Question about java+postgresql and linux 64bit (web-application)
 

I would like know if i could utilize a:
1) 32 bit jdk (java development kit)+tomcat+postgresql on a 64 bit system linux;
2) 32 bit jdk+ 32 bit tomcat + postgresql 64 bit + Linux 64 bit

If the first solution isn't ok but the second is right when i develop a war file it's usable also on 32 bit system without modify to the code?

Generally speaking, you don't care whether it's compiled on 32 or 64 as a Java client programmer. Yes, you can run 32 bit jdk on a 64 bit machine.

Thanks. :)

Could i experience some problem using jdbc to access on test on a 64 bit database and on final product on a 32 bit database?

AleLinuxBSD
I'd say you are not expected to ;).