Two basic questions on Physical Standby

Question

DB version: 10.2.0.5
OS : Solaris
Question1.
This is how one mounts a Standby Database. Right?
$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.5.0 Production on Thu Dec 16 13:16:33 2011
Copyright (c) 1982, 2010, Oracle.  All rights reserved.
Connected to an idle instance.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 1436819456 bytes
Fixed Size                  2158344 bytes
Variable Size             855642360 bytes
Database Buffers          570425344 bytes
Redo Buffers                8593408 bytes
SQL> alter database mount standby database;
Database altered.Question2.
Once MOUNTED (using the above command), the standby database will be in a consistent state of recovery automatically by applying the shipped archive logs. Right ?
Or , do we have to explicitly issue the below command on a regular basis to apply the shipped archived redo logs to make it Sync with the primary DB ?
recover standby database;

Answer 1

Hello;
Assuming you are using SQL you would start the Standby mount :
  SQL>startup mount;You can start the Redo Apply runs as a foreground session or as a background process :
Foreground :
  SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE;
Background :
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT;You have to do this each time you bounce the Standby database. If everything is working ( Network etc the redo will start to apply )
To stop redo apply issue :
SQL>ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;You may find these two simple queries from the Primary helpful :
clear screen
set linesize 100
column STANDBY format a20
column applied format a10
SELECT 
   NAME AS STANDBY,
   SEQUENCE#,
   APPLIED,
   COMPLETION_TIME
FROM
   V$ARCHIVED_LOG
WHERE 
   DEST_ID = 2
AND
   NEXT_TIME > SYSDATE -1;
SELECT
  MAX(SEQUENCE#)
FROM
  V$ARCHIVED_LOG
WHERE
  NEXT_TIME > SYSDATE -1;Best Regards
mseberg