"recover database until cancel" asks for archive log file that do not exist

[Former Member]

Hello,

Oracle Release : Oracle 10.2.0.2.0

Last week we performed, a restore and then an Oracle recovery using the recover database until cancel command. (we didn't use backup control files) .It worked fine and we able to restart the SAP instances. However, I still have questions about Oracle behaviour using this command.

First we restored, an online backup.

We tried to restart the database, but got ORA-01113,ORA-01110 errors :

sr3usr.data1 needed media recovery.

Then we performed the recovery :

According Oracel documentation, "recover database until cancel recovery" proceeds by prompting you with the suggested filenames of archived redo log files.

The probleme is it prompts for archive log file that do not exist.

As you can see below, it asked for SMAarch1_10420_610186861.dbf that has never been created. Therefore, I cancelled manually the recovery, and restarted the database. We never got the message "media recovery complete"

ORA-279 signalled during: ALTER DATABASE RECOVER LOGFILE '/oracle/SMA/oraarch/SMAarch1_10417_61018686

Fri Sep 7 14:09:45 2007

ALTER DATABASE RECOVER LOGFILE '/oracle/SMA/oraarch/SMAarch1_10418_610186861.dbf'

Fri Sep 7 14:09:45 2007

Media Recovery Log /oracle/SMA/oraarch/SMAarch1_10418_610186861.dbf

ORA-279 signalled during: ALTER DATABASE RECOVER LOGFILE '/oracle/SMA/oraarch/SMAarch1_10418_61018686

Fri Sep 7 14:10:03 2007

ALTER DATABASE RECOVER LOGFILE '/oracle/SMA/oraarch/SMAarch1_10419_610186861.dbf'

Fri Sep 7 14:10:03 2007

Media Recovery Log /oracle/SMA/oraarch/SMAarch1_10419_610186861.dbf

ORA-279 signalled during: ALTER DATABASE RECOVER LOGFILE '/oracle/SMA/oraarch/SMAarch1_10419_61018686

Fri Sep 7 14:10:13 2007

ALTER DATABASE RECOVER LOGFILE '/oracle/SMA/oraarch/SMAarch1_10420_610186861.dbf'

Fri Sep 7 14:10:13 2007

Media Recovery Log /oracle/SMA/oraarch/SMAarch1_10420_610186861.dbf

Errors with log /oracle/SMA/oraarch/SMAarch1_10420_610186861.dbf

ORA-308 signalled during: ALTER DATABASE RECOVER LOGFILE '/oracle/SMA/oraarch/SMAarch1_10420_61018686

Fri Sep 7 14:15:19 2007

ALTER DATABASE RECOVER CANCEL

Fri Sep 7 14:15:20 2007

ORA-1013 signalled during: ALTER DATABASE RECOVER CANCEL ...

Fri Sep 7 14:15:40 2007

Shutting down instance: further logons disabled

When restaring the database we could see that, a recovery of online redo log has been performed automatically, is it the normal behaviour of a recovery using "recover database until cancel" command ?

Started redo application at

Thread 1: logseq 10416, block 482

Fri Sep 7 14:24:55 2007

Recovery of Online Redo Log: Thread 1 Group 4 Seq 10416 Reading mem 0

Mem# 0 errs 0: /oracle/SMA/origlogB/log_g14m1.dbf

Mem# 1 errs 0: /oracle/SMA/mirrlogB/log_g14m2.dbf

Fri Sep 7 14:24:55 2007

Completed redo application

Fri Sep 7 14:24:55 2007

Completed crash recovery at

Thread 1: logseq 10416, block 525, scn 105140074

0 data blocks read, 0 data blocks written, 43 redo blocks read

Thank you very much for your help.

Frod.

[former_member204746]

if recovery information needed are in the online redologs, I do not see any problems.

[Former Member]

Thank you for anwering.

The problem isthat didn't get the message "media recovery complete", it is only when the database was restarted that the recovery was terminated.

While performing the recovery, is it possible to locate which online redolog is needed, and then to apply the changes in these logs ?

[stefan_koehler]

Hi,

>> While performing the recovery, is it possible to locate which online redolog is needed, and then to apply the changes in these logs ?

No (and yes in case of a redolog dump) you have to test it, if oracle suggests a archive number that you don't have you need to specify the online redolog files.

But if you have the "original" controlfile - why do you made a "recover database until cancel".

You will do a complete recovery... and you don't using a backup control file / recreated controlfile ... so you can perform a normal "recover database".

Regards

Stefan

[madhukara_shenoy]

Hi,

Let me answer your query.

=======================

Your question: While performing the recovery, is it possible to locate which online redolog is needed, and then to apply the changes in these logs

1. When you have current controlfile and need complete data (no data loss),

then do not go for until cancel recovery.

2. Oracle will apply all the redologs (including current redolog) while recovery

process is on.

3. During the recovery you need to have all the redologs which are listed in the view V$RECOVERY_LOG and all the unarchived and current redolog. By querying V$RECOVERY_LOG you can find out about the redologs required.

4. If the required sequence is not there in the archive destination, and if recovery process asks for that sequence you can query V$LOG to see whether requested sequence is part of the online redologs. If yes you can mention the path of the online redolog to complete the recovery.

Hope this information helps.

Regards,

Madhukar