CDC Guide for z/OS

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IMS Log-Based ECCR DD Statements

You must specify certain DD statements in the IMS log-based JCL. The DDs identify data sets that the ECCR uses.

Some of the data sets are allocated at installation, while others are created dynamically by the IMS log-based ECCR.

The following table describes the DD statements:

DD Name	Description
DATAMAP	Identifies the data set that contains the data maps that the PowerExchange Listener uses for nonrelational access to data.
DTLAMCPR	Identifies the data set that contains capture registration information. This data set is used by both the PowerExchange Listener and IMS log-based ECCR. The PowerExchange Listener opens the data set in read/write mode, whereas the ECCR only reads it.
DTLCACFG	Identifies the data set that contains the IMS log-based ECCR configuration parameters.
DTLCFG	Identifies the main PowerExchange configuration member, which is usually named DBMOVER. Some of these parameters also apply to the IMS log-based ECCR.
DTLDBRC	To use the DTLCCIMX ECCR program, you must specify this DD with SYSOUT=*. If you use another ECCR program, this DD is not required, but you can leave it uncommented in the JCL without causing errors.
DTLKEY	Identifies the PowerExchange License key file that contains the license key for PowerExchange, including the PowerExchange CDC options you have.
DTLLOG and DTLLOG01	Identifies the PowerExchange message log files. These SYSOUT files contain messages that report the IMS log-based ECCR status and events.
DTLMSG	Identifies the data set contains the PowerExchange messages.