Hi
A service program is an executable - if it is not there, the program
that expects it to be there will crash.
Modules are the pieces of code that are linked together to make programs
or service programs. You do not need them on a production system, or in
a production library. Once the program or service program is created,
they are not touched. They cannot be run or executed.
If you know Windows, a service program is similar to a DLL, shared
library in UNIX. Modules are like the .lib files in Windows, the .a
files in UNIX - static libraries.
Here is a paragraph that describe static libraries - this describes the
similar use of *modules on the i -
Static libraries are a collection of object files, and conventionally
they end with a ".a" suffix in UNIX variants, and ".lib" in Windows.
When a program is linked against a static library, the machine code from
the object files for any external functions used by the program is
copied from the library into the final executable.
Now to your first question - modules do not use other modules, at least
not the way I think of it - they may have calls to something in another
module, I suppose. Programs and service programs are built (created)
FROM modules.
Now the hard way - there is an API that can tell you which modules were
used to create a PGM/SRVPGM - you could run that API against every
non-IBM PGM/SRVPGM on your system, everything not part of a vendor
application, etc.
Or you keep a file around that contains all of your object relationships.
Or you use Alan Campin's tool for creating objects - it puts the command
in the header comments - that way they are documented. Then you might
have only a search through source to find out the answer here.
You really need some kind of change management application - David, the
moderator of this group, works for a company that makes one. There are
several others in the SCM or software change management arena. They can
help you with impact analysis and even recreate everything affected by
your changes.
HTH
Vern
On 6/13/2012 1:40 AM, Nisha Ramesh wrote:
Suppose I made some change to module 1 and I want to recompile all the
programs which uses this module. How will I know what all are the
modules/SP which uses the module?
After creating a program by giving reference to a SP, can I delete the SP
object?
midrange.com
