The PowerExchange Logger for z/OS needs to reuse the specified active log data set name and start RBA, because no other active logs are available. However, the specified number of log reader processes are currently reading the active log. This message is issued as a WTO message.
The PowerExchange Logger begins to write new data to the active log data set. This action might result in a reader abend.
Determine why the PowerExchange Logger was forced to steal the active log data set. The number of active log data sets might be insufficient, especially if the number of log reader processes that normally run is greater than the number of active log data sets. To determine the number of reader processes that are currently active, use the PowerExchange Logger DISPLAY command.
Another cause of this problem is a failure to archive active log data. Examine the status of any recent archive attempts. You can also use the PowerExchange Logger DISPLAY command to determine the status of the active log data sets and whether any need to be archived.