For better performance and reliability on production databases, use raw disk partitions.
Only an experienced system administrator should create chunk files. Do not create chunk files on an NFS-mounted partition.
The default space required for the root, temp, and log dbspaces is about 1 MB per user. For the root dbspace the default space required is at least 60 MB, and for the ccm dbspace it is about 2 MB per user. For the default 40 users, the total is about 220 MB. This estimate is only a rough estimate for the initial database chunk. Allocate dbspace generously to permit future growth.
No action is necessary on your part to use cooked files (for example, set up a file system).
Use the estimates shown to allocate disk space for cooked chunk files:
40 users (default) 220 MB
This section summarizes how to set up a raw partition on a new, blank disk that has been formatted. (New disks typically are formatted by their manufacturers.)