Each Db2 subsystem that will be discovered will need to grant DISPLAY authority to the user or group that the Ironstream job is running under. See the Db2 section of Appendix A for the Db2 or RACF resource names to be modified.
The DB2 SDSNLOAD dataset must be added to the agent STEPLIB and that if multiple DB2 versions are running on the same LPAR the latest version of the dataset should be used.
Also, a statement could be added that the DB2 subsystem must have the DSNREXX plan bound to each subsystem to be discovered. The SQL query referenced could be added to the trouble shooting section for DB2 to check that the DSNREXX plan is bound.