I have few doubts about Oracle Block size and OS block size.
Typically, we will set the OS block size as Oracle block size. Solaris supports two block sizes. One is 4k another is 8k, default is 8k. If i go for Transaction processing database, i will have to set db_block_size as 4k. When OS is 8k size. For one OS write, Oracle will have to write twice. There will be performance issue on this.
If, this is the case. Generally, any Unix installation will go with default BLOCK size. SUN and Oracle is working closer. Suppose, i want to go for TRANSACTION processing type.
What should be my block size, when OS block size is 8k.