Example 1: dumping data sets constantly in use

//JOB1     JOB   accounting information,REGION=nnnnK
//STEP1    EXEC  PGM=ADRDSSU
//SYSPRINT DD    SYSOUT=A
//DASD1    DD    UNIT=3380,VOL=(PRIVATE,SER=111111),DISP=OLD
//DASD2    DD    UNIT=3380,VOL=(PRIVATE,SER=222222),DISP=OLD
//TAPE     DD    UNIT=3480,VOL=SER=TAPE02,
//  LABEL=(1,SL),DISP=(NEW,CATLG),DSNAME=USER2.BACKUP
//SYSIN    DD    *
 DUMP  LOGINDDNAME(DASD1) OUTDDNAME(TAPE) -
       DATASET(INCLUDE(**)) TOL(ENQF) WAIT(0,0)
/*

DFSMSdss does not wait (WAIT(0,0)) if a data set is in use. Instead, it processes the data set without serialization or enqueuing (TOL(ENQF)).