DataGuard 备库startup报错ORA-10458

    前一天在客户现场部署完DG，同步正常，第二天早上再次查看同步的时候，发现备库的节点一是关闭状态，节点二是mount状态，启动节点一的时候报如下错误：

    [oracle@rac1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Wed Aug 8 01:48:31 2018

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup

ORACLE instance started.

Total System Global Area 7482626048 bytes

Fixed Size                  2267792 bytes

Variable Size            2768242032 bytes

Database Buffers         4697620480 bytes

Redo Buffers               14495744 bytes

Database mounted.

ORA-10458: standby database requires recovery

ORA-01196: file 1 is inconsistent due to a failed media recovery session

ORA-01110: data file 1: '+DBNMS_DATA01/dbnmsdg/datafile/system.361.983530577'

    尝试自动同步日志也失败

SQL> alter database recover managed standby database using current logfile disconnect;

Database altered.

SQL> alter database recover managed standby database cancel;

Database altered.

SQL> alter database open;

alter database open

*

ERROR at line 1:

ORA-10458: standby database requires recovery

ORA-01196: file 1 is inconsistent due to a failed media recovery session

ORA-01110: data file 1: '+DBNMS_DATA01/dbnmsdg/datafile/system.361.983530577'

    SQL> SELECT SWITCHOVER_STATUS FROM V$DATABASE;

SWITCHOVER_STATUS

--------------------

NOT ALLOWED

    后来在排查的时候，发现是监听停了，应该是系统重启或异常导致的，重启监听，开启MRP进程，尝试让其自动同步

SQL> recover managed standby database using current logfile disconnect;

Media recovery complete.

SQL> 

SQL> SELECT al.thrd "Thread", almax "Last Seq Received", lhmax "Last Seq Applied" 

     FROM (select thread# thrd, MAX(sequence#) almax 

FROM v$archived_log 

WHERE resetlogs_change#=(SELECT resetlogs_change# FROM v$database) GROUP BY thread#) al, 

  (SELECT thread# thrd, MAX(sequence#) lhmax 

FROM v$log_history 

WHERE resetlogs_change#=(SELECT resetlogs_change# FROM v$database) GROUP BY thread#) lh 

WHERE al.thrd = lh.thrd; 

Thread Last Seq Received Last Seq Applied

---------- ----------------- ----------------

1             15633            15600

2             33892            33822

SQL> /

Thread Last Seq Received Last Seq Applied

---------- ----------------- ----------------

1             15633            15600

2             33892            33822

    在主库查看seq号等他全部同步完全

SQL> 

SQL> archive log list

Database log mode              Archive Mode

Automatic archival             Enabled

Archive destination            USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence     15633

Next log sequence to archive   15634

Current log sequence           15634

SQL> 

    查看同步完成，取消同步，然后恢复，再次打开数据库，正常打开。

SQL> /

    Thread Last Seq Received Last Seq Applied

---------- ----------------- ----------------

1             15633            15633

2             33892            33892

    SQL> recover managed standby database cancel;

Media recovery complete.

    SQL> 

    此时可以正常打开数据库了 

     SQL> alter database open ;

        Database altered.

    SQL> 

    SQL> recover managed standby database using current logfile disconnect; 

Media recovery complete.

     SQL> 

    查询同步状态，处于applying_log状态

     SQL> select PROCESS,PID,STATUS, GROUP# , RESETLOG_ID,THREAD#,SEQUENCE# from v$managed_standby where process='MRP0';

PROCESS          PID STATUS       GROUP#                                   RESETLOG_ID    THREAD#  SEQUENCE#

--------- ---------- ------------ ---------------------------------------- ----------- ---------- ----------

MRP0            2336 APPLYING_LOG N/A                                        964606422          2      33894