Re: Performance Question - Variable Name Call

[John Carr <74711.77@xxxxxxxxxxxxxx>]

RE:     Re: Performance Question - Authority check rate exceeded guideli

>John,
>> At 10:54 AM 11/19/97 -0500, you wrote:
>> I have a system where the performance tools Advisor function is informing me
>> <SNIP>

> One source of excessive authority checks can be when a job has to
> continually re-resolve itself to an object, especially a program.  A typical
> example could be a where program A calls utility program B, and B returns
> with LR on (or B is a OPM CL that closes completely).  
> I have also heard (but havn't verified this myself) that if a program name
> is a variable in an RPG program (as opposed to a declared literal), the OS
> is forced to resolve to that object each time it is called.  The alleged
> reason is that a variable name can be changed, so the authority checking is
> forced.
>jte


No

On a variable name call, It is only resolved the 1st time.  OS/400 checks
to see on each subsequent call if the variable has changed. If it has not, 
OS/400 doesn't resolve it again.  This was changed a loooooong time ago.
It used to be that way on the SYS/38 but was changed I think on one of the
first releases of OS/400.

John Carr

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