z/OS

Conflicts

D GRS,C

displays conflicts...

SMPPTS Spill Data Sets

If you need more space in your SMPPTS data set, then you should consider defining one or more SMPPTS spill data sets. SMPPTS spill data sets are used to contain SYSMODs when the primary SMPPTS data set is full. Specifically, when the primary SMPPTS data set is full, SYSMODs are written to the first spill data set. When the first spill data set is full, SYSMODs are then written to the second spill data set, and so on. This continues until all SYSMODs are written to one of the data sets, or until the primary SMPPTS and all of the spill data sets are full.

IPL avoidance for Daylight Saving Time

Problem:
We have had a request to not shut down the systems for IPL during the DST window. We have always shutdown each system and "waited" for 1 hour during the Autumn clock change. Now we want to change that.
We have 2 physical machines and 5 production LPARs in a Parallel Syslex. we have z/OS 1.8 and z/OS 1.6, CICS/TS 2.3, IMS 8.1 and IMS 7.1 and DB2 V8.
Currently we have an ETR that reflects UTC, and the SYSPLEX timer which reflects local time, there is no offset set.

London Stock Exchange outage. Lesson to be learnt!


Maybe they should have moved to the mainframe in 2005 instead of building on the Microsoft .NET

Renewing a RACF certificate

This should be two stage process for safety sake but could be completed in one job.

Create and implement new certificate

//*
//* +--------------------------------------------------------------+
//* | NEWCERT1: Rekey certificate and rollover |
//* +--------------------------------------------------------------+
//*
//NEWCERT1 EXEC PGM=IKJEFT01
//SYSTSPRT DD SYSOUT=*
//SYSTERM DD DUMMY
//SYSTSIN DD *
PROF MSGID WTPMSG
/* */
RACDCERT ID(TCPSTC) -
REKEY( -
LABEL('TN3270 SERVER SELF SIGNED CERT')) -

Displaying CHPIDs (D M=CHP)

Displaying channel types

This z/OS operator command provides information about the status and type of channels.

There are two parts to the display:

1. The first section displays the channel path status. The channel path status is relative to the z/OS where the command is issued. That is, a CHPID may be displayed as being offline, but if this CHPID is shared (MIF) by other logical partitions, it may not be offline physically.

IDCAMS SYMBOLICRELATE

We can now use system symbolics in an alias name.

For example...

//DEFALIAS EXEC PGM=IDCAMS

//SYSPRINT DD SYSOUT=*

//SYSIN DD *

    DEF ALIAS(NAME(ISV.SOFTWARE.LINKLIB) -

        SYMBOLICRELATE(ISV.SOFTWARE.&SYSNAME..LINKLIB)) -

        CATALOG(SYS1.UCAT.SOFTWARE)

 

Notes on deleting orphaned VSAM components


If the data or index component of a VSAM cluster become permanently disassociated with a catalog entry one of the options available is to fool the VTOC into thinking the components are "regular" datasets so that they can be deleted or renamed.

(It may well be preferable to try by other means to get the components re-cataloged officially.)

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