If you are upgrading from Release 5.0 to Release 5.2 of DB2, we recommend that you run the db2upd52 command to support the new functionality added in the SYSIBM.SYSDATATYPES catalog table. See Updating Catalog Table Data for more information.
You should run the db2upd52 command to update the databases after you run the db2iupdt command to update the instance. See Updating Catalog Table Data for further information. You should also run the dasiupdt command to update the Administration Server. See Updating the Administration Server