ORA-38760: This database instance failed to turn on flashback database

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SYS@d3vip> startup           
ORACLE instance started.


Total System Global Area 8589934592 bytes
Fixed Size                  7663544 bytes
Variable Size            5335154760 bytes
Database Buffers         3221225472 bytes
Redo Buffers               25890816 bytes
Database mounted.
ORA-38760: This database instance failed to turn on flashback database




SYS@d3vip>  alter database flashback off;


Database altered.


SYS@d3vip> alter database open;
alter database open
*
ERROR at line 1:
ORA-38760: This database instance failed to turn on flashback database


redo log没有了，数据不一致啦


SYS@d3vip> alter database open;
alter database open
*
ERROR at line 1:
ORA-38760: This database instance failed to turn on flashback database


SQL> shutdown immediate;
SQL> startup mount;
SQL> alter database flashback off;
SQL> alter database backup controlfile to trace noresetlogs;
SQL> shutdown immediate;
SQL>select * from v$diag_info;
查找trace位置，view alert.log
将生成的trace更名为 .sql


SQL> startup nomount
SQL>@trace_file.sql   ---重建控制文件
SQL> recover database; 
SQL> shutdown immediate;
SQL> startup; ------使用新的控制文件