RCONFIG is a non interactive command line utility for converting a Single-Instance database to RAC database.It is installed by default as a executable file under $GRID_HOME/bin and $ORACLE_HOME/bin. It takes XML file as input and process the conversion procedure.
Benefits of using RCONFIG :
- It’s very light and easy to use utility for conversion of Single Instance database to RAC database .
- We do not need to do additional configuration , as it comes by default.
- It also provide testing capabilities in advance without actually converting it into RAC.
- It is fully automated conversion process.
- It has ability to migrate non-ASM DB to ASM file-system
- It creates RAC DB instance on all the specified nodes.
- It registers CRS resource to the cluster.
- It startup RAC database instances on the specified nodes.
Disadvantage of using RCONFIG :
- Database downtime is required , as it restarts your database several times.
Prerequisites of using RCONFIG
- Before using RCONFIG to convert your Single Instance database to RAC db , ensure the clusterware is configured and it is up and running on the nodes.
- Ensure the clusterware is configured, up and running on the nodes.
- Oracle RDBMS binaries for RAC must be installed.
- We need Active ASM instance across the nodes.
- Before using RCONFIG , we need to create and mount required ASM diskgroups.
- Stand alone database running on one of the local node
- Stand alone db and RAC must be of same db versions.
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