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Step 4 - Verify data migration

You can verify that the data has been migrated successfully using the dual-mode facility (DMF), which is described in The dual mode facility (DMF), and the VIDREAD utility. Sample JCL using the VIDREAD utility program follows:

Figure 1. Using VIDREAD with DMF to verify data migration
//CHECKIT EXEC PGM=VIDREAD
//STEPLIB   DD DSN=appl.drivers.load,DISP=SHR
//          DD DSN=VID.SVIDLODE,DISP=SHR
//SYSPRINT  DD SYSOUT=*
//FILEINV   DD DSN=appl.base.cluster.file,DISP=SHR
//FILEIN@   DD DSN=appl.base.cluster.file.DUMMY,DISP=SHR
//FILEIN    DD SUBSYS=(ssi,db2id,dimname,FILEINV)
//VIDTRCE   DD SYSOUT=*                 
//VIDTRCEP  DD *                        
TRACE P01,P03,P04,P05,P08,DIM=dimname  
//                                     

The DD statement FILEINV defines the original VSAM data set and is specified as the fourth SUBSYS parameter to enable DMF. You can choose any DD name. Note that you must use different VSAM data sets for FILEIN@ and FILEINV to avoid potential VSAM sharing issues. See Additional DD statement for dummy VSAM data set for details concerning the FILEIN@ DD statement.


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Timestamp icon Last updated: Monday, 10 February 2014


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