The first thing to do before doing a system save is have your CL program issue a command 'PRTSYSINF' and copy the spool file(*LAST) to a data file. You will then have a backup that will include all of your critical system parameters and values. This is especially critical for disaster recovery.
PGM DCLF FILE(OUTQPF) MONMSG MSGID(CPF0000 CPF9999) CHGJOB OUTQ(QGPL/SYSOUTQ) /* PRINT SYSTEM INFORMATION 'IBM' COMMAND */ PRTSYSINF CPYSPLF FILE(QPRTSPLQ) TOFILE(OUTQPF) JOB(*) SPLNBR(*LAST) TOMBR(PRTSYS) ENDPGM
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