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Editing VSAM files using record level sharing

File-AID supports browsing and editing of VSAM files that are opened using Record Level Sharing (RLS) by another user or application, subject to the rules of RLS. To edit a file with RLS, Disposition (see Disposition) must be set to SHR; Disposition OLD will not allow sharing.

File-AID Edit supports RLS VSAM data sets defined with LOG(NONE) without requiring the IBM product DFSMStvs (Transactional VSAM, or TVS).

RLS VSAM data sets defined with LOG parameter other than NONE (ALL or UNDO) require TVS for File-AID RLS Edit support. If TVS is not available, File-AID Edit displays the following messages:

IEC161I 009-0778,TSOID01,ATSOPROC,SYS00176,,,
IEC161I RLSVSAM.KSDS1,,CATALOG.MVSICFU.SHARED.

File-AID then disables the RLS Edit for this file and continues processing it with non-RLS Edit, displaying message RLS disabled on the first EDIT panel.

Configuration options enable or disable RLS processing for File-AID EDIT and BROWSE. For more information, see VSAM Record Level Sharing (RLS) Parameters in the File-AID/MVS additional parameters (FAMVALL). When the option is enabled for BROWSE, you are prompted whether to disable RLS processing for an individual data set (see the following figure).

RLS Browse Processing Prompt


File-AID ----------------  RLS Browse Processing  -----------------------------
 Command ===>                                                                   
                                                                               
   Dataset name:  USERID09.RLSVSAM.RRDS2                                    
                                                                               
   This file is defined with Record Level Sharing (RLS). If this file is opened
   by another user in non-RLS mode, you will be unable to browse the file in    
   RLS mode.                                                                    
                                                                               
   If you process with RLS, you may impact other users processing with          
   non-RLS mode.                                                                
                                                                               
   RLS mode ===> Y    (Y = Process with RLS; N = Process with non-RLS)          
                                                                               
   Use ENTER to continue

When you enter the SAVE command in EDIT, File-AID checks whether your inserted, changed or deleted records are in conflict with other users’ updates or locks and displays a message (see the following figure).

  • All updated records without conflict are saved, even when other records have a conflict.
  • Updated records with conflict are displayed and marked either =FAIL>>> or =LOCK>>>.
    • Records marked =LOCK>>> were locked by another user, retry the SAVE when the record lock is released.
    • Records marked =FAIL>>> cannot be updated due to a superseding update by another user, CANCEL the update of the failed records and reedit the failed records.

RLS Conflict Flagging

image2021-5-26_10-48-34.png

 

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BMC Compuware File-AID/MVS 21.01