I'm trying to change the db name. I've created a trace controlfile. I changed the CREATE CONTROLFILE REUSE DATABASE... with CREATE CONTROLFILE SET DATABASE ...
I've stopped the instance, renamed current control files, modified init.ora as to reflect the new db name, issued startup and then run from svrmgr the script with controlfile creation. In this moment I get the following error:
ORA-01503 CREATE CONTROLFILE failed
ORA-01158 database already mounted
ORA-01507 DATABASE NOT MOUNTED

Could anyone tell me what happened?
Thanx