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Utility Functions › VSAM Utility › Define Alternate Index File

Define Alternate Index File

The Define Alternate Index File screen lets you create an alternate index VSAM file in response to a command of 'I' from the VSAM Utility screen. Use this screen to specify the DSNs for the data and index components of the VSAM file, the base cluster related to the alternate index, allocation parameters for the data and index components, various VSAM file definition parameters, VSAM processing options, and if applicable, SMS Class information.

-------  CA File Master Plus ---  Define Alternate Index File  -------
COMMAND ===>                                                                  
                                                                               
Component DSNs:                                                                
  AIX cluster     ===>'ABC.CIRCLE.KSDS99'                                     
  AIX data        ===>'ABC.CIRCLE.KSDS99.DATA'                                
  AIX index       ===>'ABC.CIRCLE.KSDS99.INDEX'                               
  Base cluster    ===> ______________________________________________          
                                                                               
AIX Allocation:         Data    Index    Options                               
  Volume           ===> CAI002  CAI002     Multiple volumes?      ===> N       
  CI size (opt)    ===> 16384   2048       AIX in sync with base? ===> Y       
  Unit             ===> CYLS    CYLS       Unique key in base?    ===> N       
  Primary          ===> 1       1          Load Restartable?      ===> Y       
  Secondary        ===> 10      1          Erase on delete?       ===> N       
  AIX key pos      ===> 1                  Write check?           ===> N       
  AIX key len      ===> 6                  Replicate index?       ===> N       
  Avg AIX rec size ===> 80                                                     
  Max AIX rec size ===> 80                                                     
  Expiration date  ===>                                                        
  OWNER ID         ===>                  SMS                                   
  % Free CI & CA   ===> 30  10             Data Class             ===>         
  Share options    ===> 2 3                                                    
  Buffer space     ===> 34816

The DSN for the data and index component defaults to the DSN for the cluster being defined with '.DATA' and '.INDEX' appended, but the names can be updated.

IDCAMs control cards are generated according to the parameters you type, and then one of the following actions is performed depending on the Execution Mode field in the main VSAM Utility screen: