Trying to recover an standby database

Question

- Oracle 10.2.0.4 Standard Edition
- O/S: Windows Server 2003
- Phisically Standby
We have primary and a standby database. My standby database was synchronized through copying archive redo logs from Primary to Standby. They were copied every 15 min to standby server and then they were recovered from there. Because a lot of archive logs were missed for ever, now my standby database is not synchronized with my primary.
In order to recover my Standby, one week ago I followed these instructions:
Step 1: On the standby database check the current scn.
STDBY> select current_scn from v$database;
CURRENT_SCN
2527075174
Step 2: On the primary database create the needed incremental backup from the above SCN
C:\Documents and Settings\frego>rman target /
run {
allocate channel c1 type disk;
BACKUP INCREMENTAL FROM SCN 2527075174 DATABASE
format '\\srvbackup\archiveslogs-35\arch\incr_bkp_%U';
Step 3: Cancel managed recovery at the standby database
STDBY>alter database recover managed standby database cancel;
Media recovery complete.
Copied the backup files to standby server to "D:\arch\" folder.
Step 4: Catalog the Incremental Backup Files at the Standby Database
D:\arch> rman target /
RMAN> CATALOG START WITH 'D:\arch\';
Step 5: Apply the Incremental Backup to the Standby Database
RMAN> RECOVER DATABASE NOREDO;
Step 6: Put the standby database back to managed recovery mode.
STDBY>> recover managed standby database disconnect;
Media recovery complete.
Step 7: On the primary create new standby controlfile
PRIM>alter database create standby controlfile as 'C:\incr_bkp\standby01.ctl';
System altered.
Step 8: At Standby .. Replace standby controlfile at all location as shown by controle_files parameter.
Copy the standby control file to the standby site. Shutdown the standby database and replace the stanby controlfiles and restart the >standby database in managed recovery mode...
Problem was that there were new datafiles created in primary that didn't exist in standby. I had to created them manually on standby:
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB3.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB3.ORA';
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB4.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB4.ORA';
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BKP.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BKP.ORA';
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB5.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB5.ORA';
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB_A.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB_A.ORA';
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB_B.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB_B.ORA';
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB_C.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB_C.ORA';
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB_D.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_DATA\SIPESG_BLOB_D.ORA';
ALTER DATABASE CREATE DATAFILE 'D:\ORADATA\PROD\OPEXT\DATAFILES_IDX\PADRONIDX17.ORA' AS 'D:\ORADATA\PROD\OPEXT\DATAFILES_IDX\PADRONIDX17.ORA';
Also, I tried this commands:
On Standby:
RMAN> SHUTDOWN;
RMAN> STARTUP NOMOUNT;
RMAN> RESTORE STANDBY CONTROLFILE FROM 'D:\arch\standby01.ctl';
RMAN> SHUTDOWN;
RMAN> STARTUP MOUNT;
STDB> ALTER DATABASE CLEAR LOGFILE GROUP 1;
STDB> ALTER DATABASE CLEAR LOGFILE GROUP 2;
STDB> ALTER DATABASE CLEAR LOGFILE GROUP 3;
STDB> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT;
Database altered.
SQL> alter database open read only;
alter database open read only
ERROR at line 1:
ORA-01154: database busy. Open, close, mount, and dismount not allowed now
SQL> recover managed standby database cancel;
Media recovery complete.
SQL> alter database open read only;
alter database open read only
ERROR at line 1:
ORA-16004: backup database requires recovery
ORA-01152: file 1 was not restored from a sufficiently old backup
ORA-01110: data file 1: 'D:\ORADATA\PROD\OPEXT\SYSTEM01.DBF'My Questions:
- What is missing in order to open standby database?
- Can I again generate rman incremental backups on Primary (from SCN 2527075174), copy them to Standby and start recovery again? Would it generate duplicate records on tables?
- Should I generate new rman incremental backup pieces on Primary (from last SCN of Standby), copy them to standby and apply there?
Remember that my Primary is growing every day and those rman backup pieces and standby01.ctl, that are copied on my standby server, are from one week ago.
Thanks
Edited by: user521219 on 22-jun-2012 9:31

Answer 1

user521219 wrote:
Should I restart and mount my standby database again?
If I apply Step 3 now:
STB> alter database recover managed standby database cancel;
ERROR at line 1:
ORA-16136: Managed Standby Recovery not activeRefer the above mentioned link. First restore controlfile & then perform recovery on standby database.
>
user521219      
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Handle:      user521219
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Consider closing your threads and keep the forum clean.
Edited by: CKPT on Jun 22, 2012 10:43 PM