There seems to be no defined database cache

Hello, looking at the parameters in this database there appears to be no cache. This shows that AMM is turned off but also that there is no db cache. How is cache being allocate if these are all 0? I am running Oracle 10.2.0.3 on AIX
5300-09. Are there other parameters to look at. Shouldn't db_cache_size be set to something?
sga_max_size ==> 908M
shared_pool_size ==> 252M
db_cache_size ==> 0
db_16k_cache_size ==> 0
db_2k_cache_size ==> 0
db_32k_cache_size ==> 0
db_4k_cache_size ==> 0
db_8k_cache_size ==> 0
sga_target == > 0
I just noticed that this database is using the old method:
db_block_buffers ==> 49152
Should I be setting this to 0 and using db_cache_size instead?
Thank you,
David
Edited by: JesusLuvR on Aug 5, 2009 2:58 PM

Db block buffers would be used to set the buffers within the cache.
http://download-west.oracle.com/docs/cd/B19306_01/server.102/b14237/initparams038.htm
You need to find out that why the setting of the db cache size was set to zero? Are you using any setting of VLM(Very Large Datbase) or somethng in your db?
HTH
Aman....

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Hey everyone,
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http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
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null

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