Difference between Symbolic and an Overriding Parameter?

[Kailash]

Hi,

What is the difference between symbolic and an overriding parameters? I found them to work same but I might be wrong..please guide.

[zprogrammer]

Symbolic parameters and Overriding parameters are not same.
Symbolic Paramaters are VARIABLES/SYMBOLS which are subtituted or overriden by values during execution time
Ex:&HLQ.
Also having symbolic parameters increases the re-usability

So this might be declared with some value value in job or in your scheduler which gets subtitued with values like DEV/TEST/UAT/PROD

Overriding parameters are used to override or nulllify DD/EXEC statements

[Robert Sample]

An override parameter requires a procedure to be invoked for which the override is done. A symbolic parameter can be generated via the // SET statement in JCL and does not require any procedure be invoked to be generated or used in a job stream.

[Kailash]

Thanks PB and Robert.