java ee - 32-bit to 64-bit jvm migration - jboss web application & linux server -

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we migrating our java ee / jboss web application running on 32-bit linux box & 32-bit jvm 64-bit linux box & 64-bit jvm.

we analyzed & changed jvm heap, permgen, stack etc., sizes appropriately. enough or should consider other parameters/ make other changes part of 64bit migration?

we using "jboss-eap-4.3" / "jboss-4.0.5.ga". need install / upgrade jboss server?

also, can point me if other mandatory change missing on 32-bit 64-bit migration?

should check if jar files use in our application compatible 64-bit jvm?

  • define tests cover use cases, , run these against both installations
  • define load test scenario, , run against both installations well

management should approve both suites/procedures.

  • there should no need check .jars 64-bit compatibility, unless use jni. anyway problems should revealed tests mentioned before.
  • use newest stable jboss version. otherwise run problems while trying support older version.
  • keep old installation time able switch back.

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