AIX

i need to download 4.3 ISO because my server rs6000 no display and i want to install on ther intel server to get data

Also, help me installed cobol database on aix server can work on sco cobol ?

AIX is processor specific and 4.3 will only run on a RS6000 or like...

COBOL is not a database but a programming language, and as UNIX has a few flavours but now very few still exist since you were on AIX you may have IBM AIX or microfocus...
and mfcobol run also on SCO... but there are open alternatives...

AIX 4.3 is out of support. Your best bet is to look on Ebay for AIX media it helps to know what specific RS6000 model you have. AIX 5.3 is the latest version that can run on PowerPC architecture (i.e. IBM 44P model 270). You can NOT install AIX on intel hardware so it's unclear what your goal or environment is.

You would also have to find/purchase cobol; however, I suggest considering you use consider linux or sco on intel. You could also run opencobol as the compiler. The latter options would not cost.