Default: 30000 files
When restoring a large number of files from a dynamic dump backup with ctrdmp, the dump restore can possibly fail with error FNUM_ERR (22, file number out of range). Should you encounter this error with a very large number of restored files, consider the !#FCB option in your ctrdmp script file to increase this value.
Prior to V9, the default was 100, which could lead to error 22 in situations where this number was too low for ctrdmp.