Oracle DG --检查

检查DG是否同步

　　01,  查看主备可切换状态

select switchover_status from v$database;
select db_unique_name,open_mode,database_role,switchover_status from v$database

　　02, 查看进程

select process ,status , sequence# from v$managed_standby;

　　03,查看最后一行的归档日志

select max(sequence#),to_char(max(first_time),'yyyy-mm-dd hh24:mi:ss') from v$log_history;

　　04 主库

select DEST_NAME,STATUS,RECOVERY_MODE from v$archive_dest_status where DEST_NAME='LOG_ARCHIVE_DEST_2';

　　05,备库

select DEST_NAME,STATUS,RECOVERY_MODE from v$archive_dest_status where DEST_NAME='LOG_ARCHIVE_DEST_1';

　　看是否一样