ISeries 101

People who move to the 400 from other computing environments and backgrounds have some common areas of misconceptions and concepts difficult to grasp at first.

Multi User Queue Theory

Many users come to the 400 from a Desk Top reality where they were the only people using some computing resource. Such people can have trouble comprehending

• a multi-user environment in which
• Jobs can go to JOBQ to not run right away, but send Message to MSGQ upon completion;
• Reports to Printer OUTQ wait in line behind other people's reports;
• Reports from multiple people can be accessed.

Compiled Objects

Many users come from a PC environment that makes heavy use of scripted and interpretive languages that read a line of code and execute it. For such individuals, compiled programs can be a foreign concept.