IKJEFT01 Unload DB2 Tables

IKJEFT01 is used to unload the DB2 table from the database and creates a flat file with the data. It uses the DSNTIAUL program to unload data from DB2 tables into sequential data sets. The table data are not affected by the unload operation. DSNTIAUL uses SQL to access DB2.

Syntax -

----+----1----+----2----+----3----+----4----+----5----+
...
//UNLOAD   EXEC PGM=IKJEFT01,DYNAMNBR=50
//STEPLIB  DD  DSN=XXXXXX.SDSNEXIT,DISP=SHR
//         DD  DSN=XXXXXX.SDSNLOAD,DISP=SHR 
//**************DB2 query to unload the data
//SYSIN    DD  *
 db2_query WITH UR;
/*
//SYSTSIN  DD  *
DSN SYSTEM(DB2T)                >> DB2 System    
RUN PROGRAM(DSNTIAUL) -         >> unloading program  
    PLAN(DSNTIAUL) -            >> Plan authorized for DB2T
    LIB('XXXXXX.RUNLIB.LOAD') - >> Program existed library  
    PARMS('SQL')                >> Program Parm
END
//****************Unloading file
//SYSREC00 DD  DSN=ps-file-to-unload-table-data,...
//****************Unloading table structure
//SYSPUNCH DD  DSN=ps-file-to-store-table-structure,...
//*
...

Practical Example -

Scenario - JCL to unload the db2 table (EMPLOYEE) using IKJEFT01 utility.

JCL -

----+----1----+----2----+----3----+----4----+----5----+
...
//UNLOAD   EXEC PGM=IKJEFT01,DYNAMNBR=50
//STEPLIB  DD  DSN=DSNA10.DBAG.SDSNEXIT,DISP=SHR 
//         DD  DSN=DSNA10.SDSNLOAD,DISP=SHR
//SYSIN    DD  *
  SELECT * FROM EMPLOYEE WITH UR;
/*
//SYSTSIN  DD  *
DSN SYSTEM(DBAG)
RUN PROGRAM(DSNTIAUL) -
    PLAN(DSNTIB10) -
    LIB('DSNA10.DBAG.RUNLIB.LOAD') -
    PARMS('SQL')
END
/*
//SYSREC00 DD  DSN=MATEPK.EMPL.UNLOAD,
//             DISP=(NEW,CATLG,DELETE),
//             UNIT=SYSDA,SPACE=(CYL,(1,1),RLSE)
//SYSPUNCH DD  DSN=MATEPK.EMPL.SYSPUNCH,
//             DISP=(NEW,CATLG,DELETE),
//             UNIT=SYSDA,SPACE=(CYL,(1,1),RLSE)
...