Re: What is the impact of changing the system CCSID?

[Simon Coulter <shc@xxxxxxxxxxxxxxxxx>]

On 24/09/2004, at 3:54 AM, Jim Franz wrote:

> Is there a relationship between CCSID and Code Pages?

Yes. The CCSID is a number representing a Code Page and Character 
Set--possibly multiples. Specifically: "A CCSID is a 16-bit number 
identifying a specific set of encoding scheme identifier(s), characters 
set identifier(s), and additional coding-related required information, 
that uniquely identifies the coded graphic character representations.

> I'm doing ascii to ebcdic xlate and reverse (with api's) for credit 
> card
> apps.
> Would this be affected by ccsid change?

Depends on how you are doing the conversion-- via iconv, or QDCXLATE 
API, or XLATE in RPG, or something else. If you are using job CCSID to 
determine source or target CCSID then the job CCISD is likely to change 
as a result of changing the system value which will in turn affect the 
conversion.

> Also, reading help text for cpyfrmstmf and other such commands says a 
> lot
> about 65535 and 37 (and it's not clear to me this is a "simple" 
> change).

See previous e-mail from me regarding reference sources.

> I assume change at system value does not convert/change existing files.

Correct. But it may affect the conversions performed between file CCSID 
and job CCSID when reading and writing data.

Regards,
Simon Coulter.
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