此类错误可能发生在服务器电源突然失败（使用备份控制文件进行恢复）
报错类型：
SQL> alter database open
*
ERROR at line 1:
ORA-00600: internal error code, arguments: [kcratr_nab_less_than_odr], [1],
[23], [81], [189], [], [], [], [], [], [], []解决方案：
1.查看控制文件位置与当前oracle使用的联机重做日志文件
SQL> Show parameter control_files;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_files string D:\APP\MAZAR\ORADATA\ORCL\CONT
ROL01.CTL, D:\APP\MAZAR\FLASH_
RECOVERY_AREA\ORCL\CONTROL02.C
TL
SQL> select a.member,a.group#,b.status from v$logfile a ,v$log b where a.group#=b.group# and b.status='CURRENT';
MEMBER
--------------------------------------------------------------------------------
GROUP# STATUS
---------- ----------------
D:\APP\MAZAR\ORADATA\ORCL\REDO02.LOG
2 CURRENT2.关闭数据库，并备份控制文件
C:\Windows\system32>COPY D:\APP\MAZAR\ORADATA\ORCL\CONTROL01.CTL D:\APP
1 file(s) copied.3.挂载数据库并使用控制日志与联机重做日志进行恢复
SQL> recover database using backup controlfile until cancel;
ORA-00279: change 1460665 generated at 10/08/2012 08:38:00 needed for thread
ORA-00289: suggestion :
D:\APP\MAZAR\FLASH_RECOVERY_AREA\ORCL\ARCHIVELOG\2012_10_14\O1_MF_1_23_%U_.ARORA-00280: change 1460665 for thread 1 is in sequence #23
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
D:\APP\MAZAR\ORADATA\ORCL\REDO02.LOG
Log applied.
Media recovery complete.4.打开数据库，并重置日志文件
SQL> alter database open resetlogs;
Database altered.参考文件：
http://mohamedazar.com/2012/10/14/ora-00600-kcratr_nab_less_than_odr-when-alter-database-open-fails/
