To avoid contention among disk accesses, a data dictionary LOB RDAREA should not be placed on the same disk as any other RDAREA.

The following figure shows an example of data dictionary LOB RDAREA placement.

Figure 9-9 Example of data dictionary LOB RDAREA placement (HiRDB parallel server configuration)

Relationship with data dictionary RDAREAs

A dictionary table used to manage stored procedures or stored functions can be placed in a separate data dictionary RDAREA from other dictionary tables.