ICFs are PUs in a CPC configured to run only CFCC code. The PUs are not shipped with a fixed function assignment, but are assigned during power-on reset (POR) or later non-disruptively by on demand offerings such as: CBU, CUoD, CIU, ON/OFF CoD. Those offerings allow the customer to […]
A coupling facility is a special logical partition that runs the coupling facility control code (CFCC) and provides high-speed caching, list processing, and locking functions in a sysplex. HCD enables you to specify whether a logical partition can be a coupling facility, operating system, or either on certain processors. You […]
External Time Reference hardware facility (ETR) is the generic name for IBM Sysplex Timer. The ETR architecture provides the means of synchronizing TOD clocks in different CPCs with a centralized time reference, which in turn can be set accurately on the basis of UTC time standard (External Time Source). The […]
The cross-system coupling facility (XCF) component of z/OS manages communications between applications in a sysplex. XCF services allow authorized programs in a sysplex to communicate with programs on the same MVS system or other MVS systems. If a system fails, XCF services also provide the capability for batch jobs and […]
The following JCL creates a history data set from log data recorded on the Logrec log stream //LOGRECHS JOB,MSGLEVEL=(1,1),MSGCLASS=X,NOTIFY=&SYSUID //EREPDALY EXEC PGM=IFCEREP1,PARM=(‘HIST,ACC=Y,SYSUM’) //ACCIN DD DSN=SYS1.SYSPLEX.LOGREC, // SUBSYS=(LOGR,IFBSEXIT,,’DEVICESTATS,LASTRUN’), // DCB=(RECFM=VB,BLKSIZE=4000) //ACCDEV DD DSN=MVS.LOGREC.LGSTREAM.HISTORY, // DISP=(NEW,CATLG), // DCB=(RECFM=VB,BLKSIZE=4000), // UNIT=SYSDA,SPACE=(CYL,(25,5)) //SERLOG DD DUMMY //DIRECTWK DD UNIT=SYSDA,SPACE=(CYL,15,,CONTIG) //TOURIST DD SYSOUT=A,DCB=BLKSIZE=133 //EREPPT DD SYSOUT=A,DCB=BLKSIZE=133 […]
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