Re: committment control and file changes

[Vern Hamberg <vhamberg@xxxxxxxxxxx>]

Joel

Have you looked at the help text of STRCMTCTL? It mentions some 
requirements - among them, the file which will be processed under 
commitment control must be journaled. There is NO journaling of LFs - or 
of OPNQRYF or anything other than PFs, as far as files go.

OPNQRYF is not a real file - it is a virtual access path, one could say 
- no data contained therein, only a PATH to the data, known as an ODP or 
open data path.

Likewise, LFs are only an access path.

You should also look at the STRJRNPF command - more information there.

You should also look at the COBOL reference to see how to specify using 
commitment control on a file - in RPG it is on an F-spec - I don't know 
the equivalent.

It's all in the manuals at Infocenter - this is a pretty big topic, much 
going on around what might seem a simple question!!

HTH
Vern

On 5/30/2012 3:16 PM, Stone, Joel wrote:
> Physical file changes under commitment control can be rolled back for errors.
>
> Do Logical files behave the same way ie the underlying PF would roll back the same way that direct PF updates would?  Or are there some restrictions on LF's that would cause programmers to use the LF to read the PF by primary key and update the PF directly?
>
> Do OPNQRYF's behave the same way as PF's also?  Ie will the based-on PF roll back on an error while under commitment control?
>
> Does the file output method matter?  Ie if a file is opened as OUTPUT vs UPDATE would both of these behave the same ?  ie rollback on error under CC?
>
> Some pgmrs here claim that PF updates roll back nicely, whereas LF updates do NOT roll back.  Is this possible?  (assuming all files are journalled properly and such)
>
> Thanks!
>
>
>
>
>
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