I have the requirement to set the db_block_size to 16k. I wrongly created a database with default 8k block and I need to recreate it with 16k block. When I try DBCA, it shows me block size as 8k and doesn't let me change it (doesn't accept the input). Any help is appreciated. It is 10gR2 on Dell PowerEdge 2950/Linux AS-4 U4.