools like SNDNETF, FTP, or UPDPTFINF.

2. Apply the PTFs:
   • From GO PTF Option 8, select *SERVICE and decide on IPL (Y for auto, N for manual).
   • Choose which PTFs to apply (e.g., 1 for all).
   • For specific control, use APYPTF LICPGM(57xxYYY) SELECT(SIXXXXX) DELAYED(*YES) for delayed ones.
3. If you received your cumulative PTF package as an image
   • Type GO PTF from any command line.
   • Type option 8 (Install program temporary fix package) and press Enter.
   • The Install Options for Program Temporary Fixes display is shown.
     • Type optyy, where optyy is name of the optical device (for example, opt01) where you loaded the fix media.
     • If you want to automatically IPL your system after loading the fixes, type a Y (Yes) in the Automatic IPL field.
     • If you are not using an image catalog and have additional fixes to install at this time, type a 2 (Multiple PTF volume sets) in the Prompt for media field, and install the additional fixes.
     • Type Y for Other options. The Other Install Options display is shown.
     • Type 1 for Apply Type.
     • Type 1 for the PTF type.

• After loading delayed PTFs, restart with PWRDWNSYS OPTION(*IMMED) RESTART(*YES) IPLSRC(B) to activate them.

PTF Type	IPL Required
Immediate	No
Delayed	Yes
HIPER	Usually
LIC Fix	Always

4. Update and Verify:
   • Check status with DSPPTF LICPGM(*ALL) SELECT(*ALL) RLS(*ALL) OUTPUT(*PRINT).
   • Use WRKPTFGRP for group overviews.
   • If something fails, inspect job logs via DSPJOBLOG OUTPUT(*PRINT).

You handle updates similarly—load new ones and apply over existing setups. Remember, cumulatives are all-inclusive, so you only need the latest.

Best Practices for PTF Management

• Always schedule PTF installs with a maintenance window.
• Apply cumulative PTF packages quarterly in busy environments.
• Review cover letters closely — they tell you IPL needs and action required.
• Use WRKPTFGRP to see your current PTF groups and levels.
• Track pre-req and co-req fixes — the system protects you when they’re missing.

PTFs: FAQs / Question and Answers: https://www.ibm.com/support/pages/node/643545?myns=swgother&mynp=OCSWG60&mync=R&cm_sp=swgother--OCSWG60--R

Final Notes

PTFs keep your IBM i secure, stable, and current. You can treat them like regular system maintenance — but a little planning goes a long way. Understand the types, read cover letters, and don’t forget the IPLs and A/B sides when scheduling your installs.

Stay proactive with PTFs, and your IBM i environment stays healthy — and you stay stress-free.

What Really Happens During IBM i IPL (Restart)