In CICS you can do a STARTBR on a VSAM KSDS or ESDS file and then
issue a READPREV to get the previous record from the key you started
at. However, this function is not available to COBOL or IBM
Assembler in batch. We have an issue where we need to know what the
last RBA is in an ESDS file. It would be nice if we could do a
STARTBR with a key of high-values and then do a READPREV.
Has only via the mother of invention, found a way to do this that is
fast? I know we could do a startbr at the begging or somewhere in
the middle, do READNEXT saving off the keys until we hit EOF at which
point the saved key would be the highest RBA. But we have a huge
file and this way would take too much time.
Thanks in advance for any suggestions.
Steve Wiegand
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