https://www.ibm.com/docs/en/db2-for-zos/13.0.0?topic=dcp-ur-log-write-check-field-urlgwth-subsystem-parameter
Db2 13 - Installation and migration - UR LOG WRITE CHECK field (URLGWTH subsystem parameter)
Unless this option is disabled, Db2 issues a warning message to the console after log records are written by an uncommitted unit of recovery (UR). The URLGWTH...