SIMRBLD is a synonym for REBUILD. Use the SIMRBLD command to clarify that you are running in simulation mode.
SIMRBLD command generally has the same meaning and the same syntax in simulation mode as a regular REBUILD command has in non-simulation mode.
When you use SIMRBLD, you must also specify OPTIONS SIMULATE YES, which requires a valid Recovery Management for Db2 solution password. For more information, see SIMULATE-YES.