Re: Java Batch

JZOS has become part of Unix System Services in z/OS. Handling is very 
easy, especially if combined with other Java tools like ANT. There is an 
interesting sample ****ped with JZOS: Installing an running a Apache 
Tomcat server as a batch job or started task. It really takes only a few 
minutes to get the server up and running.

I havn't made any research on performance, but the last I've heard is 
that Java is about 30% slower as COBOL, which is reduced, if your S/390 
uses special chips. Also IMS uses now special regions, JMPP and JBMP for 
Java apps but I'be have no experience with this.

Regards

Thomas


Pakku schrieb:
> I've spent much of this morning looking for some comparison between
> the performance of Java and COBOL for batch programming on z/OS.  I
> haven't found any useful information and am hoping I might find some
> here.
> 
> I know that IBM bought the JZOS product a couple years back with the
> intent of enabling Java in the batch world.
> Has this taken off?
> 
> Also read somewhere that given that Java has to be reinterpreted (from
> the bytecode produced by compilation) by the JVM at runtime, there is
> no way it could outperform COBOL in classical batch processes like
> payroll or month-end credit card statement processing.
> 
> Is this so?
> 
> Would really appreciate hearing from anyone who has experience with
> JZOS or other forms of running batch Java on MVS.
> 
> Thanks!