ORA-600 error ( kcratr_scan_lastbwr ) solution

Solution for ORA-600 error (  kcratr_scan_lastbwr )


database is not opening
1. sqlplus / as sysdba

2.startup nomount

3.alter database mount;
  3.1 select instance_name,status fom v$instance;

4.recover database;
if not able to recover follow below procedure
  recover database until cancel using backup controlfile;

5.alter database open;
if not ------   alter database open resetlogs;
  5.1 select instance_name,status fom v$instance;