what meaning does this code have?

Sameeha Basha · New User Joined: 17 Jan 2011 Posts: 6 Location: coimbatore

what meaning does this code have?

i came across the following code:

//BLOWAWAY EXEC PGM=IEFBR14,COND=(0,LT)
//DD1 DD DSN=SIMOTIME.DATA.JCLSCAN1,
// UNIT=SYSDA,SPACE=(TRK,0),DISP=(MOD,DELETE,DELETE),
// DCB=(RECFM=FB,LRECL=80)

can any1 tell me , why are we creating a dataset and deleting it in the same step? what function this dataset could possibly have?

waiting for replies
sameeha

dick scherrer · Posted: Mon Jan 17, 2011 11:09 am

Hello and welcome to the forum,

Suggest you look for the intended meaning on the SIMOTIME site where you found this. . .

While there are reasons to create and delete a dataset in the same step, i suspect this is an example of ensuring a dataset does not exist to prevent interference with a later step that "really" creates the dataset.. . .

Sameeha Basha · New User Joined: 17 Jan 2011 Posts: 6 Location: coimbatore

hey thanks,

i really dint think in this way at all..

it really helped.

thanks again.

dick scherrer · Posted: Mon Jan 17, 2011 11:31 am

You're welcome - good luck

d

Phrzby Phil · Posted: Mon Jan 17, 2011 10:19 pm

To slightly clarify, there are ways to delete a dataset such that, if it does not in fact exist, those ways generate errors, I think JCL ERROR.

This way says delete if present, so generates no error if the dataset does not exist.

Sameeha Basha · New User Joined: 17 Jan 2011 Posts: 6 Location: coimbatore

well, thats a good point.
preventing errors before they actually occur.
thanks.