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Pre-requisite for running an IMS program

 
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prav_06
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Joined: 13 Dec 2005
Posts: 154
Location: The Netherlands

PostPosted: Thu Jul 05, 2007 5:11 pm    Post subject: Pre-requisite for running an IMS program
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Hi All,
I am learning the ABC of IMS, can any one explain what the Pre-requisite. To be more specific am giving you a sample run-jcl that is used by my system

Code:
//STEP02  EXEC PGM=DFSRRC00,                         
//             PARM='BMP,PGM123A,PSB123A,16,,,,,,,,,,Y'
//STEPLIB  DD  dsn=loadmodule
//IMS      DD  DSN=                            What is the use of this DD name
//DFSRESLB DD  DSN=                       What is the use of this DD name
//DFSVSAMP DD  DSN=                         What is the use of this DD name


In short could you please explain what are the DD names that would be used in IMS run jcl and what does each dd name signify

Thanks in advance


Thamilzan.
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Sandy Zimmer

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Joined: 13 Jun 2007
Posts: 826
Location: Wilmington, DE

PostPosted: Thu Jul 05, 2007 5:32 pm    Post subject:
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Those DD names belong to IMS and are needed. They will point to the "part" of IMS that you are using at the time you execute your program. They will change between test and production.
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prav_06
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Joined: 13 Dec 2005
Posts: 154
Location: The Netherlands

PostPosted: Thu Jul 05, 2007 6:01 pm    Post subject:
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Sandy,

Quote:
Those DD names belong to IMS and are needed


Yes i absolutely agree wit ya, But why? is my question, If ya interacting with the DB2 subsystem the control card would be as follows

Code:
//DBRMLIB DD DSN=IBMMFS.MACC.DBRM,DISP=SHR  ==>DBRMLIB
//SYSTSIN DD *
      DSN SYSTEM(DSN)    ===> Db2 SYStem naem
       RUN PROGRAM(PGM157) PLAN(PLAN157)  -  Prog and Plan name
        LIB('IBMMFS.MACC.LOAD')                             <= LOAD LIB
     END
/*


There is an explanation for the DD names used and their functionality. same way is there an explanation for the DD names that is been given above.

Thamilzan.
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