ENQ/DEQ summary

Table 1 shows major and minor ENQ/DEQ names and the resources that issue the ENQ/DEQ. These names are resources at the SYSTEM or SYSTEMS level.
Table 1. Summary of major and minor ENQ/DEQ names and resources
Major (QNAME) Minor (RNAME) Resource - using modules
BWODSN Cluster name Serializes the deletion of a VSAM cluster.
IGDCDS COMMDS, ACDS, or SCDS data set name SMS IGDCSDSS
IGDCDSXS COMMDS, ACDS, or SCDS data set name SMS IGDCSDSS.

This is a device RESERVE rather than an ENQ macro.
SERLOG LOGREC data set LOGREC data set - IFCZIHND
SPFDSN dsname ISPCRESV, ISPCRELS
SPFEDIT dsname + membername (blank for sequential data set) ISPCNQ, ISPCDQ
SYSDSN dsname Data sets. Normally issued under initiator TCB.
SYSIEA01 DMPDSENQ Serializes DUMPDS commands. IEECB923, IEECB926, IEECB910
DPLxxx Used as serialization mechanism for SVC dumps (data set initialization).
DPLCHAIN Serializes captured dump queue.
IEA Serializes dump data sets. IEAVTABD.
SDDSQ Serializes dump data set queue.
SDPOSTEX IEAVTDSV, IEAVTSDC, IEAVAD00
SDUMPENQ Serializes SVC dump's scheduled dump. IEAVTSDT, IEAVAD00
SYSIEFSD ALLOCTP Serializes teleprocessing device allocations.
ALLOC_PARAMETERS Using Allocation parameters.

Enqueue: IEFAB4A2, IEFAB493, IEFBB401, IEFDAPRM, IEFDB400, IEFEIS01, IEFSALLC

Dequeue: IEFAB4A2, IEFAB4E4, IEFAB493, IEFBB401, IEFDAPRM, IEFDB400, IEFDB402, IEFEIS01, IEFSALLC
CHNGDEVS UCB. IEEMB813, ALLOCATION, DFSMSdss
DDRTPUR Swap unit record or tape device. IGFDU0, IGFDT0, ALLOCATION
DDRDA Swap DASD device. IGFDD0, ALLOCATION
Q4 UCB. IEEVCPU, IEEVPTH, ALLOCATION. Dequeue only: IGC0A05I, CNZK1V38, CNZK1V41, CNZK1V42, CNZK1V51, CNZK1V57.
Q6 Protect key resource. IEFSD161, IEFSD166. Dequeue only: IEFIB620.
Q10 CSCB. IEECB800, IEECB866, IEEMB810, IEEVMNT1, IEEVND6, IEEVSTAR, IEEVWAIT, IEE0303D, IEE0703D, IEE0803D, IEE3703D, IEE5103D, IEFIRECM, IEFJRECM, IEEMB881, IEECB894, IEECFCLS, IEEMB860, IEEVIPL, IEE24110, IEE7903D.

Dequeue: IEESB665, IEFISEXR, IEECB894, IEECFCLS, IEEMB860, IEEVIPL, IEE24110, IEE7903D.
RPLL Job journal data set. IEFXB501
STCQUE Started task control. IEFJSWT, IEEVWAIT, IEEMB860

Dequeue: IEESB670, IEEMB860.
TSOQUE TSO/E data sets. IEFJSWT, IEEVWAIT. IEEMB860

Dequeue: IEESB670, IEEMB860.
VARYDEV Vary device command: CNZK1V38, CNZK1V41, CNZK1V42, CNZK1V51, CNZK1V57, IEEMB813, IEE22110

Dequeue: CNZK1V38, CNZK1V41, CNZK1V42, CNZK1V51, CNZK1V57, IEEMB813, IEE22110

IOS: IOSVCMMN

Dequeue: IOSVCMMN, IOSVCMES
SYSIEWLP dsname for SYSLMOD Data set - HEWLFINT. Dequeue only: HEWLFFNL.
SYSIGGV1 Catalog name Serializes catalog (BCS) opens.
SYSIGGV2 Catalog name Serializes access to catalog (BCS) data sets and control blocks.
SYSIKJBC RBA TSO/E broadcast data set (RBA = relative block address) - IEEVSND2, IEEVSND3, IEEVSDN8, IKJEES10, IKJEES40, IKJEES75, IKJRBBCR
SYSIKJUA OPENUADS User attribute data set - IKJEFA10, IKJEFA20, IKJEFA30, IKJEFLE, IKJEFLL, IKJRBBCR
userid TSO/E users - IKJEFA12, IKJEFA20, IKJEFA30, IKJEFLB, IKJRBBCR, IKJRBBU0. Dequeue only: IKJEFLS.
SYSSMF01 data set SYS1.MAN data set - IEEMB829, IFASMFDP
SYSVSAM dsncatnameL1L2L3* Used by VSAM OPEN/CLOSE/EOV to serialize these three functions for VSAM data sets.
  • dsn = data set name
  • catname = catalogname
  • L1 = RNAME length
  • L2 = data set name length
  • L3 = catalog name length
  • * = ENQ/DEQ control indicator
SYSVTOC volser IGC0007H, IGG020P1, IGG0290E, IGG03001, IGG03213, IGG0325A, IGG0325E, IGG0553A.

Serialize volume labeling SCOPE=SYSTEMS

  • This is usually a device RESERVE rather than an ENQ macro. IGG0290E, IGG03001, IGG03213, IGG0325A, IGG0325E, IGG0553A, IXGC4RPC, IXGD2WRT, IXGL1SDS.
  • The reserve is dequeued by IGC0107H, IGG0RR0E, IGG020P3, IGG03217, IGG0325H, IXGC4DIS, IXGC4RBE, IXGC4RPC, IXGD2WRT, IXGF2WRT, IXGL1SDS, IXGL1TSK.
SYSZ#SSI SSI Control structures associated with the subsystem interface (SSI).
SUBSYS_ + name of subsystem A specific subsystem
SYSZADRC Cloud Container Serializes a container in cloud storage for DFSMS.
SYSZADRO Object prefix Serializes a set of objects in cloud storage for DFSMS.
SYSZAPPC APPC_ADDRESS_SPACE  
APPC_PARMLIB  
ATBTRACE.dataset_name Serializes the use of the API trace data set
LUM_WORK_QUEUE  
SDFMDSN.dataset_name Serializes the use of the TP profile data set
SYSZASCH ASBSCAD  
ASBSCIN  
ASCH_ASBSCAD  
ASCH_ASBSCST  
ASCH_PARMLIB  
SYSZATR gname-COMPRESSION Serializes resource manager restart processing with other RRS log stream processing.
lgname-RESTART Serializes access to RRS restart processing and access to restart-related resources. The lgname field is either an installation-defined group of systems or the sysplex name.
lgname-ACTIVE-sysname Serializes access to the execution of RRS on a system, identified in sysname. The lgname field is either an installation-defined group of systems or the sysplex name.
lgname-RM-rmname Serializes access to the use of a particular resource manager name that is identified in rmname in an installation-defined group of systems or the sysplex that is identified in lgname.
RRS-INITIALIZATION-PROCESS Serializes access to initialization processing for RRS.
SYSZATS NED <ned> Tape Device Serialization. ALLOCATION. For self describing devices, where NED is followed by the node descriptor of the device.
DEV <devnum> Tape Device Serialization. ALLOCATION. For devices that do not support self description, where DEV is followed by the 4-digit hexadecimal device number.
SYSZATST DEVICETYPE <devtype> Device Type Serialization. ALLOCATION. Where devtype is one of 3420, 3480, 348X, 3490, 3590.
EPIVALUE <epival> Device Type Serialization. ALLOCATION. Where epival is the EPI value of a 3590 device.
SYSZAUDT
  • ENQDEQ
  • GVTNQMON.SERIALIZATION
  • dataset name of EQDQ monitor output
  • Serializes GRS EQDQ Monitor Instances - ISGAUDIT
  • Serializes GRS EQDQ Monitor processing - ISGAUDIT, ISGAMED1
  • Used to serialize access to a GRS EQDQ Monitor output dataset that is defined by the user - ISGAUDIT, ISGAMEDM, ISGAMED2
SYSZAVM AVM PROCESS QUEUE Serializes various internal AVM queues and data areas - Various AVM modules.
SYSZAXR AXR Used to ensure that only one System REXX address space is active in the system. AXRINIT.
SYSZBDT Installation's MVS/Bulk Data; Transfer Node Name Controlled resource: BITMAPS.
SYSZBNDX volser Used by Common VTOC Access Facilities (CVAF) and ICKDSF to serialize the process of rebuilding a volumes INDEX data set while the volume remains online to all sharing systems in an GRSplex. Resource also used to serialize the process of refreshing the volumes VTOC and expanding the volumes VTOC and/or INDEX while the volumes remains online to all sharing systems. CVAF will issue an exclusize, systems enqueue on this resource when it finds the CVAF caller not serialized on SYSVTOC.volser and ICKDSF is in the process of executing one of these functions.

This version of SYSZBNDX should not be in SYSTEMS exclusion RNL. For RNL details, see RNL processing in z/OS MVS Planning: Global Resource Serialization automatic tasks.
ICKDSF HELD Used by ICKDSF to notify CVAF that is running in all the systems in the GRSplex that the process of rebuilding a volumes INDEX, refreshing a volumes VTOC or expanding a volumes VTOC/INDEX is about to begin. CVAF being notified begins testing if its caller is serialized on SYSVTOC.volser and issues an exclusive enqueue on .volser as needed to obtain proper serialization.

This version of SYSZBNDX should not be in SYSTEMS exclusion RNL. For RNL details, see in .
volserRESERVE Used by ICKDSF to ensure a RESERVE command is issued against a volume that is being processed. It is recommended that this generic resource of SYSZBNDX is not defined to be converted to a global enqueue in the global resource serialization convert RNL.
SYSZBPX AUTOMOUNT_APPEND Used to serialize automount appends.
BPX_ADDRESS_SPACE Used for ENQing OpenMVS address space.
BPXDYNSV Used to serialize dynamic service.
BPXOINIT Used to lock BPXOINIT.
CHECKPOINT Used to serialize checkpoint processing.
DUB_WAITING Used to serialize dub wait counting.
LatchCleanup Used to serialize latch query/cleanup.
PROCINIT Used to lock process initialization.
SHARED_LIBRARY Used to lock Shared Library Structure.
SHUTDOWN Used to serialize shutdown processing against other external commands.
SoftShutDown Used to prevent multiple systems from doing this simultaneously.
STEPLIB_STSL Used to lock Steplib sanction list.
SYSPLEX Used to lock Sysplex Join.
TempOPTN Used to lock Temp OPTN.
USERID_ALIAS Used to lock Userid Alias list.
SYSZBPXF OFSB-CABChain Used to serialize colony PFS address space initialization and termination.
Cab#ID Used to serialize processing for a specific colony PFS.
SYSZCAXW CAXW Serializes access to catalog (BCS) control blocks
SYSZCEA CEA Used to ensure that only one Common Event Adapter (CEA) address space is active in the system. CEAINIT.
SYSZCMDS MTTSWAP Master trace command - CNZM1TRC
SYSZCNZ CONNAME#consname Serializes on the console name.
USERID#username or USERID#username|consname| Serializes on the user ID attempting logon.
SYSZCOMM Various Serialize access to global resource work areas and processing.
SYSZCSD CSDCPUJS CSD field - IEEVCPU, IEFICPUA. Dequeue only: IEF1B620.
SYSZCSV CSVDYNL Serializes LNKLST set for the LNKLST concatenation.
SYSZCT CTAB or ITTaaaa Resource: aaaa is an address. Serializes component trace data areas.
SYSZDAE DATA SET Serializes updates to the DAE data set in the Sysplex environment.
SYSZDMO DMO_REFVTOC_VOLSER_volser Used by the DEVMAN address space to serialize requests to perform the DEVMAN function identified in the minor name of the SYSZDMO resource. Scope is SYSTEMS.
SYSZDSCB volserno + x + dsname Serializes certain DSCB fields in OPEN/CLOSE/EOV with an exclusive enqueue with DISP=SHR for PDSs and any DISP with PDSEs. The “x” is A or S. Blanks are truncated from dsname.
SYSZDSN DATA SET NAME Serializes the root file system. (In a shared file system environment, the "root file system" is known as the version file system.) See Mounting the root file system for execution in z/OS UNIX System Services Planning for more information on serialization of the root file system.
SYSZDSTB ASID + JCT address Data Set Information Table - ENQ/DEQ: IEFAB490, IEFAB4A2. DEQ Only: IEFAB4E8, IEFAB4DE.
SYSZDTSK ISPF/TSO_WINDOW_SERIALIZATION + unique ID for the TSO address space ISPF GUI with TSO line mode support: ISPDTTSK and ISPDTPC

ISPF SVC 93 exit: ISPSC93 and ISPSC93X
SYSZEC16 PURGE Purge data set - IOSPURGA
SYSZGGLG UCB address and CCHHR of block Block in a direct (BDAM) data set.
SYSZGLZ <jobname> Use to ensure that there is only one instance of this zCX instance in the sysplex - GLZINPVT.
SYSZGLZ STORAGETEST Serializes checks of system storage to ensure that any given instance of zCX does not use enough storage to severely degrade overall system performance - GLZINPVT.
SYSZGSYS group name The name of a group of systems in a sysplex, as defined by the IEEGSYS member of SYS1.SAMPLIB.
SYSZGTF1 GTF Generalized trace facility (GTF) processing.
SYSZGTZ IBM® Generic Tracker for z/OS® Used to serialize IBM Generic Tracker startup - GTZINIT.
SYSZHIS HIS Serializes hardware instrumentation services startup.
SYSZHZR HZR Used to serialize Runtime Diagnostics startup - HZRINIT.
RMT Used to ensure that internal invocations of Runtime Diagnostics to itself are only done from one system in a sysplex at a time - HZRWXCOM.
SYSZHZS IBM Health Checker For z/OS Used to serialize IBM Health Checker startup - HZSINIT.
IBM Health Checker For z/OS Used to ensure that the identified global health check is only run on one system in a sysplex- HZSTKSCH.
SYSZIAT none In a JES3 environment, include an entry for the checkpoint data set. The name must be generic.

This is a device RESERVE rather than an ENQ macro.
SYSZIEF IEFOPZ Serializes processing of IEFOPZxx data.
SYSZIGDI
ICMRT.CMDSADDR_LOCKED
SWITCH_CONFIGURATION
SMS VECTOR TABLE
IGDSSI00
IGDSSI01
 SMS IGDICMS0, IGDSSI00, IGDSSI01
SYSZIG DDRSSI Serialize DDR calls to SSI. IGFDT2, IGFDV1, IGFDL1, IGFDI1, IGFDW0. Dequeue Only: IGFDE1
SYSZIGG3 Catalog name For driving AccessSphereNonRLS.
SYSZIGG4 Catalog name Used when the catalog is suspended to cause requests to wait.
SYSZIGG5 Catalog name Used to change the state of catalogs (RLS enable, RLS quiesce, suspended, locked).
SYSZIGGI ASID TSB - IGC0009C, IGG09302
SYSZIGW0   PDSE
SYSZIGW1   PDSE
SYSZIGW3 IGWSHC01 Serializes updates to the VSAM RLS Sharing Control Data Set.
0 Serialization for VSAM RLS
  • Initialization
  • Lock rebuild
  • Display command.
SYSZIGW5 PDSEASRESTART Insures only one PDSE restart.
SYSZIO VIOPGDEL Serializes PAGEDEL command processing.
SYSZILRD Cluster name of pagespace + volser Serializes the deletion of a pagespace.
SYSZIOEZ IOEZNS Locks the z/OS File System (zFS) V1R11 namespace across the sysplex.
IOEZJOIN Serializes joining the zFS V1R11 namespace across the sysplex.
IOEZDC.sysname.aggregatename A temporary ENQ used to ensure not more than one task on a zFS system processes a catchup mount or unmount for a specific aggregate.
IOEZTM.aggregatename Serializes administration of an aggregate.
IOEZLT.aggregatename Indicates ownership of an aggregate.
IOEZLR.aggregatename Indicates ownership of a R/O aggregate by a system before V1R11.
IOEZLQ.aggregatename-qsysname Indicates that an aggregate that is attached R/O is quiesced. The qsysname is the system that issued the quiesced.
SYSZIOS DISPRSV Serializes IOS Display Reserve processing.
DYNAMIC Serializes against dynamic configuration changes.
DYNAMIC.groupname Serializes against dynamic channel path management changes.
EKM Serializes against changes to the Encryption Key Manager parameters.
LPEP Serialize around checking for devices to Vary online in IOSVLPEP.
LPEPSYSRES Serializes multiple instances of IOSVLPEP processing a no paths condition on the SYSRES.
MIH Serializes against changes to the MIH information for devices.
QRQUEUE Serializes the IOACTION STOP|RESUME system command.
SETIOS.groupname Serializes the SETIOS DCM=ON|OFF system command.
SWITCH Serializes against accessing the SWITCH table.
VSWITCH.groupname Serializes the vary switch command.
SYSZIQP IQP Serializes access to initialization processing for PCIE. Only one PCIE address space is created.
SYSZISTC Configuration Restart Data Set ddname RDT segment/checkpoint data set.
SYSZJES2   Look at SYSZxxxx below
SYSZJES2 vvvvvvxxxxx... vvvvvv - Parameter is CKPTDEF CKPTI = (VOLSER=vvvvvv); xxxxx... is the 44- character dsname for the checkpoint data set. Parameter is CKPTDEF CKPTI = (DSNAME=xxxxx...).
SYSZJWTP JSCBWTP Job step messages.
RPL + asid Message data set - (RPL = request parameter list pointer, asid = address space identifier). CNZS1WTP, IEEAB401.
SYSZLLA1 UPDATE LLACOPY
SYSZLOGR L logstreamname Log stream name - System logger in a PLEXCFG=MULTISYSTEM environment.
L systemname logstreamname Log stream name - System logger in a PLEXCFG=MONOPLEX environment, or on a system using a single-system scope CDS data type (LOGRY or LOGRZ).
LOGRY Serializes the system use of LOGRY single-system scope CDS data type for the sysplex - IXGBLF01.
LOGRZ Serializes the system use of LOGRZ single-system scope CDS data type for the sysplex - IXGBLF01.
RECORDER LOGREC data set — IFBSVC76, IFCDIP00, IFCZIHND.
SYSZMCS CNZSCLOT Serializes WTO CONNECT processing.
DELAYED_SVC_PROCESSING Serializes the delayed issue queue.
EMCSMDS#IEAMxxxx Serializes on the EMCS message dataspace.
MFATABLE Serializes multiple SET MSGFLD=xx commands.
MPFTABLE Serializes on the MPF and general user exit (GENX) table.
PDMODE_CHANGE Serializes changes to the PDMODE of the system console.
ROUTE-GROUP--CNID Serializes the ROUTE EMCS console during ROUTE group or ROUTE *ALL command processing.
SETCON MODE COMMAND IN PROGRESS Serializes the SET CON= command.
SETCONMIGRATE Serializes a system joining a sysplex that is undergoing a console services mode migration.
SMT Serializes the cleanup of the SMT during system partitioning.
SMT2 Serializes the overall cleanup of a system during system partitioning.
SYSMCS#MCS, SYSMCS#CL1, SYSMCS#CL2, SYSMCS#CL3, SYSMCS#EMCS Serializes on all MCS/EMCS console updates and sysplex-wide console commands.
UCMSSET Serializes on subsystem entry table.
SYSZMMF1 various Serialization for RLS Locking
SYSZNIP CONSOLE SVC 35 and 87 paths and SVCUPDTE calls for SVC 35 and 87.
SYSZOPEN dsname Opening data sets - IGC0002B
SYSZPCCB PCCB Private catalog control block (PCCB) - ALLOCATION
SYSZPGAD PAGEADD (1) Serializes PAGEADD command processing. (2) Serializes the paging configuration during DISPLAY ASM command to ensure that the command does not change ILRPGDSP. (3) Serializes the DSNLIST and TPARTBLE during processing of a PAGEDEL command.
SYSZPGDL PAGEDEL Serializes PAGEDEL command processing.
SYSZPSWD dsname Password data set - IFG0195U, IFG0195V. Dequeue only: IFG0RR0E.
SYSZRBMF ACTIVE Indicates that MF/1 is already active - ERBMFMFC
SYSZRCF CHPREG Reconfiguration commands: CONFIG CHP, VARY PATH, DISPLAY M=CHP (IEEVCHTR, IEEVRCHP)
SYSZRMM BUFFER CONTROL Buffer management SCOPE=STEP
EDGINERS.volser Serialize volume labeling SCOPE=SYSTEMS
EXIT_IS_ACTIVE Exit recovery serialization SCOPE=SYSTEM
EXIT_id_UNAVAIL Exit recovery serialization, where id can be 100 or 200 representing the last three characters of the DFSMSrmm installation exits EDGUX100 or EDGUX200 SCOPE=SYSTEM
HSKP.dsn.volser Inventory management data set serialization SCOPE=SYSTEMS
INACTIVE Serialize DFSMSrmm activation enabling only a single WTOR to be issued to the operator SCOPE=SYSTEM
MASTER.RESERVE DFSMSrmm control data set serialization at startup and when the CDSID is not yet known SCOPE=SYSTEMS
MASTER.RESERVE.cdsid RMM control data set serialization SCOPE=SYSTEMS
MHKP.ACTIVE Serialize inventory management functions on the same DFSMSrmm subsystem SCOPE=SYSTEM
MHKP.dsn.volser Inventory management data set serialization SCOPE=SYSTEMS
RMM.ACTIVE Ensure only one system run per MVS™ image SCOPE=SYSTEM
SHUTDOWN Serialize DFSMSrmm shutdown and refresh processing SCOPE=SYSTEM
WTOR_ENQ Exit recovery serialization SCOPE=SYSTEM
SYSZRPLW Catalog name + catalog ACB address Serializes request parameter list waits
SYSZssss MONITOR Monitor - IGTD00.
Note: ssss represents the subsystem name
SYSZSCM1 various Used by VSAM RLS when DFSMS CF cache structures or volumes are changing state.
SYSZSCM2 various Used when the VSAM RLS command V SMS,SMSVSAM,FALLBACK is issued.
SYSZSCM3 various Used for >4K DFSMS CF cache processing for VSAM RLS.
SYSZSCM4 various Used for >4K DFSMS CF cache processing for VSAM RLS.
SYSZSCM5 various Used to serialize special lock requests for VSAM RLS.
SYSZSCM6 various Used during VSAM RLS initialization to serialize >4 K DFSMS CF cache processing.
SYSZSCM7 various Serialization for RLS Locking
SYSZSCM8 various Used for TVS display processing.
SYSZSCM9 various Used for TVS initialization.
SYSZSCMA various Used for TVS peer recovery processing.
SYSZSDO DLF resource names Serialize various DLF resources.
SYSZSMF1 BUF SMF buffer.
SYSZSMFD ExitTable Used by IFASMFDL, IFASMFDP, and SET SMF=xx/SETSMF processing to serialize exit tables built for exit validation.
SYSZSMFL Logstream name Used by IFASMFDL to serialize read and deleting from the logstream that is specified in the minor name.
SYSZSPI LISTENERS  
SERVICECALL  
SYSZSVC TABLE Programs that update the SVC table while saving the previous data.
SYSZSYM ASASYMBL Used to serialize updates to system symbols.
SYSZTIOT ASID + DSAB QDB address Task input/output table (TIOT) (ASID = address space identifier, DSAB QDB addr=address of the DSAB QDB). IDACAT11, IDACAT12, IFG0TC0A, IFG019RA, IGC0002A, IGC00030, IGG020RI, IGG08117. Dequeue only: IFG0RR0E, IGG0290D, IGG03001.
SYSZTRC SYSTEM TRACE System trace address space creation - IEAVETAC, IEAVETRM, IEECB8924
SYSZUSRL ucbaddr User label tracks - IFG0202C, IFG0554L
SYSZVARY CPU Reconfiguration commands: 
CONFIG    CPU   (IEECB927)
DISPLAY   M     (IEEMPDM, IEEMPDEV)
PATH Reconfiguration commands: 
CONFIG    CHP   (IEECB927)
DISPLAY   M     (IEEMPDM, IEEMPDEV)
VARY      PATH  (IEEVPTH)
PFID Reconfiguration commands: 
CONFIG PFID (IEECB927)
CONFIG ONLINE/OFFLINE (IEEDMSD1)
DISPLAY M (IEEMPDV1)
STORAGE Reconfiguration command: 
CONFIG    STOR  (IEECB927)
DISPLAY   M     (IEEMPDM, IEEMPDEV)
SYSZVMV ucbaddr Volume mount and verify - ALLOCATION
SYSZVOLS volserno tape or disk volume - ALLOCATION, IFG0194C, IFG0194F, IGF01960, IFG0552N, IFG0554L, IGC0002B, IGC0008B. Dequeue only: IFG0194A, IGG0290D, IFG0194J, IGC0K05B.
SYSZVVDS catalog name Serializes access to the catalog's VVDS parameter list
volser Serializes access to a VVDS
volser + relative control interval number Serializes access to a VVDS record
SYSZWLM WLM_SERVICE_DEFINITION_ INSTALL Programs that install and extract a service definition from the WLM couple data set.
WR_STATE_CHANGE IEEMB812, IWMW3CST, IWMW3IN1, IWMW3RBD
WLM_SYSTEM_IO_PRIORITY IWMD45IO
WLM_SYSTEM_RECOVERY_LATCHES IWMS2LPR
WLM_SYSTEM_sysname Where sysname is the name of a system in the sysplex.

IWMS2TIS and IWMS2XRP
WLM_CACHE_IDENTIFIER_TABLE Controls access to the WLM cache identifier table used to identify LPAR cache entries in the WLM LPAR cluster structure.

IWMC3CST, IWMC3DST, IWMC3EVP, IWMC3GLI, IWMC3LRP, IWMC3LSR, IWMC4TSK, IWMS2MON
DCM_SYSZWLM_xxxxyyyy Controls access to the WLM Index Data Entry that is used to identify I/O Subsystem data in the WLM LPAR cluster structure. The CEC is identified by number (xxxx is the serial number, yyyy is the model number).

IWMC4CPY, IWMC4DEL, IWMC4PRI, IWMC4PRO, IWMC4RFS, IWMC4SIO, IWMC4TM2, IWMC4TWK, IWMC4WRI
SERVER4_appl_env appl_env is the 32-byte name of an application environment, used to enforce the option of restricting an application environment to one address space per subsystem instance per sysplex.

IWMW2CON acquires the ENQ; IWMW2DIS releases it. Global resource serialization releases it during task or memory termination of the connector.
SERVER4_ttttaename tttt is the 4-byte subsystem type; aename is the 32-byte application environment name. Both tttt and aename must be padded by blanks.

IWMW2CON acquires the ENQ; IWMW2DIS releases it. Global resource serialization releases it during task or memory termination of the connector.
SYSZWTOR REPLYnnnn WTOR reply nnnn - CNZS1WTO, IEECB811
SYSZxxxx TTABaddr TRACE tables, where xxxx is the JES subsystem (JES2, JESA, and so forth) and addr is a 4-byte address of a JES2 trace table buffer. Enqueued shared by the JES2 subtask and application address space users of TRACE. Enqueues exclusive by the JES2 event trace log processor.
AWAITING SPOOL SPACE Issued to serialize when the pool of immediately usable spool track groups is depleted, and address spaces must be queued up until the JES2 address spaces refreshes it. xxxx is the subsystem name.
CVCBnnnn nnnn is the checkpoint version number.
TRACK GROUP ALLOCATION  
SYSZZFSC AGGREGATE NAME Specified in uppercase. This is issued by zFS during takeover on the target system and on mount, unmount, attach, detach, create file system, delete file system, rename file system, set file system quota, clone file system and during quiesce (for grow and explicit quiesce) and unquiesce (for grow, quiesce owner system gone down).
SYSZZFSG GROUP NAME (default is IOEZFS) Specified in uppercase. This is issued by zFS during initialization when joining the sysplex group and during termination when leaving the sysplex group.
SYSZZFSP IOE.ZFS.CONFIG This is issued by zFS when changing the size of the user cache, the client cache, the vnode cache, or the vnode cache limit.
ZOSMF dsname Serializes the use of the z/OS Management Facility (z/OSMF) data file system. Do not list the QNAME ZOSMF ENQ in the resource name list (RNL) in the GRSRNLxx member of your installation.