This example shows how to use the COMPRESS line operator to compress a data set.

Note: COMPRESS, which is a line operator, differs from COMPRESSED FORMAT, which is a data column.

1. Enter the COMPRESS line operator in the line operator column next to the data set USER1.ISPFILE, as shown in Figure 1.
   Figure 1. Entering the COMPRESS Line Operator

      Panel  List  Dataset  Utilities  Scroll  Help
    -------------------------------------------------------------------------------
                                    DATA SET LIST
    Command ===>                                                  SCROLL ===> DATA
                                                             Entries 1-7 of 7
    Enter Line Operators Below:                              Data Columns 3-5 of 41
   
        LINE                                      ALLOC      ALLOC    % NOT  
        OPERATOR          DATA SET NAME           SPACE      USED     USED   
       ---(1)----  ------------(2)------------  ---(3)---  ---(4)---  -(5)-  
                   USER1.DEB.LISTING1           ---------  ---------    ---  
                   USER1.ISMF.SYSIN.D880125.          46K        40K     13  
                     T105441
       compress    USER1.ISPFILE                     139K        93K     33  
                   USER1.ISPPROF                     185K       185K      0  
                   USER1.SPFLOG1.LIST                371K       371K      0  
                   USER1.SPFTEMP1.CNTL          ---------  ---------    ---  
                   USER1.SPF3.LIST                   788K       778K      0  
       ----------  ------  -----------  BOTTOM  OF  DATA  -----------  ------  ----
   
   
   
   
    

2. Press the ENTER key. ISMF displays the COMPRESS Entry Panel, as shown in Figure 2.
   Figure 2. Completing the COMPRESS Entry Panel

      Panel  Utilities  Help
    -------------------------------------------------------------------------------
                                 COMPRESS ENTRY PANEL
    Command ===>
   
    Optionally Specify one or more for
     Data Set: USER10.HCD.TERM
   
      To Control obtaining access to Data Set, Specify:
        Maximum Number of Retries  . . . . . . 2        (0 to 99)
        Number of Seconds between Retries  . . 2        (0 to 255)
        Serialize with Dynamic Allocation  . . N        (Y or N)
   
      For Password Protected Data Set, Specify:
        Data Set Password  . . . .                      (password or blanks)
   
      DFSMSdss Administrator Mode  . . N  (Y or N)
   
   
   
   
   
    Use ENTER to Perform COMPRESS;
    Use HELP Command for Help; Use END Command to Exit.

   Complete the COMPRESS Entry Panel with the values shown.

3. Press the ENTER key. ISMF displays the COMPRESS Job Submission Entry Panel shown in Figure 3. This panel is primed with values from your profile.
   Figure 3. Completing the COMPRESS Job Submission Entry Panel

      Panel  Utilities  Help
    -------------------------------------------------------------------------------
                              JOB SUBMISSION ENTRY PANEL
    Command ===>
   
    Select One of The Following
    1   1.  Submit Job for Background Processing
        2.  Save Generated Job in a Data Set
    If Save option is selected above, Specify:
     Data Set Name  . . .
     Replace Contents . . N             (Y or N)
   
    Job Statement Information:            (Verify before Proceeding)
          //USER10A  JOB (USER10,'B=050,D=M86,O=G48'),'USER10',
          //*       MSGCLASS=Z,NOTIFY=USER10,USER=USER10,
          //*       TIME=(0,5),MSGLEVEL=(1,1)
          //*
          //*
          //*
          //*
    Enter "/" to select option
    /  View or Change Execute Statements from Profile
    Use ENTER to Continue;
    Use HELP Command for Help; Use END Command to Exit.

   Complete the COMPRESS Job Submission Entry Panel with the values shown.

   Enter / in the VIEW OR CHANGE EXECUTE STATEMENTS FROM PROFILE field to verify the DFSMSdss execute statements ISMF will use to submit the job for background processing.

4. Press the ENTER key. ISMF then displays the DFSMSdss Execute Statement Entry Panel shown in Figure 4.
   Figure 4. Verifying the DFSMSdss Execute Statement

      Panel  Utilities  Help
    -------------------------------------------------------------------------------
                         DFDSS EXECUTE STATEMENT ENTRY PANEL
    Command ===>
   
    Specify DFDSS Execute Statement Information:
   
     ===> //*
     ===> //*
     ===> //**NOTE - THE REGION SIZE IS MINIMUM AND MAY BE CHANGED
     ===> //STEP1  EXEC  PGM=ADRDSSU,REGION=2048K
     ===> //*
     ===> //*
     ===> //SYSPRINT  DD  SYSOUT=*
   
   
   
   
   
   
   
   
    Use ENTER to Continue;
    Use HELP Command for Help; Use END Command to Exit.

5. Press the ENTER key. ISMF submits the job and redisplays the data set list, as shown in Figure 5.
   Figure 5. Successful Submission for COMPRESS

      Panel  List  Dataset  Utilities  Scroll  Help
    -------------------------------------------------------------------------------
                                    DATA SET LIST
    Command ===>                                                  SCROLL ===> DATA
                                                             Entries 1-7 of 7
    Enter Line Operators Below:                              Data Columns 3-5 of 41
   
        LINE                                      ALLOC      ALLOC    % NOT  
        OPERATOR          DATA SET NAME           SPACE      USED     USED   
       ---(1)----  ------------(2)------------  ---(3)---  ---(4)---  -(5)-  
                   USER1.DEB.LISTING1           ---------  ---------    ---  
                   USER1.ISMF.SYSIN.D880125.          46K        40K     13  
                     T105441
      *compress    USER1.ISPFILE                     139K        93K     33  
                   USER1.ISPPROF                     185K       185K      0  
                   USER1.SPFLOG1.LIST                371K       371K      0  
                   USER1.SPFTEMP1.CNTL          ---------  ---------    ---  
                   USER1.SPF3.LIST                   788K       778Kˋ      0  
       ----------  ------  -----------  BOTTOM  OF  DATA  -----------  ------  ----
   
   
   
   
    

   The asterisk next to the COMPRESS line operator in the line operator column indicates that USER1.ISPFILE has been successfully submitted for background processing.