FNDCPESR is the executable that is responsible for parameters of the concurrent programs and is linked to concurrent programs.Maybe changes to the links and paths caused some sort of invalidation. you should have done a relinking of that executable before placing the backup file to check whether it was a linking issue
Anyways if you still have the old file please log a service request to oracle and upload it
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We have restored the file 'FNDCPESR' from latest Prod backup and all the host programs (.prog) were running fine. We did not relink the softlinks.
We wanted to know how all of a sudden this 'FNDCPESR' file got corrupted.
Actually we saw it was recreated with 0 byte size.
Thanks & Regards,