1.

What do you mean by Condition checking in JCL?

Answer»

Yes, condition CHECKING is possible in JCL, both at the job level and at the STEP level. Obviously, this is done using the COND keyword along with a return code and operand that are DEFINED in JCL. The concept of conditional checking is similar to the concept of (if else) in many programming languages (such as C, C++, Java, ETC.).  

Syntax: 

COND=(RC,OP) COND=(RC,OP,STEPNAME) COND=EVEN COND=ONLY

Here, RC stands for Return code, OP for Operator, and STEPNAME for Step name. 

RC can be assigned any value from 0 to 4095, but in most cases, it will be assigned a value from 0 to 16 as follows:

0 (Successful execution of a program i.e., Normal execution).

4 (Successful execution of a program with some warning).

8 (Error)

12 (Severe Error)

16 (Fatal Error)

‘OP’ can be any one of the following:

EQ (Equal to)

NE (Not Equal to)

LT (Less than)

LE (Less than or Equal to)

GT (Greater than)

GE (Greater than or Equal to)


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