问题

DG备库无法转为读写

尝试解决方案

shutdown immediate;
startup mount;
alter database open read write;

• ORA-16003

alter database clear logfile group 11：
alter database clear unarchived logfile group 11;

• ORA-00313

最终解决方案

alter database clear unarchived logfile group 20;
alter database activate standby database;
select open_mode from v$database;
read write