Use the DTLCUIML utility to define a marker for the IMS log-based ECCR in the IMS system log data set (SLDS). Once the IMS log-based ECCR encounters one of the markers, it triggers a message in the PowerExchange Logger which stipulates a Restart and Sequence Token for the affected Registration Tags.
These Tokens can then be used as input for the Application Maintenance Utility (DTLUAPPL) to define the start point for an extraction.
There is no limit or restriction on the number of markers being set in the IMS SLDS. The IMS Log Record ID chosen has to be unique for the individual installation, and the number needs to be part of the input parameters for the IMS log-based ECCR.
This utility is used to write user-defined records to the IMS log.
The parameters controlling the utility are specified in the SYSIN file in the JCL.
The utility runs as a standard IMS application program. There is no need to provide a specific PSB. The utility can use any PSB as long as the first PCB in the PSB is an IOPCB. The utility uses the IMS LOG Call to write IMS log records.
This utility must run as an IMS BMP job. This ensures that the IMS Log record is written into the IMS logstream and that the associated log is read by the IMS log-based Collector. In an IMS DCI situation the DTLUAPPL utility has to be used to establish an extraction point for the changed data.