Re: AS/400 and Java

["David Gibbs" <david@xxxxxxxxxxxx>]

<Dieter.Bender=zqRNUXuvxA0b1SvskN2V4Q@public.gmane.org> wrote in message
1036406299.3dc64e1ba381f@webmail.t-online.de">news:1036406299.3dc64e1ba381f@webmail.t-online.de...
> 1. read the recent manuals (Performance Capabilities Reference
> recommends the JIT environment since V4R5!)
> 2. don't use CRTJVAPGM on boxes > V4R5
> 3. don't use the native driver, its buggy, use the latest Toolbox
> driver
> 4. don't use record level access (more IO Operations compared to SQL)
> 5. run your application server on inexpensive boxes (Wintel, or Linux
> on Intel), if possible (scalability)
> 6. Don't mix Java with RPG and/or COBOL, the context change is very
> expensive
> 7. use all features of the as400 as database server, you've paid for
> it
> 8. for maximal speed with minimal hardware requirements use assembler
> and shift your bytes bit by bit

Dieter:

Could you provide some backup information as to why you have come to these
recommendations?  A significant number of them are quite contrary to what
most iSeries professionals have thought for quite some time.

david