ORA-00600: internal error code, arguments: [kcratr1_lastbwr]

Some time we encounter this error while starting the database.
Below is the solution for recovering through this error.

Error:

SQL> startup
ORACLE instance started.
Total System Global Area 167772160 bytes
Fixed Size 1218316 bytes
Variable Size  83888372 bytes
Database Buffers 79691776 bytes
Redo Buffers 2973696 bytes
Database mounted.
ORA-00600: internal error code, arguments: [kcratr1_lastbwr], [], [], [], [],[], [], []

Cause:

Oracle is unable to perform instance recover but it works when is invoked manually.

Solution:

SQL> startup mount
ORACLE instance started.
Total System Global Area 167772160 bytes
Fixed Size 1218316 bytes
Variable Size 83888372 bytes
Database Buffers 79691776 bytes
Redo Buffers 2973696 bytes
Database mounted.
SQL> recover database

Media recovery complete.
SQL> alter database open;
Database altered.

All The Best ............