This example shows how to use the ALTER line operator to change the name of the SMS management class associated with a cataloged data set.

Generate a data set list and verify that the list has SMS-managed entries. Enter FIND 23 on the command line to display SMS columns. If a storage class name is listed for a given data set, that data set is SMS managed.

1. Enter ALTER line operator in the line operator column next to the data set for which you want to assign a new management class, as shown in Figure 1.
   Figure 1. Entering the ALTER Line Operator on a Data Set List

      Panel  List  Dataset  Utilities  Scroll  Help
    -------------------------------------------------------------------------------
                                    DATA SET LIST                     COLUMN FOUND
    Command ===>                                                  SCROLL ===> PAGE
                                                           Entries 1-4 of 4
    Enter Line Operators Below:                            Data Columns 25-27 of 41
   
        LINE                                       DATA     MANAGEMENT   STORAGE
        OPERATOR          DATA SET NAME         CLASS NAME  CLASS NAME  CLASS NAME
       ---(1)----  ------------(2)------------  ---(25)---  ---(26)---  ---(27)---
                   S2IISAMP.S1P01.DS102.DATA    --------    --------    --------
                   S2IISAMP.S1P98.DS101         --------    --------    S1P98S01
                   S2IISAMP.S1P98.DS101.DATA    --------    --------    --------
       alter       S2IISAMP.S1P98.DS103         --------    --------    S2P98S01
       ----------  ------  -----------  BOTTOM  OF  DATA  -----------  ------  ----
   
   
   
   
   
   
   
   
    

2. Press the ENTER key. ISMF displays the Data Set ALTER Entry Panel as shown in Figure 2. Complete the Data Set ALTER Entry Panel with the values shown.
   Figure 2. Completing the ALTER Entry Panel

      Panel  Utilities  Help
    -------------------------------------------------------------------------------
                              DATA SET ALTER ENTRY PANEL
    Command ===>
   
     Data Set Name: USER10.WORK.TEXT
     Data Set Entry Type: NONVSAM
     Data Set Environment: UNMANAGED
     Current Expiration Date: 0000/00/00
   
     To Alter Data Set, Specify:
       New Expiration Date  . . .             (YYYY/MM/DD, 0 to 9999, or NEVER)
       Roll-in Deferred, Rolloff GDS Only  . .      (Y or N)
   
   
   
   
   
   
   
   
   
    Use ENTER to Perform ALTER;
    Use HELP Command for Help; Use END Command to Exit.

   At this point, you can use the SPLIT SCREEN function and generate a management class list in order to list candidate management classes for your data set. However, if you know the name of the management class you want to select (in this example, s1p01m01), enter that name in the NEW MANAGEMENT CLASS field.

3. Press the ENTER key. ISMF submits the job and redisplays the list, as shown in Figure 3.
   Figure 3. Successful Submission for ALTER

      Panel  List  Dataset  Utilities  Scroll  Help
    -------------------------------------------------------------------------------
                                    DATA SET LIST
    Command ===>                                                  SCROLL ===> PAGE
                                                           Entries 1-4 of 4
    Enter Line Operators Below:                            Data Columns 25-27 of 41
   
        LINE                                       DATA     MANAGEMENT   STORAGE
        OPERATOR          DATA SET NAME         CLASS NAME  CLASS NAME  CLASS NAME
       ---(1)----  ------------(2)------------  ---(25)---  ---(26)---  ---(27)---
                   S2IISAMP.S1P01.DS102.DATA    --------    --------    --------
                   S2IISAMP.S1P98.DS101         --------    --------    S1P98S01
                   S2IISAMP.S1P98.DS101.DATA    --------    --------    --------
       *ALTER      S2IISAMP.S1P98.DS103         --------    --------    S2P98S01
       ----------  ------  -----------  BOTTOM  OF  DATA  -----------  ------  ----
   
   
   
   
   
   
   
   
    

   The asterisk next to the ALTER line operator in the line operator column indicates that the operation has completed successfully.

4. To verify that the new management class will be used for the data set, refresh the list with the REFRESH command and display the management class column to make sure the new management class name is there. Figure 4 shows the refreshed data set list, which verifies the successful data set alter.
   Figure 4. Verifying a Successful Data Set Alter

      Panel  List  Dataset  Utilities  Scroll  Help
    -------------------------------------------------------------------------------
                                    DATA SET LIST                   LIST REFRESHED
    Command ===>                                                  SCROLL ===> PAGE
                                                           Entries 1-4 of 4
    ENTER LINE OPERATORS BELOW:                            Data Columns 25-27 of 41
   
        LINE                                       DATA     MANAGEMENT   STORAGE
        OPERATOR          DATA SET NAME         CLASS NAME  CLASS NAME  CLASS NAME
       ---(1)----  ------------(2)------------  ---(25)---  ---(26)---  ---(27)---
                   S2IISAMP.S1P01.DS102.DATA    --------    --------    --------
                   S2IISAMP.S1P98.DS101         --------    --------    S1P98S01
                   S2IISAMP.S1P98.DS101.DATA    --------    --------    --------
                   S2IISAMP.S1P98.DS103         --------    S1P01M01    S2P98S01
       ----------  ------  -----------  BOTTOM  OF  DATA  -----------  ------  ----