数据库版本信息

SQL> select * from v$version;
BANNER
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Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
PL/SQL Release 11.2.0.1.0 - Production
CORE	11.2.0.1.0	Production
TNS for 64-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production

数据库启动报ORA-00600 dbkif_find_next_record_1错误

alter database open
Beginning crash recovery of 1 threads
 parallel recovery started with 3 processes
Started redo scan
Completed redo scan
 read 133 KB redo, 72 data blocks need recovery
Started redo application at
 Thread 1: logseq 49070, block 14720
Recovery of Online Redo Log: Thread 1 Group 2 Seq 49070 Reading mem 0
  Mem# 0: D:\APP\xff\ORADATA\ORCL\REDO02.LOG
Completed redo application of 0.09MB
Errors in file d:\app\xff\diag\rdbms\orcl\orcl\trace\orcl_ora_2340.trc  (incident=477756):
ORA-00600: ??????, ??: [dbkif_find_next_record_1], [], [], [], [], [], [], [], [], [], [], []
Incident details in: d:\app\xff\diag\rdbms\orcl\orcl\incident\incdir_477756\orcl_ora_2340_i477756.trc
Wed Sep 26 10:52:07 2018
Trace dumping is performing id=[cdmp_20180926105207]
Wed Sep 26 10:52:08 2018
Aborting crash recovery due to error 600
Errors in file d:\app\xff\diag\rdbms\orcl\orcl\trace\orcl_ora_2340.trc:
ORA-00600: ??????, ??: [dbkif_find_next_record_1], [], [], [], [], [], [], [], [], [], [], []
Errors in file d:\app\xff\diag\rdbms\orcl\orcl\trace\orcl_ora_2340.trc:
ORA-00600: ??????, ??: [dbkif_find_next_record_1], [], [], [], [], [], [], [], [], [], [], []
ORA-600 signalled during: alter database open...

这里比较明显，数据库是在做实例恢复的时候遭遇到ORA-600 dbkif_find_next_record_1错误,无法正常应用日志导致该错误,具体原因由于:the NAB and finds it is less than the block# from the on-disk-RBA recorded，对于这种问题，通过人工修改next available block# in the Online Redo Log的相关记录,即可正常open数据库,而且理论上数据0丢失