I recently got sucked into helping out with some performance issues for a J2EE app running WebSphere and DB2 on AIX. So far, it's been a fun ride, and I've learned quite a bit. Now I remember why I hate WAS so much. I've never worked with AIX previously and this is my first time tuning an application running on WAS. I've started reading an IBM Redbook entitled Database Performance Tuning on AIX, which looks to be an an excellent read.
We have a sizable performance lab setup, and I'm learning all about LPARs, vmo, tuning IBM's JVM, WebSphere and QA Lab with hopefully more to come.
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