Database restore problem with BRTOOLS

Question

Hi Experts,
I am tring to migrate an SAP system from host A to host B.
OS: windows server 2003 DB: oracle 10g
Homogeneous migration.
The database were backed up with BRTOOLS (whole database offline backup) to Location L:\QCO_BCK @hostA
After that I moved folder QCO_BCK together with folder "sapbackup" from hostA to hostB, placed under F:\QCO_BCK
And then start to perform "whole database reset" with BRTOOLS, but BRTOOLS can not verify the datafile/control files since they are under different location(hostA and hostB), So, I modified initQCO.ora and the BRTOOLS log file begprhrg.afd, all the relevant directories were changed from L:\ to F:\, after trying again, BRTOOLS performed well, all datafiles, redo logs, control files were copied to the right location, but problems encountered at step 7 - "open database and post-processing", BRTOOLS returns oracle error message:
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: 'H:\oracle\QCO\sapdata5\system_1\SYSTEM.DATA1'
database can be mounted but can not be open.
I think this is because the control file is the old one which records the old file locations in hostA, in hostA, file SYSTEM.DATA1 actually located under H:\ but in hostB, it is copied under D:\
My question is:
1.  Is it obligatory by BRTOOLS that the file structure on hostB(new) must be totally the same as hostA(old)? if the file (for example) SYSTEM.DATA1 is located at H:\ of hostA, then, in new hostB, it must be located at the same directory H:\?
2. Is there any workaround to open the database in this situation? like modifing the control file?
Thank you in advance.
Freshman

Answer 1

Hi Sunny and Juan,
Thanks so much for your valuable information for me.
Yes, before restoring the DB, I used oraBRCopy tool to generate CONTROL.SQL and CONTROL.TRC file. But I didn't execute CONTROL.SQL after that. I'd like to know which timepoint should I execute it to generate the new control file? (file directory had already been corrected within CONTROL.SQL). is it before doing step 7: open database and post-processing, I should open a new command windows to enter SQLPlus to execute CONTROL.SQL? I tried to do this:
SQL>conn / as sysdba
Connected to an idle instance.
SQL>@C:\CONTROL.SQL
Oracle instance started
Total system global area xxx bytes
Fixed size xxx
varianble size xxx
Control file created.
SQL>alter database open;
alter database open
Error at line 1
ORA-01589 must use RESETLOGS or NORESETLOGS option for database open.
SQL>alter databse open resetlogs;
Error at line 1
ORA-01092: oracle instance terminated.Disconnected forced.
Strange thing is, in my last trial, when I execute step 7: open database and post processing, BRRECOVER gives me two sub options:
1 ~ Reset logs option (reset_logs) ..[resetlogs]
2 * Open databse command (command) .[alter database open resetlogs]
the final result is:
ORA-01139: Resetlogs option only valid after and incomplete database recovery.
I am not familiar with oracle db and is totally confused/frastrated now... Please kindly help.
Thank you very much
Freshman