Win a copy of Event Streams in Action this week in the Java in General forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Devaka Cooray
  • Liutauras Vilda
  • Jeanne Boyarsky
  • Bear Bibeault
Sheriffs:
  • Paul Clapham
  • Knute Snortum
  • Rob Spoor
Saloon Keepers:
  • Tim Moores
  • Ron McLeod
  • Piet Souris
  • Stephan van Hulst
  • Carey Brown
Bartenders:
  • Tim Holloway
  • Frits Walraven
  • Ganesh Patekar

WAS 5.x Memory Model

 
Ranch Hand
Posts: 102
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
As you probably know, J2SE 5.0 fixes multiple issues with the Java Memory Model (ex. JSR 133 : Java Language Changes in 5.0). Many of these issues took 3 years to fix and were causing defects in multithreaded applications.

My question is: Does IBM guarantee that these issues have been fixed or worked around in WAS 5.x?

In other words, did IBM build WAS 5.x so that these Memory Model issues do not cause defects in applications using WAS 5.x, which uses J2SE 1.3 and J2EE 1.3?

thanks,
 
Ranch Hand
Posts: 906
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Serge,

According to me, WebSphere cannot garantee anything else than the JDK it is build on.
As WAS 5.0 uses JDK 1.3 and WAS 5.0.2 uses JDK 1.4, you won't have J2SE 5 fixes with these WebSphere releases.

As far as WAS 6 is concerned, I believe it is still based on JDK 1.4 (1.4.2). So you will have to wait for WAS 6.XXX in order to take advantage of J2SE 5.

Nervertheless, WAS comes with an IBM virtual machine instead of the Sun one. So maby IBM has already proposed a workaroud or a solution for the memory problems you evoke. The better way to obtain an official response here would be to contact IBM Tech Support.

hth,


ps: are you the Serge Masse I know ??
 
serge masse
Ranch Hand
Posts: 102
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

Originally posted by Jean-Louis Marechaux:
The better way to obtain an official response here would be to contact IBM Tech Support.



Thanks Jean-Louis, I would much prefer to obtain information from a few good sources than just trust IBM Tech Support on this thorny issue.

If you work in Montreal, check my profile on javaranch, this may help you answer your question.

 
JeanLouis Marechaux
Ranch Hand
Posts: 906
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Yes Serge, I do work in Montreal.

I've check your profile but I can't see any reference to Accovia. :roll:
Anyway, I think your are the one I know.

Good luck in your new project
 
serge masse
Ranch Hand
Posts: 102
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Jean-Louis,
yes it looks like I'm the one you know.
Thanks for the good wishes.
Merry Xmas and a happy new year to you and your close ones.
 
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!