An LUOW is a set of related log records that represent all actions that were performed to accomplish a particular activity in the IMS environment.
To create an LUOW, Log Analyzer associates log records with each other.
For each log record that is identified as a candidate for the record selection process, Log Analyzer determines whether the record belongs to an LUOW that has already been created and, if so, associates the record with that LUOW. If not, Log Analyzer creates a new LUOW and associates the record with the new LUOW.
The process of creating LUOWs and associating records with them is performed concurrently with the process of identifying candidates and (if you specified SELECT filters) comparing records to the filters. For more information, see Selecting-log-records-and-LUOWs.