VERITAS Storage Foundation 4.1 for Oracle RAC HP Serviceguard Storage Management Suite Extracts, December 2005

Oracle File Mapping (ORAMAP)
◆ Subelement components
A mapping subelement component describes the link between an element and the
next element in the I/O stack. The subelement component contains the subelement
number and size, as well as the element name for the subelement and element offset.
Subelement components are exported to the user through v$map_subelement.
These four types of mapping components describe the mapping information for an Oracle
instance.
Storage Mapping Views
The mapping information that is captured appears in Oracle dynamic performance views.
Review the brief descriptions of these views below; refer to Oracle documentation for
details.
View Description
V$MAP_LIBRARY Contains a list of all mapping libraries dynamically
loaded by the external process.
V$MAP_FILE Contains a list of all file mapping structures in the
shared memory of the instance.
V$MAP_FILE_EXTENT Contains a list of all the file extent mapping
structures in the shared memory of the instance.
V$MAP_ELEMENT Contains a list of all the element mapping structures
in the SGA of the instance.
V$MAP_EXT_ELEMENT Contains supplementary information for all element
mapping structures.
V$MAP_SUBELEMENT Contains a list of all subelement mapping structures
in the shared memory of the instance.
V$MAP_COMP_LIST Describes the component list associated with the
element name.
V$MAP_FILE_IO_STACK Contains the hierarchical arrangement of storage
containers for the file. This information appears as a
series of rows. Each row represents a level in the
hierarchy.
158 VERITAS Storage Foundation for Oracle RAC Installation and Configuration Guide