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Oracle® Database 10g Insider Solutions by Richard Stroupe, John Kanagaraj, Arun Kumar R.

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Prerequisites for Using ASM

This section looks at the prerequisites for using ASM and how it works in the database. Oracle Database 10g needs a separate smaller database instance (in a separate ORACLE_HOME) for ASM administration. This is created during the database setup and is known as an ASM instance. This instance manages the metadata needed to make ASM files available to regular database instances. ASM instances and database instances have access to a common set of disks called disk groups. Database instances communicate with the ASM instance to get information about the layout of ASM files and access its contents directly.

The ASM instance should be started first to create a database that will use ASM. An ASM instance can be shared by several ...

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