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All z/OS Releases

This list describes the logical parmlib members available in the various z/OS architectures. Use this list to detect “dead” or inactive logical parmlib members in your z/OS system:

ADYSETxx

Contains controls for dump analysis and eliminate (DAE) processing

ALLOCxx

Contains the defaults for allocation requests

APPCPMxx

Contains the APPC/MVS LU specifications

ASCHPMxx

Contains the APPC/MVS transaction scheduler and initiator class definitions

BLSCECT

Contains controls for dump formatting exit routines

BPXPRMxx

Open Edition z/OS parameters.

CLOCKxx

Sets the TOD (time‑of‑day) clock prompt.

CNGRPxx

Contains the console group definitions

CNLxxxxx

Contains the message language translation exits

COFDLFxx

Contains controls for the data lookaside facility (hiperbatch)

COFVLFxx

Contains controls for the virtual lookaside facility

COMMNDxx

Contains the list of commands issued after initialization

CONFIGxx

Contains the reconfiguration options for processors, storage, and channel paths

CONSOLxx

Defines console configurations

COUPLExx

Contains controls for the cross‑system coupling facility (XCF)

CTIGRS00

Contains the trace options for global resource serialization

CTIGXCF00

Contains the trace options for the cross‑system coupling facility (XCF)

CTIRSM00

Contains the trace options for the real storage manager

CTncccxx

Contains the Component Tracing Option

CVSLLAxx

Defines the list of libraries that can be refreshed in LLA

DEVSUPxx

Contains controls for the data record capability compaction formation of a 3480 subsystem

DIAGxx

Contains the common storage tracking GETMAIN/FREEMAIN/STORAGE trace

EXITxx

Contains the installation exits for allocation decisions

EXSPATxx

Contains controls for recovery from excessive spin conditions

GRSCNFxx

Contains the serialization controls for globally shared resource

GRSRNLxx

Contains the resource name list for global resource serialization

GTFPARM

Contains Global Trace Facility (GTF) controls

IEAABD00

Contains SYSABEND controls

IEAAPFxx

Contains the list of authorized program libraries

IEAAPP00

Contains the list of authorized user I/O appendage ratios

IEACMD00

Contains controls for IBM commands processed during initialization

IEADMP00

Contains sysdump controls

IEADMR00

Contains sysdump controls

IEAFIXxx

Contains the directory of modules to fix in real storage

IEAIPSxx

Contains performance parameters for the System Resource Manager (workload controls)

IEAOPTxx

Contains resource management controls for the System Resource Manager

IEALPAxx

Concatenation list of modules in the modified link pack area (MLPA)

IEAPAK00

Contains the list of modules in LPALSTxx that are loaded between page boundaries to reduce page faults

IEASLPxx

Contains controls for slip commands

IEASVCxx

Contains controls for user supervisor calls (SVCs)

IEASYSxx

Contains the IPL directory

IECIOSxx

Contains the controls for the missing interrupt handler (MIH)

IEFSSNxx

Contains the controls for the subsystem name table

IGDSMSxx

Contains controls for System Managed Storage (SMS)

IGDDFPKxx

Specifies DFSMS/MVS components licensed

IKJPRM00

Contains time‑sharing controls for TSO/TCAM

IKJTSO00

Contains controls for programs authorized through TSO services

LNKLSTxx

Contains the directory of data sets concatenated to linklist

IPCSPRxx

Contains controls for IPCS session parameters

LOADxx

Contains controls for the dynamic hardware configuration feature

LPALSTxx

Contains the list of data sets to concatenate into PLPA

MMSLSTxx

Contains controls for the z/OS message service

MPFLSTxx

Contains message controls

NUCLSTxx

Contains the modules the site wants added or deleted from NUCLEUS at IPL

PFKTABxx

Contains definitions for the program function key table

PROGxx

Contains the APF‑authorized program list that allows dynamic update

SCHEDxx

Contains controls for the eligible device table, the size of the master trace table, and programs in PPT

SMFPRMxx

Contains SMF options

TSOKEY00

Contains time sharing controls for TSO/VTAM

VATLSTxx

Contains the volume attribute list

XCFPOLxx

Contains controls for the cross‑system coupling facility (XCF)