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Connect Direct: Check existence of a dataset on SNODE

 
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ansnero

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Joined: 26 May 2006
Posts: 13

PostPosted: Thu Mar 18, 2010 10:33 pm    Post subject: Connect Direct: Check existence of a dataset on SNODE
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Hi
I have a Connect Direct procedure which copies a file from PNODE to SNODE and then execute a JCL on the SNODE.

Code:
STEP1    COPY FROM(DSN=ABC.CDE.FGH           -         
                     DISP=SHR)                                 -       
               TO (DSN=PQR.STU.VWX                     -         
                DISP=(NEW,CATLG,DELETE)              -       
                UNIT=SYSDA                                    -       
                DCB=(RECFM=F,LRECL=100,BLKSIZE=0))   -       
                COMPRESS EXT                                           
STEP2   IF (STEP1 EQ 0) THEN                                           
          RUN JOB (DSN=SEC.TRIGGER.JCL(CA71)) SNODE   
         ELSE                                                         
          EXIT                                                         
         EIF   



Before I do the COPY I need to check if the dataset PQR.STU.VWX already exists on the SNODE catalog. Is there a way to do that from PNODE using connect direct process statements

Thanks
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superk

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Joined: 26 Apr 2004
Posts: 4648
Location: Raleigh, NC, USA

PostPosted: Fri Mar 19, 2010 9:01 pm    Post subject: Reply to: Connect Direct: Check existence of a dataset on SN
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Well, as I'm sure you already know, the Connect:Direct Process language has a very limited set of instructions (i.e. COPY, RUN JOB, and RUN TASK being the major ones). RUN JOB doesn't take any parameters. RUN TASK does.

So, I'm guessing that in this case only the RUN TASK would make sense. What you'd call to be executed I don't know, since it would have to check for the existence of the dataset (presumably using LISTCAT) and then someone returning that information back to the PNODE (maybe as a return-code value).
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