对于数据库打psu和jvm patch之后,dg备库同步会出现类似ORA-10485: Real-Time Query cannot be enabled while applying migration redo.异常

Tue Aug 15 18:48:18 2023
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT  LOGFILE DISCONNECT FROM SESSION
Attempt to start background Managed Standby Recovery process (orcl)
Tue Aug 15 18:48:18 2023
MRP0 started with pid=33, OS id=15486
MRP0: Background Managed Standby Recovery process started (orcl)
 started logmerger process
Tue Aug 15 18:48:23 2023
Managed Standby Recovery starting Real Time Apply
Parallel Media Recovery started with 80 slaves
Waiting for all non-current ORLs to be archived...
All non-current ORLs have been archived.
Recovery of Online Redo Log: Thread 1 Group 10 Seq 106115 Reading mem 0
  Mem# 0: /u01/app/oracle/oradata/orcl/std_redo10.log
Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT  LOGFILE DISCONNECT FROM SESSION
Tue Aug 15 18:49:50 2023
RFS[1]: Assigned to RFS process 16049
RFS[1]: Opened log for thread 1 sequence 106117 dbid 1490144467 branch 962363734
Tue Aug 15 18:49:50 2023
RFS[2]: Assigned to RFS process 16051
RFS[2]: Selected log 10 for thread 1 sequence 106115 dbid 1490144467 branch 962363734
Tue Aug 15 18:49:50 2023
RFS[3]: Assigned to RFS process 16053
RFS[3]: Opened log for thread 1 sequence 106116 dbid 1490144467 branch 962363734
Archived Log entry 106102 added for thread 1 sequence 106116 rlc 962363734 ID 0x58d223d3 dest 2:
RFS[3]: Opened log for thread 1 sequence 106118 dbid 1490144467 branch 962363734
RFS[2]: Opened log for thread 1 sequence 106119 dbid 1490144467 branch 962363734
Tue Aug 15 18:49:50 2023
Archived Log entry 106103 added for thread 1 sequence 106115 ID 0x58d223d3 dest 1:
Tue Aug 15 18:49:50 2023
Media Recovery Log /u01/app/oracle/fast_recovery_area/ORCLDG/archivelog/2023_08_15/o1_mf_1_106116_lfpp2ghc_.arc
Errors with log /u01/app/oracle/fast_recovery_area/ORCLDG/archivelog/2023_08_15/o1_mf_1_106116_lfpp2ghc_.arc
MRP0: Background Media Recovery terminated with error 10485
Errors in file /u01/app/oracle/diag/rdbms/orcldg/orcl/trace/orcl_pr00_15488.trc:
ORA-10485: Real-Time Query cannot be enabled while applying migration redo.
Managed Standby Recovery not using Real Time Apply
Recovery interrupted!
Tue Aug 15 18:49:50 2023
MRP0: Background Media Recovery process shutdown (orcl)

这种情况,是由于数据库在upgrade模式下产生日志无法正常被adg实时应用,我一般是临时rman应用备库日志解决,官方解决方案:MRP process getting terminated with error ORA-10485 (Doc ID 1618485.1)

11g CASE

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1> Stop DG broker (if used)
   i.e., on primary and standby

SQL> alter system set dg_broker_start = false scope = both sid = '*' ;
2> Stop managed recovery in the standby, shutdown the standby and startup mount.
    start managed recovery without real time apply.

SQL> alter database recover managed standby database disconnect ;
3> Wait until all the redo is applied to the standby and the standby is in sync.
     Do a couple of log switches on the primary, all instances if RAC, and let them apply to the standby.

4> Shutdown the standby and startup mount
   start managed recovery with real time apply.

SQL> alter database recover managed standby database using current logfile disconnect ; 
5> Restart broker(if used).

on primary and standby

SQL> alter system set dg_broker_start = true scope = both sid = '*' ;
 

12c CASE

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In 12c and later, start Archived log apply using below command with ARCHIVED LOGFILE option:

SQL> alter database recover managed standby database using archived logfile disconnect;
Wait until all the redo is applied to the standby and the standby is in sync. 
  Do a couple of log switches on the primary, all instances if RAC, and let them apply to the standby.

To stop Redo Apply, Issue the following SQL statement:
SQL>  alter database recover managed standby database cancel; 

start managed recovery with real time apply, Issue the following SQL statement

SQL> alter database recover managed standby database disconnect;