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
IGDCDS	COMMDS, ACDS, or SCDS data set name	SMS IGDCSDSS
IGDCDSXS	COMMDS, ACDS, or SCDS data set name	SMS IGDCSDSS Note: 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. Note: 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, IEECB838, IEECB841, IEECB842, IEECB851, IEECB857.
	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: IEECB838, IEECB841, IEECB842, IEECB851, IEECB857, IEEMB813, IEE20110 Dequeue: IEECB838, IEECB841, IEECB842, IEECB851, IEECB857, IEEMB813, IEE22110 IOS: IOSVCMMN Dequeue: IOSVCMMN, IOSVCMES
SYSIEWLP	dsname for SYSLMOD	Data set - HEWLFINT. Dequeue only: HEWLFFNL.
SYSIGGV1	Catalog name	Serializes catalog opens. Using modules: IDACAT11 IGG0CLF5
SYSIGGV2	Catalog name	Catalog - IGG0CLA3.
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
SYSIKJUA	userid	TSO/E users - IKJEFA12, IKJEFA20, IKJEFA30, IKJEFLB, IKJRBBCR, IKJRBBU0. Dequeue only: IKJEFLS.
SYSSMF01	data set	SYS1.MAN data set - IEEMB829, IFASMFDP
SYSVSAM	dsncatnameL1L2L3*	VSAM data sets (dsn = data set name, catname = catalog name, L1 = RNAME length, L2 = data set name length, L3 = catalog name length, * = ENQ/DEQ control indicator). IDA0200T, IDA0231T, iDA0557A, IGG0CLBG
SYSVTOC	volser	IGC0007H, IGG020P1, IGG0290E, IGG03001, IGG03213, IGG0325A, IGG0325E, IGG0553A. Serialize volume labelling 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).
SYSZ#SSI	SUBSYS_ + name of subsystem	A specific subsystem
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, identified in `rmname`, in an installation-defined group of systems or the sysplex, 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.
SYSZATS	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.
SYSZATST	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. Restriction: 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.Restriction: 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.
	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.
SYSZCAXW	CAXW	Catalog auxiliary work area (CAXWA) - IDACAT11, IDACAT12, IGG0CLBG
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.
SYSZCNZ	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 your 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.
SYSZGSYS	group name	The name of a group of systems in a sysplex, as defined by the IEEGSYS samplib member.
SYSZGTF1	GTF	Generalized trace facility (GTF) processing.
SYSZHIS	HIS	Serializes hardware instrumentation services startup.
SYSZGTZ	IBM® Generic Tracker for z/OS®	Used to serialize IBM Generic Tracker startup - GTZINIT
SYSZHZS	IBM Health Checker For z/OS	Used to serialize IBM Health Checker startup - HZSINIT.
SYSZHZS	<check owner><check name>	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. Note: This is a device RESERVE rather than an ENQ macro.
SYSZIGDI	ICMRT.CMDSADDR_LOCKED SWITCH_CONFIGURATION SMS VECTOR TABLE IGDSSI00 IGDSSI01	SMS IGDICMS0, IGDSSI00, IGDSSI01
SYSZIGF	DDRSSI	Serialize DDR calls to SSI. IGFDT2, IGFDV1, IGFDL1, IGFDI1, IGFDW0. Dequeue Only: IGFDE1
SYSZIGGI	ASID	TSB - IGC0009C, IGG09302
SYSZIGW0		PDSE
SYSZIGW1		PDSE
SYSZIGW3	IGWSHC01	Serializes updates to the VSAM RLS Sharing Control Data Set.
SYSZIGW3	0	Serialization for VSAM RLS initialization lock rebuild display command.
SYSZIGW5	PDSEASRESTART	Insures only one PDSE restart.
SYSZIO	VIOPGDEL	Serializes PAGEDEL command processing.
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.
SYSZJWTP	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.
	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 on SETCON MODE commands.
	SETCONMIGRATE	Serializes on a system IPLing while performing a 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.
	TRACKING_TAB	Serializes access to the TAB, TIDB, and TEDB.
	UCMSSET	Serializes on subsystem entry table.
	UPDATEVSLEVER	Serializes on console updates and lever processing.
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, IGG0CLA3
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 - IRBMFMFC
SYSZRCF	CHPREG	Reconfiguration commands: CONFIG CHP, VARY PATH, DISPLAY M=CHP (IEEVCHTR, IEEVRCHP)
SYSZRMM	BUFFER CONTROL	Buffer management SCOPE=STEP
	EDGINERS.volser	Serialize volume labelling 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	Catalog - IGG0CLA3. Dequeue only: IGG0CLA9.
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 >4K 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 specified in the minor name.
SYSZSPI	LISTENERS
SYSZSPI	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	Catalog Note: This is a device RESERVE and sometimes an ENQ with scope SYSTEM.
	volser	VVDS Note: This is a device RESERVE.
	volser + relative control interval number	VVDS Note: This is a device RESERVE.
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 .