Listing and Displaying Class Information

To display information about data classes that are available for your data sets or management and storage classes that are available for your data sets or objects, you must start with the ISMF Primary Option Menu ( Figure 2). Select the appropriate application from the menu, and the corresponding application selection panel is displayed. You can then specify the class whose attributes you want to look at, or you can display a list of available classes of a single type.

Example: Creating a Data Class List

To create a data class list, complete each field on the Data Class Application Selection panel, shown in Figure 1.

Figure 1. Data Class Application Selection Panel

   Panel  Utilities  Help
 -------------------------------------------------------------------------------
                        DATA CLASS APPLICATION SELECTION
 Command ===>

 To perform Data Class Operations, Specify:
   CDS Name . . . . . . 'ACTIVE'
                                (1 to 44 character data set name or 'Active'
   Data Class Name  . . script%   (For Data Class List, fully or partially
                                  specified or * for all)

 Select one of the following options  :
   1  1. List    - Generate a list of Data Classes
      2. Display - Display a Data Class


 If List Option is chosen,
    Enter "/" to select option      Respecify View Criteria
                                    Respecify Sort Criteria



 Use ENTER to Perform Selection;
 Use HELP Command for Help; Use END Command to Exit.

Complete each field on the Data Class Application panel, as follows:

CDS NAME

Enter the 1- to 44-character name (46 characters including quotation marks) of a control data set (CDS). ISMF processes quoted and unquoted CDS names using TSO conventions.

The CDS contains information about the configuration. To specify the active control data set (ACDS), enter 'ACTIVE' as the CDS name. The ACDS contains the current configuration for your installation.

This field is primed with the CDS name last referenced in ISMF, and the default is 'ACTIVE'.

DATA CLASS NAME

Enter a fully or partially specified class name (in this case, a data class name). This field is primed with the last-used value, and the default is an asterisk (*).

When an asterisk is specified, ISMF generates a list of all the classes in the control data set you indicated.

DATA CLASS NAME ===> *

If you want to list the classes, you can enter a partially specified name so that the list contains only the classes you are looking for.

Use an asterisk for zero or more non-blank characters. For example, to list all data classes with a 't' in the name, specify:

DATA CLASS NAME ===> *t*

Use a percent sign (%) for 1 non-blank character each. For example, to list all 7-character class names beginning with 'script', specify:

DATA CLASS NAME ===> script%

This field is primed with the last-used value, and the default is an asterisk (*). If you enter a fully specified class name you can generate a list containing the information about only one class, or you can display the attributes of one class.

SELECT ONE OF THE FOLLOWING OPTIONS

Complete this field by entering a '1' or '2'. The field is primed with '1' and defaults to '1'.

Enter '1' to generate a list that contains the classes you specified, as shown in Figure 2.

Figure 2. Data Class List Panel

   Panel  List  Utilities  Scroll  Help
 --------------------------------------------------------------------------------
                                 DATA CLASS LIST
 Command ===>                                                Scroll ===> HALF
                                                         Entries 1-19 of 199
                                                         Data Columns 3-9 of 48
 CDS Name . : ACTIVE

 Enter Line Operators below:

     LINE       DATACLAS                                                AVG
     OPERATOR   NAME      RECORG  RECFM  LRECL  KEYLEN  KEYOFF  AVGREC  VALUE
    ---(1)----  --(2)---  -(3)--  -(4)-  -(5)-  -(6)--  -(7)--  -(8)--  -(9)-
                 ACCTDSN4 --      ----   -----     ---   -----  -       -----
                 ACCTDSN5 --      ----   -----     ---   -----  -       -----
                 ACCTDSN6 --      ----   -----     ---   -----  -       -----
                 ACCTJOB4 --      ----   -----     ---   -----  -       -----
                 ACCTJOB5 --      ----   -----     ---   -----  -       -----
                 ACCTJOB6 --      ----   -----     ---   -----  -       -----
                 ACCTSTP4 --      ----   -----     ---   -----  -       -----
                 ACCTSTP5 --      ----   -----     ---   -----  -       -----
                 ACCTSTP6 --      ----   -----     ---   -----  -       -----
                 ATLDC004 --      ----      80     ---   -----  -       -----
                 ATLDC008 --      ----      80     ---   -----  -       -----

Tip: If you want to display the data class attributes after you generate the data class list, enter the DISPLAY command on the Data Class List panel next to the name of the class whose attributes you wish to view.

Enter '2' to display the attributes of the class you specified, as shown in Figure 3.

Figure 3. Page 1 of the Data Class Display Panel

   Panel  Utilities  Scroll  Help
 --------------------------------------------------------------------------------
                               DATA CLASS DISPLAY                   Page 1 of 5
 Command ===>

 CDS Name  . . . : ACTIVE
 Data Class Name : ACCTDSN4

 Description : DATACLAS ACCTDSN4 FOR ACS INTERNAL PROCESSING

 Recfm  . . . . . . . . . : VB
 Lrecl  . . . . . . . . . : 255
 Space Avgrec . . . . . . : U
       Avg Value  . . . . : 255
       Primary  . . . . . : 5000
       Secondary  . . . . : 5000
       Directory  . . . . : 62
 Retpd Or Expdt   . . . . :
 Volume Count     . . . . :
   Add'l Volume Amount  . :


 Use DOWN Command to View next Panel;
 Use HELP Command for Help; Use END Command to Exit.

RESPECIFY VIEW CRITERIA

You can choose the columns and the order of the columns to appear on the Data Class Application List panel. This field is always primed with a blank.

Leave this field blank to generate a data class list using the default VIEW criteria (display all columns in alphabetical order) or the criteria that were last specified to ISMF, if any.
Restriction: This might result in a restricted view.
Specify a slash (/) to first display a Data Class View Entry panel, as shown in Figure 4.

Figure 4. Data Class View Entry Panel with Specific Column Tags

   Panel  Utilities  Scroll  Help                                              
-----------------------------------------------------------------------------
                        DATA CLASS VIEW ENTRY PANEL              Page 1 of 3   
Command ===>      
                                                                            
If desired, Select option . .           (1 - SELECT, 2 - SAVE, 3 - DELETE)  
                View Name . .           (1 to 8 characters, * to Delete all,
                                          or blank for List of Saved Views) 
 Specify tags in Sequence Desired: 
 ===> *        
                                                                         
       Line Operator                    (26)  Data Set Name Type        
       Data Class Name                  (16)  Dynamic Volume Count     
 (15)  Additional Volume Amt            (48)  EATTR                    
  (8)  Avgrec                           (27)  Extended Addressability  
  (9)  Avg Value                        (44)  Extent Constraint Removal
 (35)  BWO                              (42)  FRlog                    
 (41)  Block Size Limit                 (33)  Initial Load             
 (49)  CA Reclaim                        (6)  Key Length               
 (28)  Compaction                        (7)  Key Offset               
 (18)  Control Interval Size data       (24)  Last Date Modified                  
Use ENTER to Perform Selection or Display List in VIEW Sequence;           
Use DOWN For previous Panel; Use HELP Command for Help; Use END Command to Exit.

If you specify tag numbers 26, 5 and 3 on the Data Class View Entry panel, only columns 1, 2, 26, 5 and 3 will be displayed on the Data Class List panel, as shown in Figure 5. (Columns 1 and 2, Line Operator and Data Class Name, cannot be specified because these columns always appear as the first two columns on the list panel.)

Figure 5. Data Class Application List Panel in VIEW Order

  Panel  List  Utilities  Scroll  Help
 --------------------------------------------------------------------------------
                               DATA CLASS LIST               VIEW WAS SUCCESSFUL
 COMMAND ===>                                                   SCROLL ===> PAGE
                                                                Entries 1-9 of 9
                                                                View in Use
 CDS NAME:  SCDS.DC

 ENTER LINE OPERATORS BELOW:

     LINE       DATACLAS
     OPERATOR   NAME      DATA SET NAME TYPE  LRECL  RECORG
    ---(1)----  --(2)---  -------(26)-------  -(5)-  -(3)--
                DCNAME1   ------------------  32761  KS
                DCNAME2   ------------------  32761  ES
                DCNAME3   ------------------  32761  RR
                DCNAME4   ------------------  -----  LS
                DCNAME5   LIBRARY             -----  --
                DCNAME6   PDS                 -----  --
                DCNAME7   HFS                 -----  --
                DCNAME8   EXTENDED REQUIRED   -----  --
                DCNAME9   ------------------  -----  --
    ----------  --------  ------  BOTTOM  OF  DATA  ------  --------  ---------

Tip: If you want to view the list after it is generated, enter the VIEW command, with or without parameters, on the command line of the list panel. For more information about selecting and reordering columns on an application list, see Selecting List Display Columns.

RESPECIFY SORT CRITERIA

The RESPECIFY SORT CRITERIA field on an application selection panel allows you to change the major and minor fields and the order in which the entries are sorted. This field is always primed with a blank space.

Leave this field blank to generate a data class list using the default SORT criteria.
If you request a list and specify a slash (/), the Data Class Sort Entry panel is displayed first, as shown in Figure 6. Only the column tags specified as view criteria are displayed on the Sort Entry panel. Complete this entry panel just as you would other Sort Entry panels.

Figure 6. Data Class Sort Entry Panel

   Panel  Utilities  Scroll  Help                                              
-----------------------------------------------------------------------------  
                         DATA CLASS SORT ENTRY PANEL              Page 1 of 3  
COmmand ===>                                                                   
                                                                               
Specify one or more Attribute Numbers for Sort Sequence:                 
  Major Field  . . . 2    Minor Field 1 . . .       Minor Field 2 . . .  
                                                                        
Specify A for Ascending or D for Descending Sort Order:                  
  Major Field  . . . A    Minor Field 1 . . .       Minor Field 2 . . .        
      
   (1)  Line Operator                    (26)  Data Set Name Type        
   (2)  Data Class Name                  (16)  Dynamic Volume Count      
  (15)  Additional Volume Amt            (49)  EATTR                     
   (8)  Avgrec                           (27)  Extended Addressability   
   (9)  Avg Value                        (44)  Extent Constraint Removal 
  (35)  BWO                              (42)  FRlog                     
  (41)  Block Size Limit                 (33)  Initial Load              
  (49)  CA Reclaim                        (6)  Key Length                
  (28)  Compaction                        (7)  Key Offset                
  (18)  Control Interval Size Data       (24)  Last Date Modified        

Use ENTER to Perform SORT; Use DOWN Command to view next Panel;            
Use HELP Command for Help; Use END Command to Exit.

Tip: If you want to sort the list after it is constructed, enter the SORT command, with or without parameters, on the command line of the list panel. For more information about sorting a list see Sorting the List.

Displaying and Tailoring DFSMS Lists

You can use a number of commands and line operators to scroll through and tailor class lists. See ISMF Command and Line Operator Reference Summary for a list of available commands and line operators. Since you can modify a class list as you would a data set list, refer also to Tailoring the List Entries for more information.

Using Line Operators on DFSMS Lists

You can specify the DISPLAY line operator next to anyclass name on a class list to generate a panel that displays values associated with that particular class. This information can help you decide whether you need to assign a new DFSMS class to your data set or object.

If you determine that a data set you own should be associated with adifferent management class or storage class, and if you have authorization, you can use the ALTER line operator against a data set list entry to specify another storage class or management class. See page Using the Data Set ALTER Line Operator for an example of using the ALTER line operator.

Table 1 summarizes line operators you can use to facilitate system-managed storage.

Table 1. Summary of Storage Management Subsystem Line Operators
Task	Function	Scope	Application	Action
Display the attributes associated with an SMS class	DISPLAY	A data, management, or storage class.	Use the line operator from the Data, Management, or Storage Class Lists.	Displays the entry selected from the list panel. Performed in the foreground by DFSMSdfp.
Associate a new management class or storage class with an SMS-managed data set	ALTER	A single cataloged data set.	Use the line operator from the Data Set List.	Assign a new management class or storage class to a single cataloged data set. Performed in the foreground by DFSMSdfp.