Didn't you save the stuff you have changed? No?
MAJOR FAIL!
Why not simply restore the entire system? No backup?
MAJOR FAIL!
If I were you I'd consult the appropriate Oracle Secure Backup Installation Guide, read the fourth chapter "Installing Oracle Secure Backup on Linux or
UNIX" and ensure your system meets all requirements!
However I that's an operating system problem thus your system is not ready for the installation of the.
Undo the changes if you can, if you can't, don't forget to make proper backups in the future!
Those were my thoughs reading this issue..
No offense meant!