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Have tested. Nothing. It will probably bark because its in Recovery mode.
But you need to do a shutdown, then a startup mount and the start apply again.
So no action is required if you do this ( above ). If you shutdown apply and open it then you need to shutdown and restart mount and restart apply.
/home/oracle:STANDBY >sqlplus " / as sysdba" SQL*Plus: Release 220.127.116.11.0 Production on Wed Oct 24 16:04:54 2012 Copyright (c) 1982, 2010, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 18.104.22.168.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> alter database open; alter database open * ERROR at line 1: ORA-10456: cannot open standby database; media recovery session may be in progress SQL>
A good example is active Data Guard :
Edited by: mseberg on Oct 24, 2012 4:10 PM
951368,what will happen if physical standby database is opened when in standby role plus primary is opened?>
well,It will not open your standby until you dont run the command like "alter database recover managed standby database cancel;"
and if he/she cancelling the log apply obviously standby will no more in receiving apply logs .
what do we need to do to get back the data guard configuration?,we need to just much neither need to shut down the db ,run the below command only:
alter database recover managed standby database using current logfile disconnect ; or alter database recover managed standby database disconnect ;
The standby will open read only (see v$database.open_mode.) Redo will continue to be recieved but will not be applied (see the transport lag and apply lag in v$dataguard_stats). If you then start redo apply, you will be enabling Active Data Guard Real Time Query, which does require a separate licence.