How can i to change parameters db_writer_processes

deal all,
db_writer_processes,the value of the parameters is default 1,I want to change it, and want to know what value is the best?

Aman.... wrote:
Well, the parameter can be changed by the alter system but why you want to do it? Why you want to enable more dbwr;s in the first place?
Aman....I want to change the value more than 1 and improve the dbwr efficiency? but I don't know wether can do this.

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