Restore Procedure - online backup

Question

Dear all,
Our BI QA system got crashed and hence we need to restore the SAP on
the same machine , we have online backup.
Can any advise on the restore & recovery methods with the online backup.
Kindly provide Restore Steps .
Kindly suggest
Thanks & Regards,

Answer 1

1: stop the database and SAP services running under <sidadm> and <orasid> users.
2: Empty your sapdatas
     u2022 cd /oracle/<SID>
     u2022 rm u2013r sapdata*
3:  Delete control files from all of its three locations (whereever presents)
     u2022 cd /oracle/<SID>/cntrl
     u2022 rm *.dbf
4: confirm the name and presence of online backup logfile ( *.anf ) in sapbackup dir.
   and same for arch<SID>.log in saparch dir.
5: Start restore on targetsystem in the foreground with:
     u2022     su u2013 ora<sid>
     u2022     for normal restore: brrestore -r init<source sid>.utl -b <backupfile> -m full u2013c
   or Start restore in the background with:
     u2022     as root
     u2022     at now
          su u2013 ora<sid> -c u201Cbrrestore -r init<source sid>.utl -b <backupfile>-m full u2013c forceu201D
          ^D
6: Once restore finishes, do not open the database. Start the database in mount state and apply the redologs till the
time you want the recovery of database or else
  you must recover the database till the end time of databse backup as you have online backup only with you.
==> for end time of backup, check the *.anf file.
before starting recovery, make sure archive logs are available with you.
Syntax
sqlplus> recover database using backup controlfile until cancel;
or
sqlplus> recover database until time '2010-03-02:10:00:00' using backup controlfile;
First check if we can stop and start the system without problems.
Sqlplus> shutdown immediate
Sqlplus> startup
Also check the alert_SID.log for any errors.
7: once database recovery finishes, you may open the database and start SAP applications.
Cheers !!!
Ashish