Re: Open files after programs ending

[fkolmann@xxxxxxxxxxxxx]

DAsmussen@aol.com wrote:

>   In order to speed processing, some of the BPCS API's have been modified to
> perform a "return" rather than an "end program".  This leaves files open so
> that the resource-intensive process of opening them doesn't have to be
> performed every time the program is called.
>
> Leaving files open in an API is a rather elegant solution -- right up to the
> point that programs calling the API never tell it to "end program" and close
> the files.

Am I stupid and/or has something about the AS400 changed.
When I code for leaving files open I was under the impression that one needed to
use OVRDBF SHARE(*YES) and also have a file opening program at the top of the
call stack.  Otherwise it does no good at all to just do a return, when you call
the program next time it will open another ODP on top of the one already open.
If a program is called many times u end up with hundreds of ODPs in the PAG.
Rather than speed up things the reverse happens, u clog up memory and the jobs
still create ODPs on every call.  I have seen evidence of hundreds of files open
in BPCS jobs with repeated opens of the same file.  I am puzzled by seeing the
number of files increase then decrease as if there was some sort of cleanup
happening.  Just cannot fathom it.



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