Very weird issue with Weblogic Admin server Startup . There is no reference in web how to fix this . This is a WARNING and not an error when you start OBIEE 12c .
This will never appear in brand new OBIEE 12c box unless you migrate catalog from 11g to 12c . I have migrated catalog and weblogic starts throwing this warning :
Here is the root cause of this : you can the volume of files created under /tmp and specially the ‘migration’ folder. You need to clean up this and restart OBIEE to resolve this problem .
The issue is weblogic startup found that there are more than 500K files inside the Oracle_Home which is pretty unexpected for weblogic so it just alerts you out