Unicenter CA-Scheduler Job Management for VSE User Guide

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5.4 What Is Wrong with These Examples? Example 3 Criteria for job JOBA: MON AND JOBB SCHED1 OR WED Criteria for job JOBB: MON OR WED AND JOBA SCHED1 Here is another problem. Why do not JOBA and JOBB in schedule SCHED01 run when expected? Both jobs are supposed to run Mondays and Wednesdays. On Mondays, JOBB should be the predecessor to JOBA, but conversely on Wednesdays. The meaning of these criteria statements is confusing until you add some parentheses to show how the system will interpret this: Criteria for job JOBA: (MON AND JOBB SCHED1) OR WED Criteria for job JOBB: MON OR (WED AND JOBA SCHED1) Now it is a bit clearer. First, look at the selection criteria. Both jobs are always selected on Mondays and Wednesdays: ■ ■ JOBA is always selected on Wednesdays, so JOBB is, too. JOBB is always selected on Mondays, so JOBA is also selected on Mondays. That seems in order, so look at the predecessor conditions, remembering the rule for evaluating predecessors: There are no OR relationships with selection-defined explicit predecessors. All ORs become ANDs. The preceding means the explicit predecessor of JOBA is JOBB, and the explicit predecessor of JOBB is JOBA. When jobs require each other as predecessors, that creates a predecessor loop, which is also called predecessor deadlock. Although these deadlocked jobs are selected properly, neither job ever runs because their predecessors are never satisfied. You can run the Analyze Report at any time to detect deadlocks automatically. Example 4 Criteria for job JOBA: NOT MON OR NOT TUE 5-26 Unicenter CA-Scheduler User Guide
5.4 What Is Wrong with These Examples? Suppose you want JOBA to run on any day but Monday or Tuesday. Why does the criteria statement preceding not make that happen? Instead, JOBA is always selected because on Mondays, JOBA is selected because it is not Tuesday. And on Tuesdays (and every other day), JOBA is selected because it is not Monday. There are two valid ways to code this criteria: Criteria for job JOBA: NOT (MON OR TUE) Another way to express this criteria: NOT MON AND NOT TUE Example 5 Criteria for job JOBB: ADAY AND JOBA SCHED1 AND GBLB1=YES OR ADAY AND GBLB1=YES JOBB in SCHED01 will always be selected on ADAY. The confusion arises when evaluating predecessors. JOBB is always supposed to wait for the global GBLB01 to be set to YES. If JOBA is in the day's workload, it is supposed to be a predecessor to JOBB. That is not what happens. Instead, when JOBA is present, status shows that JOBB waits for predecessors JOBA, GBLB01, and GBLB01. When GBLB01 is set to YES, JOBB starts regardless of JOBA because of the second GBLB01. The following is what happens. After JOBB is selected, these predecessors are left for evaluation: (JOBA SCHED01 AND GBLB01=YES) OR (GBLB01=YES) JOBB will start as soon as GBLB01 is set to YES. The correct way of coding this criteria statement is: Criteria for job JOBB: ADAY AND JOBA AND GBLB1=YES OR ADAY Chapter 5. Criteria Language 5-27
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Unicenter ® CA-Scheduler ® Job Ma
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Contents Chapter 1. Introduction .
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3.13.1.2 ALTer or REPlace an Auto-R
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7.1.2.1 Example 1 . . . . . . . . .
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1.1 Beginning with the Basics 1.1 B
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1.1 Beginning with the Basics To sh
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1.1 Beginning with the Basics This
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1.2 How Unicenter CA-Scheduler Work
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1.2 How Unicenter CA-Scheduler Work
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1.3 Additional Features ■ Which j
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1.4 Summing Up 1.4 Summing Up The f
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2.1 Getting Started 2.1 Getting Sta
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2.1 Getting Started SCHD-MM MAIN
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2.1 Getting Started 2.1.4 Logging O
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2.2 Maintaining Stations SCHD-WM S
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2.2 Maintaining Stations SCHD-UTIL
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2.2 Maintaining Stations To submit
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2.2 Maintaining Stations SCHD-WD S
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2.3 Maintaining User Records 2.3 Ma
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2.3 Maintaining User Records SCHD-
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2.3 Maintaining User Records To All
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2.3 Maintaining User Records Unicen
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2.3 Maintaining User Records Users
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2.3 Maintaining User Records SCHD-
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2.3 Maintaining User Records Option
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2.3 Maintaining User Records If use
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Chapter 3. Maintaining the Database
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3.1 Defining Schedules ■ ■ ■
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3.1 Defining Schedules AUTO SELECT
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3.1 Defining Schedules 3.1.3 Checki
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3.1 Defining Schedules Option Purpo
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3.1 Defining Schedules 3.1.4.2 When
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3.1 Defining Schedules Sequence By
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3.1 Defining Schedules If your site
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3.1 Defining Schedules A Value Of U
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3.2 Defining Optional Schedule Reco
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3.3 Copying Schedules 3.3 Copying S
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3.3 Copying Schedules To Copy A Sch
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3.4 Displaying Schedules SCHD-SU S
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3.4 Displaying Schedules PRESS ENTE
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3.5 Deleting Schedules SCHD-SD SC
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3.5 Deleting Schedules If you are n
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3.6 Analyzing Schedules SCHD-UTIL
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3.6 Analyzing Schedules Unicenter C
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3.7 Automatic Console Replies for S
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3.8 Summary of Schedule Maintenance
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3.9 Defining Jobs 3.9 Defining Jobs
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3.9 Defining Jobs SCHD-JU JOB DEF
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3.9 Defining Jobs SCHD-JM JOB MAIN
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3.9 Defining Jobs 3.9.3.3 When Will
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3.9 Defining Jobs The chart precedi
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3.9 Defining Jobs those with earlie
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3.9 Defining Jobs 3.9.3.5 What JCL
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3.9 Defining Jobs If You Have multi
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3.9 Defining Jobs ■ ■ ■ ■ O
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3.9 Defining Jobs When you are read
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3.9 Defining Jobs If You Want Notif
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3.9 Defining Jobs If You Want To Se
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3.9 Defining Jobs The Job Criteria
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3.9 Defining Jobs The criteria stat
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3.9 Defining Jobs ■ MAXIMUM TIMEs
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3.9 Defining Jobs DESTINATIONS and
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3.9 Defining Jobs For These Message
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3.9 Defining Jobs To Separate All J
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3.9 Defining Jobs 3.9.4.6 Defining
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3.10 Displaying and Updating a Job
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3.11 Deleting Job Records 3.11 Dele
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3.11 Deleting Job Records SCHD-JM
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3.12 Analyzing Jobs 3.12 Analyzing
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3.12 Analyzing Jobs To display a fu
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3.13 Automatic Console Replies for
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3.14 Summary of Job Maintenance 3.1
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3.14 Summary of Job Maintenance To
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4.1 Online Monitoring Panel 4.1 Onl
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4.1 Online Monitoring Panel This ch
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4.2 Displaying Status Schedules and
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4.2 Displaying Status The table fol
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4.2 Displaying Status To Restrict T
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4.2 Displaying Status 4.2.4.1 Defau
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4.2 Displaying Status SCHD-CP SCHE
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4.2 Displaying Status If the schedu
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7.5 Multiple CPU Considerations CAJ
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7.6 NJE Processing In the preceding
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7.6 NJE Processing 7.6.2.1 NJE Job
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7.6 NJE Processing 7.6.4 Installati
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7.6 NJE Processing Status BUSY Mean
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7.7 Summing Up Prefix PW DM Transac
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Glossary This glossary defines term
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documentation batch command. A comm
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Unicenter CA-Scheduler uses when or
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The payroll department's month-end
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Index Special Characters "Who is lo
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Commands (continued) operator (cont
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F FAIL CODE field 7-16 FAILED queue
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MBR SUBID field 3-65 MCPU installat
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Predecessors (continued) types (con
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Scheduling (continued) jobs 1-5, 5-
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User (continued) authority levels 2
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