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Oracle Disk I/O Tuning

Chapter 5:

ASM Files

As the database requests, ASM will create the required files. ASM assigns each file a fully qualified name ending in a dotted pair of numbers. You can create more user-friendly alias names for the Automated Storage Management filenames by using ASM aliases.

Query the v$osm_alias data dictionary view to see assigned alias names for ASM files. During normal operations, users do not need to be aware of ASM file names. The contents of the v$osm_alias view are shown in Table 5.2.

COLUMN NAME NULL? TYPE
NAME   VARCHAR2(48)
GROUP_NUMBER   NUMBER
FILE_NUMBER   NUMBER
FILE_INCARNATION   NUMBER
ALIAS_INDEX   NUMBER
ALIAS_INCARNATION   NUMBER
PARENT_INDEX   NUMBER
REFERENCE_INDEX   NUMBER
ALIAS_DIRECTORY   VARCHAR2(1)
SYSTEM_CREATED   VARCHAR2(1)

 

Table 5.2 Contents of the v$osm_alias View


The above text is an excerpt from:

Oracle Disk I/O Tuning
Disk IO Performance & Optimization for Oracle Databases

ISBN

0-9745993-4-4 

by Mike Ault
 


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