How to put a report which contains code for BDC in background

Question

Hello Experts ,
Please provide your valuable opinions on following issue,
My BDC execution is taking longer time and it gives time out error. To avoid this problem i have created a separate report which l contains the BDC code (Call transaction ) and  i have put this report for background execution. But upon doing this My BDC code is not performing the transaction call which it was performing when it was executed individually.  In sm37 it shown the job that i am creating but nothing is actually happening as a result of transaction call.
The code that i have written is :
RFC code
SUBMIT ZREPORT AND RETURN.
RFC end
Z_REPORT .
PERFORM open_job.
PERFORM get_print_parameters.
PERFORM job_submit. here in Submit i have specified the another report name(zbdcreport) which contains the actual logic for bdc 
PERFORM job_close.
Report END.
zbdcreport
The call transaction is as follows :
( CALL TRANSACTION TCODE USING BDCDATA
                     MODE   'N' "CTUMODE "N
                     UPDATE 'S' "CUPDATE "S
                     MESSAGES INTO MESSTAB .)
end zbdcreport
Can anybody provide the reason for the error . 
Regards,
Uma

Answer 1

Hi
Check the code using this...
DATA: number           TYPE tbtcjob-jobcount,
      name             TYPE tbtcjob-jobname VALUE 'JOB_TEST',
      print_parameters TYPE pri_params.
CALL FUNCTION 'JOB_OPEN'
  EXPORTING
    jobname          = name
  IMPORTING
    jobcount         = number
  EXCEPTIONS
    cant_create_job  = 1
    invalid_job_data = 2
    jobname_missing  = 3
    OTHERS           = 4.
IF sy-subrc = 0.
  SUBMIT submitable TO SAP-SPOOL
                    SPOOL PARAMETERS print_parameters
                    WITHOUT SPOOL DYNPRO
                    VIA JOB name NUMBER number
                    AND RETURN.
  IF sy-subrc = 0.
    CALL FUNCTION 'JOB_CLOSE'
      EXPORTING
        jobcount             = number
        jobname              = name
        strtimmed            = 'X'
      EXCEPTIONS
        cant_start_immediate = 1
        invalid_startdate    = 2
        jobname_missing      = 3
        job_close_failed     = 4
        job_nosteps          = 5
        job_notex            = 6
        lock_failed          = 7
        OTHERS               = 8.
    IF sy-subrc <> 0.
    ENDIF.
  ENDIF.
ENDIF.