When startup database, I can see internal error.
ORA-00600: internal error code, arguments: , , , , , , , 
When I googled, people saying that I need to create undo tablespace and replace it to old one.
But problem is I can not create tablespace as I can not open database.
How can I solve this issue ?
What is the exact OS version ? What changes were made to cause this issue ? ORA-600 errors are only solvable by Support, but XE comes with no support