For file_mapping

i want to know what is file_mapping?
why we use this and wht is this for?
if we make it TRUE then is there any changes happen? in DB??
We are using 11G DB.
please reply.
thanks in advance..

piku wrote:
i want to know what is file_mapping?
why we use this and wht is this for?
if we make it TRUE then is there any changes happen? in DB??
We are using 11G DB.
please reply.
thanks in advance..Check the following links:
http://download.oracle.com/docs/cd/E11882_01/server.112/e17110/initparams088.htm#REFRN10060
http://download.oracle.com/docs/cd/E11882_01/server.112/e17120/dfiles009.htm#ADMIN11452
http://www.ordba.net/Ora10g/DF_FileMapping.htm
Kamran Agayev A.
Oracle ACE
My Oracle Video Tutorials - http://kamranagayev.wordpress.com/oracle-video-tutorials/

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__db_cache_size     1073741824
__java_pool_size     67108864
__large_pool_size     318767104
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optimizercost_based_transformation     OFF
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asm_diskstring
asm_power_limit     1
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audit_sys_operations     FALSE
audit_trail     NONE
background_core_dump     partial
background_dump_dest     /dborafiles/orbit/ORBIT01/admin/bdump
backup_tape_io_slaves     TRUE
bitmap_merge_area_size     1048576
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cluster_database     TRUE
cluster_database_instances     3
cluster_interconnects
commit_point_strength     1
compatible     10.1.0
control_file_record_keep_time     90
control_files     #NAME?
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cursor_space_for_time     FALSE
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db_2k_cache_size     0
db_32k_cache_size     0
db_4k_cache_size     0
db_8k_cache_size     0
db_block_buffers     0
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db_create_online_log_dest_2     #NAME?
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db_file_name_convert
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nls_language     ENGLISH
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