Protocol used by Oracle RMAN to communicate with auxiliary

oraclerman

What protocol is used by RMAN to communicate with the server used for backing up/restoring data?

I searched everywhere but couldn't find any docs with this information.

Background: I am developing a proxy that backs up an oracle database to a different store

Best Answer

The thing you are looking for is called the SBT API. I can't find any free documentation on it, but the process is that a vendor of say a tape library implements the functions of SBT (e.g. sbtopen(), sbtwrite() and so on), compiles them as a shared library (a .so file) and this is placed in the ORACLE_HOME. When RMAN starts it looks for a file called libobk.so and dynamically links to it. RMAN then calls the functions, and in turn the protocol between the MML (media management layer) and the actual hardware e.g. a tape library, is proprietary.

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Oracle – Need help with RMAN Active Duplication on Windows 32 bit to a 64 bit

You have to initiate the duplicate from the target database to be able to connect to the not mounted target database. I suggest you to downgrade the oracle version on the 64 bit machine. The easiest way to do this will be to install 11.1.0.6.0 version on the 64-bit server into a separate oracle home and perform the duplicate. You can upgrade the database after duplicate and switch it to the 11.1.0.7.0 home.

The error you are getting on the 32-bit database seems to be a connection problem to the database. The target instance is not mounted and you cannot connect to is via SQLnet.

When performing the duplicate form 64 bit system, please make sure that you are using username/password in the connection string to the target database and not the system authentication.

Best regards, Yuri

Duplicating a Database with RMAN

If my source database uses SPFILE then do I have create a PFILE from the SPFILE?

Yes, you need to create a temporary PFILE to use while duplicating the database. You will later switch the new instance to use the SPFILE.

Use

CREATE PFILE = 'path/to/pfile' FROM SPFILE;

You only need to create directories that are referenced in the PFILE or SPFILE. Which directories need to be created?

You will start the database as NOMOUNT to begin the duplication. This means the controlfiles will not be read, and so you don't need to have the directories in which the datafiles reside present in your new host. However, the directories references in the parameter files must be present. From your transcript,

DB11G.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
*.audit_file_dest='/u01/app/oracle/admin/DB11G/adump' 
*.control_files='/u01/app/oracle/oradata/DB11G/control01.ctl','/u01/app/oracle/oradata/DB11G/control02.ctl'#Restore Controlfile
*.db_recovery_file_dest='/u01/app/oracle/fra'
*.diagnostic_dest='/u01/app/oracle'
*.log_archive_dest_1='location=/u01/app/oracle/archive_logs'

You may find this chapter of the documentation useful: http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmdupdb.htm#i1006474

Best Answer

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Oracle – Need help with RMAN Active Duplication on Windows 32 bit to a 64 bit

Duplicating a Database with RMAN

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