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What are the keywords associated with DCB? How can you specify DCB information? What is the OS precedence for obtaining that DCB information, ie. where does the system look for it first?
The keywords associated with the DCB parameter are LRECL, RECFM, BLKSIZE and DSORG. The DCB information can be supplied in the DD statement. The sysem looks for DCB information in the program code first.


  
Total Answers and Comments: 1 Last Update: October 30, 2006   
  
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October 30, 2006 16:23:43   #1  
Hervey        

RE: What are the keywords associated with DCB? How ca...
The OS method for obtaining DCB information--there was none. It was up to whoever was creatingf the JCL to code these parms correctly. If the pgm included some of these; then jcl & program had to agree; otherwise, an S013 abend was received.
 
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The DD statement links the external dataset name (DSN) to the DDNAME coded within the executing program. It links the file names within the program code to the file names know to the MVS operating system. 
Latest Answer : Its the Data Definition (DD) statement It should not exceed 8 charactersIt is normally the identifier name which we give in the cobol program to identify the that the trailing DSN is for the particular DD name for eg:COMMLY   ...

What are the keywords associated with DCB? How can you specify DCB information? What is the OS precedence for obtaining that DCB information, ie. where does the system look for it first?
The keywords associated with the DCB parameter are LRECL, RECFM, BLKSIZE and DSORG. The DCB information can be supplied in the DD statement. The sysem looks for DCB information in the program code first. 

The value after the PARM= specifies control information to be passed to the executing program of the job step.  
Latest Answer : It is only used for to pass the values by JCL to the perticular application program like COBOL program. ...

Data definition name is the eight character designation after the // of the DD statement. It matches the internal name specified in the steps executing program. In COBOL that's the name specified 
Latest Answer : The DD name is the logical 8 characters file name which alllows the pplication program to identify or tag the dataset.Whereas the DSN is the physical file name used by the MVS to identify the dataset.like in any application program we can write ...in ...

DCB stands for data control block; it is a keyword for the DD statement used to describe datasets. Keywords associated with it are BLKSIZE, DEN, LRECL and RECFM.  
Latest Answer : DCB parameter is used to provide file characteristics to use in completing Data control Block(DCB) for a datasetSyntax1. DCB=(subparameter,subparameter,..)2.DCB=dsname3.DCB=*.DDname4.DCB=*.stepname.ddname5.DCB=*.stepname.procstepname.ddnamesubparameter ...

I need to send an email from mainframe using the parmcard which has HELO MAIL FROM:RCPT TO:DATAFROM: TO: SUBJECT:etcbut i also need to get the system date and time each time I do so.How do I get that 
Latest Answer : To send an Email from mainframe use:-PROC :- ARRMMAIL and use the control mem as RRMROLL1) . You can get this by using following code :In JCL code as:-//JS010 EXEC ARRMMAIL, RREMAIL='CORD2DAL.DDPP.PARMLIB(RRMROLL1)' ...


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