Using Multiple Save Synchronization

Using the MONSWABRM command and the Sync ID field in the Backup Control Group, you can utilize the multiple save synchronization feature. This feature allows you to synchronize libraries and/or integrated file system together to achieve one common checkpoint.

The following control groups provide an example on how you might use this function:

Master Backup Control Group

                     Edit Backup Control Group Entries               RCHAS400  
                                                                               
 Group . . . . . . . . . . : MASTER                                            
 Default activity  . . . . . *BKUPCY                                           
 Text  . . . . . . . . . . . Master Backup Control Group                       
                                                                               
 Type information, press Enter.                                                
                                                                               
                                                                               
       Backup                                                                  
 Seq   Items       Exit command                                                
                                                                               
   10  *EXIT                                                                   
   20  *EXIT       MONSWABRM LIB(MULTSWA) CMD(STRSBSBRM) SYNCID(MULTSWAID) 
                   NUMSYNC(2) STRSAVWAIT(600) 
   30  *EXIT       SBMJOB CMD(STRBKUBRM CTLGRP(BKUCTLG1))                      
   40  *EXIT       SBMJOB CMD(STRBKUBRM CTLGRP(BKUCTLG2))                      
   50  *EXIT                                                                   
                                                                               
                                                                               
                                                                               
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 F3=Exit   F5=Refresh   F10=Change item  F11=Advanced backup controls          
 F12=Cancel                                                                    

Backup Control Group 1

                     Edit Backup Control Group Entries               RCHAS400   
                                                                                
 Group . . . . . . . . . . : SAMPLE                                             
 Default activity  . . . . . *BKUPCY                                            
 Text  . . . . . . . . . . . Backup control group 1                             
                                                                                
 Type information, press Enter.                                                 
                                                                                
                                  Weekly   Retain Save     SWA                  
      Backup     List ASP         Activity Object While    Message    Sync      
 Seq  Items      Type Device      SMTWTFS  Detail Active   Queue      ID        
                                                                                
   10 *EXIT                       *DFTACT                                       
   20 LIB1            *SYSBAS     *DFTACT  *YES   *SYNCLIB MULTSWA    MULTSWAID 
   30 LIB2            *SYSBAS     *DFTACT  *YES   *SYNCLIB *LIB       MULTSWAID 
   40 LIB3            *SYSBAS     *DFTACT  *YES   *SYNCLIB *LIB       MULTSWAID 
   50 *EXIT                       *DFTACT                                       
                                                                                
                                                                                
                                                                                
                                                                         Bottom 
 F3=Exit    F5=Refresh    F10=Change item    F11=Display exits                  
 F12=Cancel    F14=Display client omit status    F24=More keys                  
                                                                                

Backup Control Group 2

                   Display Backup Control Group Entries              RCHAS400   
                                                                                
 Group . . . . . . . . . . : BKUCTLG2                                           
 Default activity  . . . . : *BKUPCY                                            
 Text  . . . . . . . . . . : Backup Control Group 2                             
                                                                                
                                  Weekly   Retain Save     SWA                  
      Backup     List ASP         Activity Object While    Message    Sync      
 Seq  Items      Type Device      SMTWTFS  Detail Active   Queue      ID        
   10 IFSLIST    *LNK *SYSBAS     *DFTACT  *NO    *SYNC    MULTSWA    MULTSWAID 
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                         Bottom 
 Press Enter to continue.                                                       
                                                                                
 F3=Exit   F11=Display exits   F12=Cancel   F14=Display client omit status      

In the example, the Master Backup Control Group starts the MONSWABRM command with the appropriate set parameters and then submits off two backup control groups. Both of these control groups have backup entries that are syncing to the Sync ID of MULTSWAID. Backup Control Group 1 will run a save of libraries LIB01, LIB02 and LIB03 with one command and Backup Control Group 2 will run a save of integrated file system paths with one command. Since these two saves now meet the number of save operations specified on the Number of save operations parameter for the MONSWABRM command, a common checkpoint for both libraries and integrated file system objects will now be made. A checkpoint message will then be sent to the message queue MULTSWA. Once the message is sent to the queue, BRMS will then run the command STRSBSBRM, which was specified on the Command parameter for MONSWABRM.

Note:
It is very important to get the number of save operations correct. If you specified three save operations, and only two were submitted, then the sync will wait for the third save to begin. If the third save never starts, then the sync attempt will fail after the specified value on the Start save wait time parameter for MONSWABRM command has been met.


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