I have 6 million records, of which i have to remove 7.5K records whose account number i have in a PS file. my question ' is it possible to give omit/exclude cond in a PS file with this 7.5K records?
There are many, many examples of doing this kind of thing on this help board - you could do a search to find them.
If you need more specific help, give an example of the records in your input files (relevant fields only) and what you expect for output. If input file1 can have duplicates within it, show that in your example. If input file2 can have duplicates within it, show that in your example. Give the RECFM and LRECL of the input files. Give the starting position, length and format of all relevant fields.