Modifying *SRVPGM=MCH4431

[Rob Berendt <rob@xxxxxxxxx>]

I think we recently peered down this path.  I think 
I am ready for the trip.

I have a service program.  It is used by many programs.  
I have a compiler directive in these programs that looks like:
H Bnddir('ROUTINES/SRVPGM':'QC2LE')

And the binding directory ROUTINES/SRVPGM has one entry:
                                          --------Creation-------
Object         Type        Library        Date           Time    
                                                                 
SRVPGM         *SRVPGM     ROUTINES       02/02/00       16:00:10

When I change the service program, then other programs 
that use this service program err out with:
MCH4431-Program signature violation.
Cause . . . . . :   The source program PCGETSTS specifies 
a signature        
  X'000C5D4D0B5DAD1E2685A5A737085332' which is not 
supported by service      
  program SRVPGM.                                                            
Recovery  . . . :   The service program interface has 
changed. Re-bind source
  program PCGETSTS.                                                          

How do I avoid this situation?

I am thinking that there are 1 of three solutions.
1)  Employ some method of changing the service program 
that doesn't change the signature.
2)  Employ some binding trick that doesn't care what the 
signature is.
3)  Recompile or rebind every program that uses the 
service program - yuck!

Rob Berendt
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