The PowerExchange Logger for z/OS receives change data from the ECCRs that connect to it and stores the change data in log data sets.

Real-time extraction sessions or PowerExchange Condense jobs can then extract data from the log data sets. Alternatively, you can configure the PowerExchange Logger for Linux, UNIX, and Windows on a remote system to read read change data from the PowerExchange Logger for z/OS log files and relog that data on the Linux, UNIX, or Windows system.

The PowerExchange Logger for z/OS stores change data in an active log data set. When the active log data set becomes full, the PowerExchange Logger for z/OS archives the change data to a sequential archive log data set. To prevent data loss, the PowerExchange Logger provides dual logging for both the active and archive log data sets.