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Frances Denoncourt wrote: > ... > All files are accessed via I/O modules (service programs). > ... > My boss asks if I am sure that I won't be creating problems with file updates. > > I'm thinking we're OK because no files are SHARE *YES and we seldom override > data base files. > Fran, when you access files through service programs (or called programs) you can get inadvertent file sharing. Assuming SHARE *NO, and two programs: If PGM1 and PGM2 both have an F spec for a file, they would not be sharing the file. If they both do a READ, they will each get the first record. However, if they are calling a service program instead of using their own F specs, and they both call the "read" procedure, then PGM1 will get the first record and PGM2 will get the second record.
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