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Home » JAVA400-L » November 2002

Re: AS/400 and Java



fixed

Dieter,

In reference to number 2, are you saying to NOT use CRTJVAPGM on a V5R1 or
V5R2 box? Can you please tell me why?

Thanks,
   Scott P. Johnson

> To: java400-l@midrange.com
> Subject: Re: AS/400 and Java
> From: Dieter.Bender@t-online.de
> Date: Mon, 04 Nov 2002 11:49:38 +0100 (CET)
> Reply-To: java400-l@midrange.com
>
> Hi,
>
> and here my performance tips:
>
> 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







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