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Oracle10g Grid Computing with RAC
Chapter 8 - RAC Administration

ASM Related Initialization Parameters

Parameters                                            Description


This parameter (where "n" is replaced with 1-5) allows you to specify the disk group where redo logs will be created. For example specifying: +dgroup7, places the log files in ASM disk group dgroup7.

Table 8.4 ASM Initialization Parameters

By using the db_create_file_dest and db_recovery_file_dest parameters you tell ASM on which disk groups to place the database datafiles and recovery area. This allows you to simply specify create tablespace test; and the database and ASM will create a 100 megabyte file within the db_create_file_dest location, automatically striped and load balanced.

Initialization Parameters for ASM Instances

The initialization parameters in Table 8.5 relate only to an ASM instance, there will be at least one ASM instance per node in a RAC cluster. Parameters that start with ASM_ cannot be set in a normal database instance, although they will be present to the show parameter command.




In order to set the ASM_ parameters this parameter must be set to INSTANCE_TYPE = ASM. Note: This is the only required parameter. All other parameters take suitable defaults for most environments.


This parameter specifies the unique name for this group of ASM instances within the cluster or on a node. This parameter defaults to +ASM and only needs to be modified if you are trying to run multiple ASM instances on the same node.

The above text is an excerpt from:

Oracle 10g Grid & Real Application Clusters
Oracle 10g Grid Computing with RAC
ISBN 0-9744355-4-6

by Mike Ault, Madhu Tumma


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