The tape handling options, which appear in the with clause, apply to all devices used for the dump or load.
nodismount to keep the tape available for additional dumps or loads
unload to rewind and unload the tape following the dump or load
retaindays to protect files from being overwritten
init to reinitialize the tape rather than appending the dump files after the last end-of-tape mark
See the Reference Manual: Commands.
On platforms that support logical dismounts, tapes are dismounted when a dump or load completes. Use the nodismount option to keep the tape mounted and available for additional dumps or loads. This command has no effect on UNIX or PC systems.
By default, both dump and load commands use the nounload tape handling option. On UNIX systems, this prevents the tape from rewinding after the dump or load completes. This allows you to dump additional databases or logs to the same volume, or to load additional databases or logs from that volume. Use the unload option for the last dump on the tape to rewind and unload the tape when the command completes.