Extract (IXB)

Purpose

The Extract dialog generates JCL that runs the Extract (IXB) function. This function extracts all segments or selected segments from a database, and saves them to a sequential data set. You can edit the JCL and IXB input parameters before you submit the job, or you can create your own batch job to run the Extract function.

Usage notes

The Extract JCL generated by FM/IMS has the following flows:

This diagram shows the inputs to and outputs from the Extract (IXB) function. The inputs are FMN1JIN, FMNIMSIN, and IMS database data sets. The outputs are REPORT, UNLOAD, and SYSPRINT. — Figure 1. Flows for Extract (IXB) step

FMN1JIN: Points to the FM/IMS skeleton library. This DD statement is only used when you extract data from HALDB databases.
FMNIMSIN: Contains the control statements for the Extract. These control statements are discussed below.
REPORT: Defines the output data set for the Database Extract Summary report.
IMS database data sets: In DLI mode, FM/IMS includes DDs for each of the IMS database data sets associated with the IMS database being extracted. If the database has logical relationships, the data sets for the logically related databases also need to be included.
UNLOAD: Defines the output data set for the IMS segments that the function extracts. For the file layout, see Extract data layout.
SYSPRINT: Defines the output data set for the messages that the Extract issues.