Re: Questionable practice in file handling in CL

[Peter Dow <petercdow@xxxxxxxxx>]

I've done something similar to speed up processing -- instead of 
deleting the logical files, simply remove the logical file members and 
add them after reloading the physical. With today's hardware, you'd 
probably need a lot more then 20-30K records to see the difference.

--
*Peter Dow* /
Dow Software Services, Inc.
909 793-9050
petercdow@xxxxxxxxx <mailto:petercdow@xxxxxxxxx>
pdow@xxxxxxxxxxxxxx <mailto:pdow@xxxxxxxxxxxxxx> /


On 10/20/2017 11:39 AM, Duane Scott wrote:
> I'm looking at a CL that:
>
>    1.  deletes the 6 logicals on a single physical file
>    2.  deletes the physical file
>    3.  recreates the physical from the DDS
>    4.  runs an RPG program that writes (20k to 30k) records to the physical
>    5.  recreates the 6 logicals
>
> The only explanation I can come up with is that it once was thought that the system would be faster if the logicals were built one at a time after the physical was built rather than during the running of the RPG program.
>
> Does anybody have stats to back this up.
>
> I think it's not needed and that a CLRPFM on the physical is all that would be necessary and allow each logical to remain during the run of the RPG build program.
>
> Duane
>
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