FBEs and IRDs are used in the initial data migration process. There is no stand-alone exit testing facility with CICS® VT so the first time your exits are used is during the initial data migration.
For files that you are migrating to a single DB2® table, code any FBEs and add them to the mapping, as shown in Figure 1. Generate the CICS VT drivers and then perform the data migration process.
For files that you are migrating to multiple tables, the following approach is recommended:
You should use the VIDREAD utility to test data retrieval. Sample JCL is shown in Figure 1.
//VIDREAD JOB CLASS=A,MSGCLASS=X,NOTIFY=&SYSUID
//*
//CHECKIT EXEC PGM=VIDREAD,REGION=8M
//STEPLIB DD DSN=appl.EXIT.LOAD,DISP=SHR
// DD DSN=appl.DRIVERS.LOAD,DISP=SHR
// DD DSN=VID.SVIDLODE,DISP=SHR
//FILEIN@ DD DISP=SHR,DSN=vsam.DUMMY.APPLCTL
//FILEIN DD SUBSYS=(vids,db2x,APPLCTL)
//VIDTRCE DD SYSOUT=*
//VIDTRCEP DD *
TRACE P01,P03,P04,P05,P06,P08,DIM=APPLCTL
TRACSET CALLS=50
Consider coding a simple program to test update calls for files that use FBE and IRD exits.