Setting up z/OS Unicode Services for DB2 for z/OS
DB2® for z/OS® uses z/OS Unicode Services to perform character conversions and case conversions. You should set up z/OS Unicode Services specifically for DB2 for z/OS to ensure optimal DB2 performance.
About this task
z/OS Unicode Services uses a conversion image to determine how to handle various conversions. The conversion image tells z/OS Unicode Services which conversion tables to load and use for character and case conversions. This task explains how to set up such a conversion image. Starting in z/OS 1.7, if at any time DB2 needs a conversion that is not in your image, z/OS Unicode Services loads it on demand.
Tip: Even
though you are not required to create your own conversion image, do so anyway by performing the steps in this task. DB2 for z/OS requires
that certain conversions be available before it can start. When you
define your own conversion image, as described in this task, those
conversions are loaded when z/OS is IPLed
and are available when DB2 starts.
Otherwise, DB2 might be suspended
by z/OS multiple
times during startup as each of the required conversion tables is
loaded by z/OS on demand.
Procedure
To set up z/OS Unicode Services:
Follow the instructions in these sections in the z/OS Unicode Services information: 
