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Work Management IBM i 7.3 Systems management Work management IBM Note Before using this information and the product it supports, read the information in “Notices” on page 197. This document may contain references to Licensed Internal Code. Licensed Internal Code is Machine Code and is licensed to you under the terms of the IBM License Agreement for Machine Code. © Copyright International Business Machines Corporation 2004, 2015. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Work management................................................................................................ 1 PDF file for Work management....................................................................................................................1 What's new for IBM i 7.3..............................................................................................................................2 Introduction to work management..............................................................................................................2 Your system as a business..................................................................................................................... 2 A job's life................................................................................................................................................3 Submitting a job................................................................................................................................ 4 The job enters the job queue............................................................................................................4 The job enters the subsystem.......................................................................................................... 4 The subsystem uses memory from the memory pool to run the job...............................................5 The job finishes and moves to the output queue.............................................................................5 How work gets done............................................................................................................................... 5 What work is......................................................................................................................................5 What happens before work enters the system................................................................................ 6 How work enters the system............................................................................................................ 6 How work gets processed.................................................................................................................6 How work leaves the system............................................................................................................ 7 Concepts.......................................................................................................................................................7 The structure of your system................................................................................................................. 7 Subsystems shipped with the system.............................................................................................. 7 Start-up programs.............................................................................................................................8 What happens during the IPL......................................................................................................9 Types of start-ups............................................................................................................................. 9 Powering down your system.............................................................................................................9 IBM Navigator for i.......................................................................................................................... 10 Subsystems ......................................................................................................................................... 10 The controlling subsystem............................................................................................................. 10 Why consider multiple subsystems................................................................................................11 Subsystem description................................................................................................................... 11 Subsystem description attributes.............................................................................................12 Work entries.............................................................................................................................. 12 Routing entries.......................................................................................................................... 15 How a subsystem starts................................................................................................................. 18 How workstation devices are allocated....................................................................................19 Scenario: Workstation allocation.............................................................................................. 20 Memory pools.......................................................................................................................................21 Types of memory pools.................................................................................................................. 22 Pool numbering schemes............................................................................................................... 23 Memory pool allocation.................................................................................................................. 25 Memory pool activity level..............................................................................................................26 Jobs...................................................................................................................................................... 27 Proper authority.............................................................................................................................. 27 Job characteristics..........................................................................................................................27 Job name syntax....................................................................................................................... 28 Job Attributes............................................................................................................................28 Job description..........................................................................................................................28 Job descriptions and security................................................................................................... 29 Call stacks..................................................................................................................................30 Class object............................................................................................................................... 30 Job user identity........................................................................................................................32 Job user identity examples.......................................................................................................32 iii Threads......................................................................................................................................33 Locked objects...........................................................................................................................35 Job types.........................................................................................................................................36 Autostart jobs............................................................................................................................ 36 Batch jobs..................................................................................................................................37 Communication jobs................................................................................................................. 38 Interactive jobs..........................................................................................................................39 Prestart jobs.............................................................................................................................. 44 Reader and writer jobs.............................................................................................................. 48 Server jobs.................................................................................................................................48 System jobs............................................................................................................................... 49 Job scheduling options........................................................................................................................ 53 Management Central scheduler..................................................................................................... 53 Job schedule entries.......................................................................................................................53
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