Thursday, October 6, 2011

Weblogic: Defeating the Unable to load performance pack 64bit

JDeveloper 11.1.2, Windows7, 64bit

Unable to load performance pack. Using Java I/O instead. Please ensure that wlntio.dll is in blah....

I get this error message on my local windows machine and it annoys the hell out of me so I had to fix it.

Step 1) Download the generic install version of Jdev (jar version)
Step 2) Install this with a 64 bit vm -- cmd prompt java -server -jar jdevstudio11115install.jar (I used the -server parameter I dont know if this makes a difference but I dont feel like trying without it.)
Step 3 ) make sure you use a 64bit jvm in the install

Worked for me.

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