growth of data files
Hello11 GR 2, OS is not serious, the DSO is excluded in this case - only FS
I wonder what the algorithm behind the growth of the data files that belong to a tablespace, but for example for performance reasons, are placed on 2 different physical volumes.
Do you know if the Oracle Server always takes advantage of spread of these files?
What happens if we only have one huge table? -It spreads extended this tables consistently in these 2 data files?
example:
my_huge_table is located in the USERS tablespace which consists of 2 data files:
e:\users1.dbf
f:\users2.dbf
My observation is that it is not expected that users evaluations1 is filled and using the file mobiles2 in parallel. However I don't know if it is reliable where performance is concerned. Please share your verified knowledge.
When you add a second data file to a tablespace after segments have already allocated punctuated in the first data file - these extensions will remain in the first data file - there is no measure of rebalancing mechanism on this layer. The new data file will then prefer to allocate extensions, if, so sooner or later, the two data files will have a fill. This behavior is independent of the type of storage to that of data files.
Kind regards
Uwe Hesse
http://uhesse.WordPress.com
Tags: Database
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BANNER
----------------------------------------------------------------
Oracle Database 10 g Enterprise Edition release 10.2.0.3.0 - 64bi
PL/SQL version 10.2.0.3.0 - Production
CORE Production 10.2.0.3.0
AMT for IBM/AIX RISC System/6000: Version 10.2.0.3.0 - production
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------------------------------------ ----------- ------------------------------
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---------------
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Ms. KHello
This will be fine? I'm planning that each data files will be a uniform size of 11g.
Yes, it should be OK.
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