Hi,

I am run an dbimport databasename -d dbspacename, the system show me this error.
*** database
100 - ISAM error: duplicate value for a record with unique key.
Thank you for you help.

Are you exporting and importing different versions of informix?
If you cannot identify witch table it failing on
write a little script to unload the tables yourself recreate the schema and load the tables via the script and it will tell you witch table is the problem one and go from there.

dbimport creates the database - is there already a database of the same name? If so drop it then try again