Examples of system log stream definitions

The sample JCL in Figure 1 defines system log streams. These definitions are a guide, Substitute values that are appropriate for your system.
Figure 1. Sample definitions of the system logs
//JTVS01  JOB ,'DEF/DEL LOG STRMS',                         
//        CLASS=S,MSGCLASS=H,NOTIFY=SYSUSER                 
/*JOBPARM SYSAFF=SY02                                       
//********************************************************* 
//*This job deletes and redefines the system logs for TVS   
//*INSTANCE IGWTV001, WHICH RUNS ON SY01.                   
//********************************************************* 
//LGDELDEF EXEC PGM=IXCMIAPU                                
//SYSPRINT DD SYSOUT=*,DCB=RECFM=FBA                        
//SYSIN    DD *                                             
  DATA TYPE(LOGR) REPORT(NO)                                
  DELETE LOGSTREAM NAME(IGWTV001.IGWLOG.SYSLOG)             
  DELETE LOGSTREAM NAME(IGWTV001.IGWSHUNT.SHUNTLOG)         
  DEFINE LOGSTREAM NAME(IGWTV001.IGWSHUNT.SHUNTLOG)         
                    STRUCTNAME(LOG_IGWSHUNT_001)            
                    LS_SIZE(6000)                           
                    LS_DATACLAS(LOGRDC)                     
                    LS_STORCLAS(S1P02S01)                   
           /*       STG_DUPLEX(NO)    */                    
                    STG_DUPLEX(YES)                         
                    DUPLEXMODE(COND)                        
                    STG_SIZE(6000)                          
                    STG_STORCLAS(S1P02S01)                  
                    STG_DATACLAS(LOGRDC)                    
                    HIGHOFFLOAD(95)                         
                    LOWOFFLOAD(15)                          
                    DIAG(YES)                               
                                                            
   DEFINE LOGSTREAM NAME(IGWTV001.IGWLOG.SYSLOG)            
                    STRUCTNAME(LOG_IGWLOG_001)              
                    LS_SIZE(6000)                           
                    LS_DATACLAS(LOGRDC)                     
                    LS_STORCLAS(S1P02S01)                   
              /*    STG_DUPLEX(NO)     */                   
                    DIAG(YES)                               
                    STG_DUPLEX(YES)                         
                    STG_SIZE(6000)                          
                    STG_STORCLAS(S1P02S01)                  
                    STG_DATACLAS(LOGRDC)                    
                    DUPLEXMODE(COND)                        
                    HIGHOFFLOAD(95)                         
                    LOWOFFLOAD(15)                          
/*