RE: Oracle/Windows question

oracle-l-bounce_at_freelists.org gravou em 2005-08-12 17:06:34:

> A few more questions: Would the size of the data set being operated on
> have any bearing on the memory usage?

        Yes, within the bounds of the configuration you did.

        That is, with less memory there'll be less cache, less buffers, and consequently more disk accesses.

> I saw on Metalink Note:271072.1 that the init.ora processes has no
> impact on this situation because it doesn't take in any resources.
> Agreed?

        Actually, this note is about listeners. init.ora configures the server. So you can allocate enough in init.ora that you won't get all the listeners you want.

> If my best immediate solution is to reduce the size of the SGA and I
> have these values set (I inherited this db so can't address why values
> where changed):

> shared_pool_size = 300000000 #previous value: 40000000
> shared_pool_reserved_size = 3000000 #previous value: 2000000
> log_buffer = 1048576 #previous value: 163840

> any idea where I might get the most "bang for the buck"?

        You must monitor for your specific situation... but the biggest influence in SGA is db_cache_size.

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