Re: Data Area Locked

[Scott Mildenberger <scottmildenberger@xxxxxxxxx>]

Booth,

Yes, this should be in a procedure in a service program!  Below
is an example of just such a procedure.  One important benefit
of doing it this way is that the method of generating the next
number can change in the future and all that is required is
updating the service program.

Scott Mildenberger

***************************************************************
***  Returns the next file number.      
***************************************************************
                                                                
p NextFileNumber  b                   export   
d NextFileNumber  pi                  like(FileNumber_t)
                                                                

c     *lock         in        CHFileNum    
c                   eval      CHFileNum = ChFileNum + 1
c                   out       ChFileNum   
                                                                

c                   return    ChFileNum              
                                                                

p NextFileNumber  e   
                                                                
     
--- Booth Martin <Booth@xxxxxxxxxxxx> wrote:
> May I add to your request? This strikes me as a perfect
> opportunity to learn
> a bit more about service programs. Shopuld she even be reading
> the data are
> in her program? Should she have a line that says:
> C eval getnextnumber( nextnumber)
> ??
>  
>  
> If so, how would this be done?
>  
>  
>  
>  
> ---------------------------------------------------------
> Booth Martin http://www.MartinVT.com
> Booth@xxxxxxxxxxxx
> ---------------------------------------------------------
>  
> -------Original Message-------
>  
> From: RPG programming on the AS400 / iSeries
> Date: Monday, July 21, 2003 8:30:08 PM
> To: rpg400-l@xxxxxxxxxxxx
> Subject: Data Area Locked
>  
> My data area is used for next number. Only one user can access
> the program
> at any given time. I have defined the data area using the D
> spec, with just
> DS, no U. I have other programs using a data area in the same
> fashion with
> no lock errors. Help!
>  
> Julie
> 
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