记一次oracle adg不实时同步，差了一个小时No Standby redo logfiles created for thread 1

alert日志显示No Standby redo logfiles created for thread 1

select * from v$logfile;

查看原来只有一组standby log

alter database recover managed standby database cancel;

先停止同步，再添加两组，因为使用了omf所以就不指定路径了

alter database add standby logfile thread 2 group 10 size 2048m ;
alter database add standby logfile thread 1 group 12 size 2048m ;

开始同步

alter database recover managed standby database using current logfile disconnect;

再查看alert.log已经没有报错了