1、在pfile中增加隐藏参数_allow_resetlogs_corruption=TRUE
2、从pfile中启动，执行recover database until cancel，选择cancel
3、系统会提示错误，不管他
4、执行alter database open resetlogs
5、成功最好，不成功一般提示00600错误，如Errors in file /home/oracle/admin/orclsc/udump/orclsc_ora_544920.trc:
ORA-00600: internal error code, arguments: [2662], [0], [1094161685], [0], [1094218279], [8388625], [], []
Errors in file /home/oracle/admin/orclsc/udump/orclsc_ora_544920.trc:
ORA-00600: internal error code, arguments: [2662], [0], [1094161685], [0], [1094218279], [8388625], [], []
6、原因是数据块SCN号小于当前SCN号，用ADJUST_SCN调整SCN号
7、mount状态下调整SCN号，执行alter session set events '10015 trace name ADJUST_SCN level 1'
8、open数据库。