Monitoring Batch Jobs with JES2

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Njabulo Sphamandla Mhlongo

This Certificate is Presented to:
Sphamandla Mhlongo
for the successful completion of
Monitoring Batch Jobs with JES2 (INTSK009)
3.00 Credit Hours Awarded
Record Completion Date: 11/25/2014
Copyright © 2013, IBM Inc. All Rights Reserved.

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JCL Job Control Language (JCL) is a name for scripting languages used On IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem. JCL acts as an interface between application programming and MVS Operating system. Jcl is used for compilation and execution of batch programs. Apart from the above functionalities JCL can also be used for, 1. Controlling the jobs. 2. Create GDG’S. 3. Allocate PDS,PS file with IBM Utilities. 4. Create Procs. 5. Sort the files. JCL Coding Sheet 1,2,3----------Column Numbers----------72,73------------80 //JOBNAME JOB PARAMETERS------COMMENTS // EXEC // DD //* ------------ Comment (* in 3rd column indicates line in comment) //------------ End of JCL Where // ----- Identification Field job name------- Naming field JOB,EXEC,DD - Statement / Operation NOTE If we want to continue parameters in the next line end the last parameter with “,” and continue next parameter only in 4-16 columns. There are three statements in JCL. JOB EXEC DD JOB Statement: Job statement is used to identify job name and job related parameters JOBCARD = job name + job related parameters. Syntax //JOBNAME JOB ACCOUNT INFORMATION,’USERNAME’,CLASS=A-Z/0-9, // NOTIFY =&SYSUID/RACF ID,MSGCLASS, // MSGLEVEL=(X,Y),PRTY=0-15, // TIME=(M,S),REGION=MB/KB,TYPRUN=SCAN/ // HOLD/COPY,COND=(RC,OPERATOR,STEPNAME) // COND=ONLY OR COND=EVEN,RESTART=STEPNAME JOBNAME It is required to identify this job from other jobs in the SPOOL 1 to 8 characters minimum 1 character and maximum is 8 character. 1st character must be alphabet. Other characters can be alphabets or numeric or $,&,#. Example Job names for personal or lab sessions Userid + 1 / 2 chars KC03P83$ ------- Userid is KC03P83 KC03P84&--------Userid is KCO3P84 ACCOUNTING INFORMATION It is a keyword parameter and codes it after JOB statement. It is used for billing purpose, in real time when we submit any job it is going to take some CPU time. Based on the CPU time there will be some amount involved where this amount has to go will be decided by A/C information parameters. Examples (8012T) (80121I) (8012M) USERNAME It is used to identify the user who has written the JCL. It can be maximum of 20 characters. Note Both A/C information and user name are positional parameters and the remaining job card parameters are keyword parameters. EX1: //KC03P83A JOB (487A),’JANAKI RAM’ EX2: //KC03P84& JOB (488T),’SOMISETTY’ NOTIFY To which user id the job has to be notification after successful or unsuccessful completion. Successful completion means MAXCC = 0 (or) 04 unsuccessful completion means MAXCC > 04. If it is not coded,then user has to check the status of the job from the spo

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EXEC STATEMENT(EXEC) EXEC Statement is used to identify program name or procedure name. Maximum we can code 255 EXEC statements in a JOB. In EXEC statement has two kinds of parameters Position parameter Keyword parameter PGM TIME , COND PROC REGION , PARM If you not mention any thing default it takes PROC PGM This is a positional parameter which must be coded after EXEC with one blank. This parameter indicates the name of program (or) procedure name Syntax //STEPNAME EXEC PGM=REPORT (OR) PROC = PROCEDURE NAME PARM It is keyword parameter and it is mainly used for passing the data to another program. To pass input to Application program To invoke complier option. This is a keyword parameter at activity / step level must be coded with exec operand after PGM parameter. This parameter allows MAX(100) characters. To receive PARM parameter data, Cobol program must be coded with “Procedure Division Using Parameter ” option. These parameters must be declared in the linkage section. DATA DESCRIPTOR STATEMENT ( DD STMT) It is used to identify files( input and output ) used in JCL DD name act as a bridge b/w Cobol program and execution JCL In DD statement has two kinds of parameters. Position Parameter Keyword Parameter * DSN,DISP DATA SPACE,UNIT DUMMY DCB,VOLUME * Position parameter at DD level used with SYSIN to pass data to Cobol programs this is known as In stream data any number of records can be passed to the program. In stream data is used to pass values from JCL to Cobol dynamically. To accept the values in Cobol program, we should have equivalent accept verbs. Syntax //SYSIN DD * ------- Entry of in stream data 100 200 /* ---------------------- End of in stream data DATA We can pass any thing to another program including special character Syntax //SYSIN DD DATA 100 /* 200 /* DUMMY All files are treated as End of the file Syntax //SYSIN DD DUMMY NOTE There is no input to the application all input files treated as End of the file. DSN Through DSN we can refer temporary / permanent file Is a physical space or file where the records will be stored. DISP DISP parameter is used to identify the mode of the file. DISP= ( STATUS, NORMAL , ABNORMAL ) TERMINATION TERMINATION NEW DELETE DELETE OLD KEEP KEEP SHR CATLG CATLG MOD UNCATLG UNCATLG NEW Creating the data set first time OLD Already created accessing the data set all resources are allocated exclusively . No other user can until is released by the current user. If dataset is not existing this creates. SHR The data set can be accessed by multiple users at a time. MOD Appending the records to the existing record NOTE If the dataset is not existing , then MOD is assumed as NEW and writes records to the dataset.

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1. This Certificate is Presented to: Sphamandla Mhlongo for the successful completion of Monitoring Batch Jobs with JES2 (INTSK009) 3.00 Credit Hours Awarded Record Completion Date: 11/25/2014 Copyright © 2013, IBM Inc. All Rights Reserved.