COMMON POWERUp 2025

Prestart server jobs are used to handle requests from clients in the network. There are many uses of prestart jobs on IBM i, the most common is the database server. Prestart jobs present many challenges for how to understand what is happening on the system, what work requests these jobs are handling, and generally how to manage them. This session will review all the key characteristics of prestart jobs, provide many tips to better understand what is happening on your system, and review how you can use subsystem configuration to better manage your prestart jobs. 

We’ve all heard the saying: Don’t be afraid of change - be afraid of not changing. But let’s be honest - change is hard. Whether it’s outdated technology, entrenched processes, or resistance from within, modernization can feel like an uphill battle. Does it frustrate you when your applications are labeled legacy? You're not alone. This session is a real-world case study of how one retailer navigated the journey to modern application development using IBM technologies, including Power, IBM i, Ansible, and more. Along the way, they didn’t just modernize their apps—they transformed how IT is perceived within the company. IT is in a prime position to drive meaningful change. But how do you start? How do you overcome resistance and build excitement? In this session, you’ll learn practical strategies to shift mindsets, gain leadership buy-in, and turn legacy into WOW!

 In days gone by the IBM supplied program QSTRUP combined with a couple options on CHGIPLA was good enough for most IBM i shops. It started what seemed to be needed and anything else we stumbled through after each IPL. When it was time to shut down a PWRDWNSYS or ENDSBS command took down whatever was running. We were happy.  
 
Today though we often see dozens of subsytems running many web servers, other needed batch jobs and services. We see monitors and queue processing jobs and many writers. For security purposes we should be starting only the TCP servers that we need, not all of them. Likely we should not start IPV6 and start things in sequence as well.  
 
Further considerations may be needed in an HA environment. These include not starting jobs until iASPS are available and starting different IP interfaces and services depending on production or backup mode of the server. We may want to handle special startup modes while doing PTFs, backups or other system maintenance.  
 
In this session we will work with customizing that startup. We'll discuss staring PASE jobs with QSH, web server jobs and more. Finally we will also work with sequencing the shutdown of the system. As part of this we'll discuss some simple ways to know what needs to be shut down and smoothly handling that.