Mainframe, MVS and zOS Discussion

Hi,

I'm confused with COND parameter:

1.if I code COND=(0,LT) whether it checks previous step's RC is less than 0 or 0. I think that it will check if 0 is less than previous step's rc condition is false. So it'll execute that particular step. Please clarify me which is correct.

But then can RC be less than 0?

2. Let's assume if we COND=(4,LT) in step4 and step2's rc is 8 and step3's rc is 0 whether step4 will execute or not?

You are correct, the condition code can never be less than zero. So "always true". Experiment. Search. Read. COND= is confusing :-), so don't worry if you start off confused. If you work out yourself what is actually going on, you won't have to re-understand from someone's direct explanation, so it'll be easier for you.

Thanks. So if I put COND=(0,LT) or COND=(0,EQ) they both should behave same?

Hi Abhijit,

COND=(0,LT) will always execute the step on which it is coded as the condition will be always false whereas COND=(0,EQ) will bypass the step if previous steps executed with return code 0.

Regards,
Chandan

chandanyadav wrote:COND=(0,LT) will always execute the step on which it is coded as the condition will be always false whereas COND=(0,EQ) will bypass the step if previous steps executed with return code 0.

Regards,
Chandan

I did not get it, can you please elaborate?

Write yourself a little program that takes a value as a parameter and uses that to issue a return code. Create a procedure with as many executions of the program as you need with differing parameters and condition codes and check out the results.