Oracle - Explain how to convert a single instance database to RAC posted by
Babu Kunwar
Explain how to convert a single instance database to RAC
There are multiple ways in Oracle 10gR2 to convert a single instance database
into a clustered database. We can use the following methods to do this:
-
Dbca
-
enterprise manager
-
rconfig utility
Check if operating system requirements are met you can choose either of these
methods to do the conversion. Also the hardware and software system is
supported. DBCA does most of the tasks of the conversion automatically whereas
grid control provides full support to the conversion process.
Rconfig is a utility which is located in $ORACLE_HOME/bin.
It uses a file called
$ORACLE_HOME/assistants/rconfig/sampleXMLs/ConvertToRAC.xml which we need to
edit in order to adjust some parameters as needed and then save it under a new
name. It contains the parameter for verifying convert options which accepts
three different values for example to understand:
-
CONVERT VERIFY= “YES”. If yes it performs checks to make sure everything is in
place before starting the conversion.
-
CONVERT VERIFY= “NO”. If NO it starts conversion right away without checking
the prerequisits.
-
CONVERT VERIFY= “ONLY”. If equals to ONLY then it only performs the
prerequisits-check.
You then call the utility and hand over your modified xml file: $ rconfig
my_db_conversion_file.xml.
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