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WebSphere 6.0 on AIX 32/64 bit

Posted on 2006-11-08
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Last Modified: 2013-12-10
HI,

We just learned that WAS 6.0.2 on AIX can be 32 bit or 64 bit.

Question-> for a given WAS, how do we know if it is 32 bit or 64 bit?

Thanks
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Question by:Edy1988
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Expert Comment

by:HonorGod
ID: 17951133
at a command prompt:

# cd /opt/WebSphere/AppServer/bin                       << Your directory may not match exactly
# . ./setupCmdLine.sh                                            << This line starts "period space period slash"
# echo $JAVA_HOME                                              << Verify that JAVA_HOME is now in WebSphere directory structure
# $JAVA_HOME/bin/java -version                             << Should display information about the java version
 ...                                                                         << The result should contain -32 or -64 to show the word size
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Author Comment

by:Edy1988
ID: 17953697
Can't a Java 32 bit work with WebSphere 64 bits, and the opposite?
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Accepted Solution

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HonorGod earned 400 total points
ID: 18605063
Sorry, I don't understand the question.

If you are asking if an application compiled by a 32 Java compiler can successfully execute on a 64 bit JRE, then the answer is yes.  The reverse, however, may not be true.

Consider the reason behind the larger word size.  This allows larger objects, and address spacing.  So, a 64 bit JRE allows more objects, and larger objects to be used.

It is possible for an application to be developed using a 64 bit environment that would define objects that would be too large to be executed in a 32 bit JRE.

Hopefully this answers your question.

If I have misunderstood, please forgive me.
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