What are the implications of the definition of the db_4k_cache_size and db_16k_cache_size for other schemas?

Hi all

I have a node Oracle RAC 5 system. It's pretty tough, RAM, cpu, etc. Running on RHEL5 64 bit. I have a block size of 8K.

I have a COTS application that is wanting to pay 128 M for 4K and 16K cache sizes...

I have never before worked with databases of the combination block size... setting of these parameters, are there any impacts or implications on I need to study, especially considering that there are a number of other schemes for many other applications that already use this system of database?

Links for reading and suggestions would be helpful.

I found this: http://docs.oracle.com/cd/B12037_01/server.101/b10755/initparams035.htm but it is hardly useful to know what impact this could have other applications that use the database.

Thank you in advance,

Cayenne

I have never before worked with databases of the combination block size... setting of these parameters, are there any impacts or implications on I need to study, especially considering that there are a number of other schemes for many other applications that already use this system of database?

.

My understanding is that objects of tablespaces with different block sizes will succeed only if you have already configured the db_cache_size and at least one

DB_nK_CACHE_SIZEinitialization parameter.  As jgarry says there would be performance-related.  Oracle documentation "large cache sizes usually reduces the number of disk reads and writes. However, a large cache can take too much memory and induce memory paging or Exchange"

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