New 12c Default: Controlfile Autobackup On – But only for Multitenant

This a a little discovery from my present Oracle Database 12c New Features course in Copenhagen: The default setting for Controlfile Autobackup has changed to ON – but only for Multitenant, apparently:

$ rman target sys/oracle_4U@cdb1

Recovery Manager: Release 12.1.0.1.0 - Production on Wed Sep 24 13:28:39 2014

Copyright (c) 1982, 2013, Oracle and/or its affiliates.  All rights reserved.

connected to target database: CDB1 (DBID=832467154)

RMAN> select cdb from v$database;

using target database control file instead of recovery catalog
CDB
---
YES

RMAN> show controlfile autobackup;

RMAN configuration parameters for database with db_unique_name CDB1 are:
CONFIGURE CONTROLFILE AUTOBACKUP ON; # default

Above you see the setting for a container database (CDB). Now an ordinary (Non-CDB) 12c Database:

$ rman target sys/oracle_4U@orcl

Recovery Manager: Release 12.1.0.1.0 - Production on Wed Sep 24 13:33:27 2014

Copyright (c) 1982, 2013, Oracle and/or its affiliates.  All rights reserved.

connected to target database: ORCL (DBID=1386527354)

RMAN> select cdb from v$database;

using target database control file instead of recovery catalog
CDB
---
NO

RMAN> show controlfile autobackup;

RMAN configuration parameters for database with db_unique_name ORCL are:
CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default

I really wonder why we have this difference! Is that still so with 12.1.0.2? Don’t believe it, test it! 🙂

, , ,

  1. #1 by Horia Berca on September 24, 2014 - 19:02

    Still there in 12.1.0.2

    rman target sys/welcome1@orcl

    Recovery Manager: Release 12.1.0.2.0 – Production on Wed Sep 24 13:00:19 2014

    Copyright (c) 1982, 2014, Oracle and/or its affiliates. All rights reserved.

    connected to target database: ORCL (DBID=1382119978)

    RMAN> select cdb from v$database;

    using target database control file instead of recovery catalog
    CDB

    NO

    RMAN> show controlfile autobackup;

    RMAN configuration parameters for database with db_unique_name ORCL are:
    CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default

    Thanks for the post Uwe!

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