Can I move an existing instance of PPM from Windows to Linux?
CA does not have a specific set of documented steps to follow, however, it should be able to be done using these steps assuming the database is already on Oracle:
1. do a clean install of the same version of PPM on the linux environment
2. patch it to the same level
3. point it to the current oracle database
NOTE: If you have any customizations to the file structure, then you would need to review those and make the changes in the new system accordingly.