Does Oracle share i/o load across datafiles?

Hi,
I am working with a daabase that has multiple datafiles for each tablespace. The datafiles for each tablespace are located on a single disk. I believe no stripping is present in this design.
Presently, it is recomended that the datafiles for each tablespace be spread over multiple disks. Would this help with the improvement in i/o performance to the specific tablespace?
Do I need to do any alter tablespace or datafiles to have the improvement in the i/o?
Please advice. I am using Oracle 8i.
Best Regards,
Flintz

There are several possibilities to stripe a tablespace.
You can create
a) an ORACLE Tablespace with several datafiles
b) an OS mountpoint which has striped several disks
If you've an existing tablespace and want to stripe this tablespace with ORACLE than you can create an additional tablespace wtih several datafiles which are on different disks. After this you can use
- imp/exp
- CTAS
- online redifinition
to copy the tables to the tablespace.
You should also consider that you've a less safe system if you have several disks which are not mirrored or on a RAID 5 system.

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>
By using a hex editor, a user can see or edit the raw and exact contents of a file as opposed to the interpretation of the same content that other, higher level application software may associate with the file format. For example, this could be raw image data, in contrast to the way image editing software would interpret the same file.>
Edited by: Enrique Orbegozo on Oct 21, 2008 7:20 AM
Edited by: Enrique Orbegozo on Oct 21, 2008 7:25 AM

How does oracle write to datafiles in a tablespace?

hi all
Suppose I have a tablespace consisting of two datafiles. When I need to wirte data onto it，how does ORACLE
write ? Does it initially write to the first datafile and then write to the second datafile when the first datafile getting full or write to two datafiles in an random manner?
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2 begin
3 for i in 0..99 loop
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6 commit;
7 end;
8 /
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5 1 65536
5 2 65536
5 3 65536
5 4 65536
5 5 65536
5 6 65536
5 7 65536
5 8 65536
5 9 65536
5 10 65536
5 11 65536
5 12 65536
5 13 65536
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SQL*Loader: Release 10.2.0.4.0 - Production on Thu Dec 5 04:07:32 2013
Copyright (c) 1982, 2007, Oracle. All rights reserved.
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PL/SQL Release 11.2.0.2.0 - Production
"CORE 11.2.0.2.0 Production"
TNS for Linux: Version 11.2.0.2.0 - Production
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Hi,
have you tried with the FILLER command like
LOAD DATA
INFILE xmlFileNames_Delta.txt
INTO TABLE xmlFeedDelta APPEND
fields terminated by ','
filename FILLER CHAR(4000),
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Does Oracle share i/o load across datafiles?

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