Will WLS start 32-bit or 64-bit native library?

Question

After installing the generic WLS 10.3.4 on HP Itanium platform (64bit), I got both 32-bit and 64-bit native libraries. At runtime, which native library will be used? Is WLS smart enough to pick the right one depending on the JVM I am using? Is it that if I have 32-bit JVM then WLS will pick 32-bit native library at runtime?
Edited by: user702439 on Feb 7, 2011 7:56 PM

Answer 1

Hi,
If you are using 64 bit operating system then you must consider following things to make sure that the corre ct 64-bit libraries gets loaded by WLS:
*1).* For 64 bit installation always use Generic Jar Installers: http://middlewaremagic.com/weblogic/?p=2731
*2).* While using Generic Jar installer Make Sure that you already has 64-Bit JDK installed in your Box where you want to install WLS.
*3).* In LINUX Compatible JDKs you will find a JAVA_OPTION "-d64" which can be used to instruct JDK to run in 64 bit mode while Installing the WLS using generic Jar like following:
JAVA_HOME/bin/java -d64 -Xmx1024m -jar wls1034_generic.jar
If you follow above points then WLS is smart enough to pick the correct Libraries in the java.library.path...But if you donot follow above points then your WLS might be using 32 bit libraries and you may receive some WARNING while booting up your server complaining regarding the Libraries and Native IO related messages.
Thanks
Jay SenSharma