Creating the MVS log streams

During CICS® VR VSAM batch logging, CICS VR only attempts to connect and write to the appropriate log streams. CICS VR does not attempt to create the log streams if they do not already exist. MVS log streams can be created by invoking the IXCMIAPU utility.

This defines the log stream to the MVS system logger, therefore allowing CICS VR to connect to it. An example of using IXCMIAPU to define an undo log stream named DWW.UNDOLOG. See the MVS Setting up a Sysplex manual for more information about defining log streams:

Figure 1. Example using the IXCMIAPU utility to create a log stream

//*-------------------------------------------------------------------*/ 
//* Allocate UNDO LOG STREAM DWW.UNDOLOG                             */ 
//*-------------------------------------------------------------------*/ 
//DEFLGSTR EXEC PGM=IXCMIAPU                                             
//SYSPRINT DD   SYSOUT=*,DCB=RECFM=FBA                                   
//SYSIN    DD   *                                                        
   DATA TYPE(LOGR) REPORT(NO)                                            
     DEFINE LOGSTREAM NAME(DWW.UNDOLOG)                                  
            STRUCTNAME(LOG_GENERAL_001) LS_SIZE(1180)                    
            HIGHOFFLOAD(80) LOWOFFLOAD(40)                               
            AUTODELETE(NO) RETPD(0)                                      
            DESCRIPTION(CICSVR_UNOD_LOG)                                
/*