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Restore using brtools fail due to missing control files

Posted on Jun 08, 2011 at 12:13 PM 361 Views

Good day

i am trying to perform a restore an SAP Oracle 10 database using brtools and backint. I do not have the control files on disk. In brtools I used option 5 - Restore and recovery., then option 7 - Disaster recovery. I restore the profiles and log files from BRBACKUP backup. The option to restore the control file copy here is locked out. From the BRBACKUP logs I see the control file is being backed up though.

I then restore the profiles and log files from BRARCHIVE backup - it is possible here to restore the control file copy. The problem is that the control file was not backed up by BRARCHIVE - it does not show it in the logs either.

When I therefore choose option 1 - Complete recovery, the first task is to check the database files. The brtools utility stops because it does not find the control files.

how do I restore the control files?

Thanks

Wilhelm

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  • author's profile photo Former Member
    Former Member
    Posted on Jun 08, 2011 at 12:35 PM
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    Good day

    >

    > i am trying to perform a restore an SAP Oracle 10 database using brtools and backint. I do not have the control files on disk. In brtools I used option 5 - Restore and recovery., then option 7 - Disaster recovery. I restore the profiles and log files from BRBACKUP backup. The option to restore the control file copy here is locked out. From the BRBACKUP logs I see the control file is being backed up though.

    >

    > I then restore the profiles and log files from BRARCHIVE backup - it is possible here to restore the control file copy. The problem is that the control file was not backed up by BRARCHIVE - it does not show it in the logs either.

    >

    > When I therefore choose option 1 - Complete recovery, the first task is to check the database files. The brtools utility stops because it does not find the control files.

    >

    > how do I restore the control files?

    >

    > Thanks

    > Wilhelm

    Hi Wilhelm,

    I assume that you are restoring the database into the same location. At this stage, you should check two foremost items, below;

    1) Oracle datafiles

    2) Offline redolog files

    If restored those files respectively, you can create a new controlfile and start your database respectively.

    Best regards,

    Orkun Gedik

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    • Former Member
      Jun 08, 2011 at 12:45 PM

      I copied the procedure from my previous [answer|restore and apply online redologs into different directory;;

      1) Create control.sql by executing the command at the productive system, below;

      alter database backup controlfile to trace resetlogs;

      2) Goto "/oracle/<SID>/saptrace/usertrace" and open newly created trace file,

      3) Copy lines between "STARTUP NOMOUNT" and "-- Commands to re-create incarnation table" strings. Please note that these strings will not be included, just between of them

      4) Create a control.sql file by ora<sid> user and paste the SQL statement, at the 3rd step

      5) Now, you can change all the paths, regarding your needs in the file

      6) Now that you have a control.sql file, then you can create the control files,

      7) Delete all control files on the database. They have been determined in the SPFILE or init<SID>.ora file.

      8) On ora<sid> user

      a) sqlplus u201C/as sysdbau201D

      b) startup nomount

      c) @<path>\control.sql

      d) shutdown

      9) Now apply the online redolog files;

      a) startup mount

      b) recover database using backup controlfile until cancel;

      c) alter database open resetlogs;

      d) shutdown

      e) startup

      f) exit

      Best regards,

      Orkun Gedik

  • author's profile photo Former Member
    Former Member
    Posted on Jun 09, 2011 at 05:50 AM
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    Dear Wilhelm,

    5 Restore and recovery

    then

    4 Whole database reset

    will do it all.

    Kind regards,

    Gerd

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