CICS subpools in the ECDSA

The subpools in the extended CICS® dynamic storage area (ECDSA) are listed, together with the use of each one.

Table 1. CICS subpools in the ECDSA
Subpool name Description
>LGJMC Storage for the journal model resource entries for the log manager domain.
AITM_TAB The autoinstall terminal model (AITM) table entry subpool (DFHAITDS).
AP_TCA31 Storage for the TCA when the task data location option is set to ANY.
AP_TXDEX Storage for the application part of the TXD table.
APAID31 Storage for AIDs above the line.
APBMS Storage used by BMS.
APCOMM31 Storage for COMMAREAs. The storage requirement depends on the size of COMMAREA specified and the number of concurrent users of the application.
APDWE Storage for non-task deferred work elements.
APICE31 Storage for ICEs above the line.
APURD Subpool containing unit of recovery descriptors (URDs) and nontask deferred work elements (DWEs).
ASYNC4K 4K buffers used by asynchronous operations in the sockets domain for non-IPIC protocols.
ASYNC64K 64K buffers used by asynchronous operations in the sockets domain for the IPIC protocol.
BAGENRAL A general-purpose subpool for the business application manager domain.
BAOFBUSG Buffer storage used by the business application manager domain.
BAOFT_ST Storage used by activities in the business application manager domain.
BR_BFBE Storage for the bridge facility block extension.
BR_BFNB Storage for the bridge facility name block.
BR_BMB Storage for the bridge message block.
BR_BSB Storage for bridge start blocks.
BRGENRAL General-purpose subpool used by the bridge.
BRNSBLK Storage used for the bridge numberspace.
BRNSFBLK Storage used for bridge files.
BRPC Storage used for bridge primary clients.
BRVS Storage used for bridge virtual terminals.
BRVSCA Storage used for bridge virtual screen character attributes.
BRVSXA Storage used for bridge virtual screen extended attributes.
CCNV_BCE Storage for character conversion buffer chain elements.
CCNV_CCE Storage for character conversion chain elements.
CCNV_TRT Storage for character conversion translation tables. These tables are addressed by the conversion chain elements.
CCNVG_AN Storage for character conversion anchor blocks.
COLARAY Storage for web control block array storage.
CQCQ_AN Storage for console queue management anchor blocks.
CQCQ_CB Storage for console queue management command input buffers.
DBCTL Subpool that contains the TIE blocks for RMI use, when called by the DBCTL task-related user exit program, DFHDBAT. The TIE is 120 bytes long, and appended to the TIE is the local task work area for this task-related user exit which is, for DFHDBAT, 668 bytes long. This subpool is present only when DBCTL is used. It can be tuned by limiting DBCTL threads or using maximum tasks (MXT) or transaction classes.
DBDBG Storage for DBCTL global blocks.
DCTE_EXT Storage for all extrapartition queue definitions.
DCTE_IND Storage for all indirect queue definitions.
DCTE_INT Storage for all intrapartition queue definitions.
DCTE_REM Storage for all remote queue definitions.
DDAPSESS Storage for LDAP sessions state control blocks.
DDAPSRCH Buffers for LDAP search results.
DDBROWSE Storage for directory manager browse request tokens.
DDGENRAL Storage for directory manager control blocks general information.
DDS_BFBE Storage for directory manager directory elements for the BFBE table.
DDS_BFNB Storage for directory manager directory elements for the BFNB table.
DDS_DCTE Storage for directory manager directory elements for the DCTE table.
DDS_DHT1 Storage for directory manager directory elements for the DHT1 table.
DDS_DHT2 Storage for directory manager directory elements for the DHT2 table.
DDS_DSN Storage for directory manager directory elements for the DSN table.
DDS_D2AC Storage for directory manager directory elements for the D2AC table.
DDS_D2CS Storage for directory manager directory elements for the D2CS table.
DDS_D2EN Storage for directory manager directory elements for the D2EN table.
DDS_D2TN Storage for directory manager directory elements for the D2TN table.
DDS_D2TT Storage for directory manager directory elements for the D2TT table.
DDS_ECCS Storage for directory manager directory elements for the ECCS table.
DDS_ECEV Storage for directory manager directory elements for the ECEV table.
DDS_ECSC Storage for directory manager directory elements for the ECSC table.
DDS_EPAD Storage for directory manager directory elements for the EPAD table.
DDS_FCT Storage for directory manager directory elements for the FCT table.
DDS_ISIA Storage for directory manager directory elements for the ISIA table.
DDS_ISIN Storage for directory manager directory elements for the ISIN table.
DDS_JVMD Storage for directory manager directory elements for the JVMD table.
DDS_MLRL Storage for directory manager directory elements for the MLRL table.
DDS_MLXT Storage for directory manager directory elements for the MLXT table.
DDS_MQII Storage for directory manager directory elements for the MQII table.
DDS_MQIN Storage for directory manager directory elements for the MQIN table.
DDS_NQRN Storage for directory manager directory elements for the NQRN table.
DDS_PIPL Storage for directory manager directory elements for the PIPL table.
DDS_PPT Storage for directory manager directory elements for the PPT table.
DDS_PTPO Storage for directory manager directory elements for the PTPO table.
DDS_PTST Storage for directory manager directory elements for the PTST table.
DDS_PTT Storage for directory manager directory elements for the PTT table.
DDS_REFE Storage for directory manager directory elements for the REFE table.
DDS_RLBN Storage for directory manager directory elements for the RLBN table.
DDS_RTXD Storage for directory manager directory elements for the RTXD table.
DDS_SCAC Storage for directory manager directory elements for the SCAC table.
DDS_SERV Storage for directory manager directory elements for the SERV table.
DDS_SOCI Storage for directory manager directory elements for the SOCI table.
DDS_SOSI Storage for directory manager directory elements for the SOSI table.
DDS_TCL Storage for directory manager directory elements for the TCL table.
DDS_TPNM Storage for directory manager directory elements for the TPNM table.
DDS_TXD Storage for directory manager directory elements for the TXD table.
DDS_USD1 Storage for directory manager directory elements for the USD1 table.
DDS_USD2 Storage for directory manager directory elements for the USD2 table.
DDS_USD3 Storage for directory manager directory elements for the USD3 table.
DDS_USD4 Storage for directory manager directory elements for the USD4 table.
DDS_WBST Storage for directory manager directory elements for the WBST table.
DDS_WBUR Storage for directory manager directory elements for the WBUR table.
DDS_WSRD Storage for directory manager directory elements for the WSRD table.
DDS_WURS Storage for directory manager directory elements for the WURS table.
DDS_W2AT Storage for directory manager directory elements for the W2AT table.
DDS_W2RL Storage for directory manager directory elements for the W2RL table.
DFHAPDAN A general subpool for application domain storage above 16 MB but below 2 GB.
DFHD2CSB Storage for control blocks representing DB2® threads created by the CICS/DB2 adapter.
DFHD2ENT Storage for control blocks representing DB2ENTRY definitions.
DFHD2PKG Storage for control blocks representing DB2 PACKAGESET definitions.
DFHD2TRN Storage for control blocks representing DB2TRAN definitions.
DFHECCD Storage for event capture data.
DFHECCS Storage for event capture specification blocks.
DFHECDQE Storage for event capture deferred filter queue elements.
DFHECEVB Storage for event capture event binding blocks.
DFHECFP Storage for event capture event filter predicate blocks.
DFHECSC Storage for event capture system event calls.
DFHECSF Storage for event capture system filter predicates.
DFHEPAC Storage for event capture event adapter configuration data.
DFHMPGEN Used for allocations of Managed Platform anchor block (MPA) and failed adapter (MPPFA) control blocks.
DFHMPMOD Used for allocations of Managed Platform model (MPMOD) control blocks.
DFHMPPPB Used for allocations of Managed Platform policy (MPPPB) control blocks.
DFHTDG31 Transient data general storage and control blocks. The storage requirement depends on the number of buffers and strings, and on the control interval size specified.
DFHTDIOB Intrapartition transient data input/output buffers. The storage requirement is given by the control interval size of the intrapartition transient data set multiplied by the number of buffers.
DFHTDWCB Storage for the transient data wait elements.
DHCACHE Storage for cached copies of document templates.
DHDBB Storage for document bookmark blocks.
DHDCR Storage for document control records.
DHDDB Storage for document data.
DHDOA Storage for document anchor blocks.
DHFSPATH Storage for HFS path template extensions.
DHGENRAL The general purpose subpool for the document manager domain.
DHSTB Storage for document symbol tables.
DHTLPOOL Storage for document handler template descriptors.
DLI Subpool that contains the TIE blocks for RMI use, when called by the EXEC DL/I task-related user exit program, DFHEDP. The TIE is 120 bytes long, and appended to the TIE is the local task work area for this task-related user exit, which is, for DFHEDP, 4 bytes long. This subpool is present only when EXEC DL/I is used. It can be tuned by limiting DBCTL threads or using maximum tasks (MXT) or transaction classes.
DMSUBPOL The domain manager subpool for general usage.
DP_GENRL Storage for the control blocks for the DP domain.
DPLA Storage for the anchor blocks for instore linked lists of debugging profiles.
DPLE Storage for the elements in the instore linked lists of debugging profiles.
DPLP Storage for the elements in the debug profile that is used for pattern matching.
DPTA Storage for transaction instance state data that is required by the DP domain.
DS_STIMR Storage for dispatcher domain STIMER tokens.
DS_TCB Storage for dispatcher domain TCBs.
DS_VAR The dispatcher domain variable length subpool.
DSBROWSE Storage for dispatcher browse request tokens.
EC_GENRL Storage for the control blocks for the EC domain.
EJMI The enterprise bean method information.
EJOSGENS The enterprise bean general subpool.
EJOSTSKS The enterprise bean task subpool.
EJSPBFBC Storage for web browser control blocks for enterprise beans.
EJSPBVIC Storage for enterprise bean control blocks.
EJSPCFBC Storage for web browser control blocks for CorbaServers.
EJSPCFIC Storage for control blocks for CorbaServers.
EJSPCOMM Storage for anchor blocks for enterprise beans.
EJSPDFBC Storage for web browser control blocks for deployed JAR files.
EJSPDFIC Storage for control blocks for deployed JAR files.
EJSPGVNC Storage for persistent storage for enterprise beans.
EJSPTVNC Storage for transaction-related storage for enterprise beans.
EJSTGENS Storage for control blocks for enterprise bean statistics.
EMBRB Storage for event manager browse blocks.
EMEVA Storage for the event manager event pool anchor.
EMEVB Storage for event manager event blocks.
EMGENRAL General-purpose subpool for event manager domain.
EP_GENRL Storage for the control blocks for the EP domain.
EPADA Storage for event processing adapter management.
EPADI Storage for EP adapter name in EP adapter set.
EPADT Storage for event processing adapter set management.
FC_ABOVE Storage for real VSWA and data buffers for prereads. Each VSWA requires 120 bytes of storage. The maximum number of data buffers for prereads is given by:

(number of strings) x (maximum record length) x (number of files)
FC_ACB Storage for ACBs for VSAM files. Each VSAM file has one ACB, of 80 bytes.
FC_BDAM Storage for BDAM file control blocks. Each BDAM file requires 96 bytes of storage.
FC_DSNAM Storage for data set name blocks. Each file requires a data set name block, which uses 120 bytes of storage.
FC_FCPE Storage for file control pool elements.
FC_FCPW Storage for file control CFDT pool wait elements.
FC_FCUP Storage for the file control CFDT unit of work pool block.
FC_FLAB Storage for file control lasting access blocks.
FC_FLLB Storage for file control lock locator blocks.
FC_FRAB Storage for file request anchor blocks (FRABs). Each transaction that has issued a file control request has one FRAB. The FRAB is retained until the end of the task. There is a free chain of FRABs not currently in use.
FC_FRTE Storage for file request thread elements (FRTE). There is one FRTE for each active file control request per task. A file control request has a FRTE if it meets these conditions:
  • It has not yet stopped its VSAM thread. For example, a browse that has not yet issued an ENDBR.
  • It has updated a recoverable file and a sync point has not yet occurred.
  • It is holding READ-SET storage that must be freed in future.

There is a free chain of FRTEs not currently in use.
FC_RPL Storage for file control request parameter lists.
FC_SHRCT Storage for file control SHRCTL blocks. There are eight of these blocks and each describes a VSAM LSR pool.
FC_VSAM Storage for the file control table (FCT) entries for VSAM files.
FCB_256 File control buffers of length 256 bytes. These buffers are used by file control requests that are made against files with a maximum record length less than or equal to 256 bytes.
FCB_512 File control buffers of length 512 bytes. These buffers are used by file control requests that are made against files with a maximum record length between 256 + 1 bytes and 512 bytes.
FCB_1K File control buffers of length 1 KB. These buffers are used by file control requests that are made against files with a maximum record length between 512 + 1 bytes and 1 KB.
FCB_2K File control buffers of length 2 KB. These buffers are used by file control requests that are made against files with a maximum record length between 1 KB + 1 byte and 2 KB.
FCB_4K File control buffers of length 4 KB. These buffers are used by file control requests that are made against files with a maximum record length between 2 KB + 1 byte and 4 KB.
FCB_8K File control buffers of length 8 KB. These buffers are used by file control requests that are made against files with a maximum record length between 4 KB + 1 byte and 8 KB.
FCB_16K File control buffers of length 16 KB. These buffers are used by file control requests that are made against files with a maximum record length between 8KB + 1 byte and 16 KB.
FCB_32K File control buffers of length 32 KB. These buffers are used by file control requests that are made against files with a maximum record length between 16 KB + 1 byte and 32 KB.
FCB_64K File control buffers of length 64 KB. These buffers are used by file control requests that are made against files with a maximum record length between 32 KB + 1 byte and 64 KB.
FCB_128K File control buffers of length 128 KB. These buffers are used by file control requests that are made against files with a maximum record length between 64 KB + 1 byte and 128 KB.
FCB_256K File control buffers of length 256 KB. These buffers are used by file control requests that are made against files with a maximum record length between 128 KB + 1 byte and 256 KB.
FCB_512K File control buffers of length 512 KB. These buffers are used by file control requests that are made against files with a maximum record length between 256 KB + 1 byte and 512 KB.
FCB_1M File control buffers of length 1MB. These buffers are used by file control requests that are made against files with a maximum record length between 512 KB + 1 byte and 1 MB.
FCB_2M File control buffers of length 2 MB. These buffers are used by file control requests that are made against files with a maximum record length between 1 MB + 1 byte and 2 MB.
FCB_4M File control buffers of length 4 MB. These buffers are used by file control requests that are made against files with a maximum record length between 2 MB + 1 byte and 4 MB.
FCB_8M File control buffers of length 8 MB. These buffers are used by file control requests that are made against files with a maximum record length between 4 MB + 1 byte and 8 MB.
FCB_16M File control buffers of length 16 KB. These buffers are used by file control requests that are made against files with a maximum record length between 8 MB + 1 byte and 16 MB.
FCSTATIC File control static storage.
ICUS Storage for internal control element (ICE) secure extensions.
IE_GENRL Storage for the control blocks for the IE domain.
IECCB Storage for the conversation control blocks in the IE domain.
IECSB Storage for the client state blocks in the IE domain.
IFGLUWID The VSAM IFGLUWID area.
IIGENRAL The IIOP domain general subpool.
IIMBR The IIOP domain request model browse block.
IIMDB The IIOP domain request model block.
IS_GENRL Storage for the control blocks for the IS domain.
ISAQ Storage for IS allocate queue elements.
ISCB Storage for IS control blocks, used to record installed instances of IPCONNs.
ISQA Storage for IS queue attach control blocks.
ISRD Storage for IS remote delete requests.
ISSB Storage for the IS session blocks, each of which is associated with an ISCB subpool.
ISSS Storage for IS session sets.
KEANCHOR Storage Manager domain anchors.
KESTK31 28 KB 31-bit (above the line) stack segments. There is one per MXT plus one for every dynamic system task that is running.
KESTK31E 8 KB 31-bit (above the line) extension stack segments. There is at least one for every ten tasks specified in the MXT limit.
KETASK Storage for kernel task entries.
LD_CDE Storage for loader domain dummy CDEs.
LD_CNTRL Storage for loader domain general control information.
LD_LDBE Storage for LDBE (loader browse element) control blocks for the loader domain.
LD_LDWE Storage for LDWE (loader suspend work element) control blocks for the loader domain.
LD_PLIBE Storage for program library element storage for the loader domain.
LDENRS Storage for the extended CICS nucleus, and 31-bit macro tables that are RESIDENT. The extended CICS nucleus is approximately 50 KB. Programs are defined with EXECKEY(CICS) and link edited RMODE(ANY) without the REENTRANT option.
LDENUC Storage for the extended CICS nucleus and 31-bit macro tables that are not RESIDENT. The extended CICS nucleus is approximately 50 KB. Programs are defined with EXECKEY(CICS) and link edited RMODE(ANY) without the REENTRANT option.
LGBD Storage for log stream name, journal name, and journal model browse tokens for the log manager domain.
LGGD Storage for explicitly opened general logs for the log manager domain.
LGGENRAL The general-purpose subpool for the log manager domain.
LGJI Storage for journal name entries for the log manager domain.
LGSD Storage for log stream data entries for the log manager domain.
LGUOW Storage for unit-of-work data entries for the log manager domain.
LI_PLB Storage for the language interface program language block. One is allocated for each program when control is first passed to it.
L2GENRAL The log manager domain general subpool.
L2OFL2BL Storage for logger block entries for the log manager domain.
L2OFL2BS Storage for browseable stream objects for the log manager domain logger.
L2OFL2CH Storage for chain objects for the log manager domain logger.
L2OFL2SR Storage for stream objects for the log manager domain logger.
MDTTABLE The MDT field attribute table for BMS maps sent through the CICS web interface.
ML_GENRL General storage for the ML domain.
MN_CNTRL Storage for monitoring control blocks general information.
MN_TIMAS Storage for monitoring control blocks identity monitoring area.
MN_TMAS Storage for monitoring control blocks transaction monitoring area.
MN_TRMAS Storage for monitoring control blocks resource monitoring area.
MQM WebSphere® MQ communication storage.
MRO_QUEU Used by the MRO work queue manager.
MROWORKE Used by the MRO work queue manager elements.
NQEAS Storage for NQ domain queue element areas.
NQGENRAL A general subpool used by NQ domain.
NQPOOL Storage for NQ domain enqueue pools.
NQRNAMES Storage for NQRN directory entries.
OTGENRAL The general subpool used by the OT domain.
OTISINST Storage for inflight state of OTS transactions.
OVERLAPD Storage for overlap field merging.
PGCHCB Storage for channel control blocks. This storage contains header information that describes a channel.
PGCPCB Storage for the channel container pool control block. This storage contains header information that describes sets of containers.
PGCPCBCH Storage for the chained container pool control block.
PGCRBB Storage for browses of channel containers.
PGCRCB Storage for channel container control blocks. This storage contains the header information for each container.
PGCSCB Storage for channel container segments.
PGGENRAL Storage for general purpose program manager domain subpools.
PGHMRSA Storage for program handle manager cobol register save areas.
PGHTB Storage for the program manager handle table block.
PGJVMCL Storage for JVM class names.
PGLLE Storage for program manager load list elements.
PGPGWE Storage for program manager wait elements.
PGPPTE Storage for program manager program definitions.
PGPTA Storage for program manager transaction-related information.
PI_GENRL General storage for the pipeline manager (PI) domain.
PI_POLCY Currently not used.
PI_PRSER Currently not used.
PINODEBL Storage for pipeline objects.
PIPEINST Storage for pipeline objects.
PITKDAT Storage for pipeline token data for context token.
PITKPOOL Storage for pipeline tokens.
PITXMAST Storage for Web Services Atomic Transaction (WS-AT) main control block or PI domain transaction control block.
PR_TABLE Storage for PTEs from the PRT.
PTTWSB General storage for pool tokens.
RCLELEM Storage for the web row-column element list storage.
RCTABLE Web table storage.
RLGENRAL The resource lifecycle general subpool.
RMGENRAL The recovery manager general subpool.
RMOFRMLK Storage for recovery manager link objects.
RMOFRMUW Storage for recovery manager unit-of-work objects.
ROWARAY Web row array storage.
RS_FILEL Region status (RS) domain file list storage.
RS_GENRL Storage for the control blocks for the RS domain.
RUNTRAN A transaction manager subpool for run transaction.
RUTKPOOL A subpool for reusable token class.
RXGENRAL A general subpool for RX domain.
RZGENRAL A general subpool for request streams domain.
RZOFRSNR Storage for request streams notification requests.
RZOFRSRG Storage for request streams registration objects.
RZOFRZRS Storage for request streams objects.
RZOFRZTR Storage for request stream transports.
SHGENRAL The general subpool for scheduler services domain.
SHOFSHRE Storage for scheduler services request objects.
SJGENRAL The general subpool for SJVM domain.
SJJ8TCB Storage for TCBs in the SJVM domain.
SMSHRC31 Storage for many control blocks of the SHARED_CICS31 class.
SMTP Line and terminal I/O areas. The storage requirements depend on the amount of terminal and line traffic in the system. The subpool can be tuned by reducing the RAPOOL, RAMAX, TIOAL size, and number of MRO sessions.
SOCKET Storage for socket objects.
SOCKPOOL Socket pool storage.
SOCKSSL Storage for the SSL data related to a socket.
SOGENRAL The sockets domain general subpool.
SOLTE Storage for socket domain listener terminal entries.
SOSTE Storage for socket domain socket terminal entries.
SOTBR Storage for socket domain TCPIPSERVICE browse blocks.
SOTDB Storage for socket domain TCPIPSERVICE blocks.
SOTKPOOL Storage for socket domain socket tokens.
STSUBPOL A statistics domain manager subpool.
SZSPFCCD The FEPI connection control subpool.
SZSPFCCM The FEPI common area subpool.
SZSPFCCV The FEPI conversation control subpool.
SZSPFCDS The FEPI device support subpool.
SZSPFCNB The FEPI node initialization block subpool.
SZSPFCND The FEPI node definition subpool.
SZSPFCPD The FEPI pool descriptor subpool.
SZSPFCPS The FEPI property descriptor subpool.
SZSPFCRP The FEPI request parameter list subpool.
SZSPFCRQ The FEPI requests subpool.
SZSPFCSR The FEPI surrogate subpool.
SZSPFCTD The FEPI target descriptor subpool.
SZSPFCWE The FEPI work element subpool.
SZSPVUDA The FEPI data areas subpool.
TA_GENRL Currently not used.
TASKASOC Storage for sockets domain task association objects.
TD_TDCUB Storage for all the transient data CI update control blocks.
TD_TDQUB Storage for all the transient data queue update control blocks.
TD_TDUA Storage for all the transient data UOW anchor control blocks.
TFUS Storage for TCTTE secure extensions.
TIA_POOL The timer domain anchor subpool.
TIQCPOOL The timer domain quick cell subpool.
TSBRB Storage for temporary storage (TS) browse blocks.
TSBUFFRS Temporary storage I/O buffers. The storage requirement is given by:

(TS control interval size) x (number of TS buffers). The use of temporary storage by application programs affects the size of a number of subpools associated with temporary storage control blocks.
TSGENRAL The amount of storage used by the TSGENRAL subpool. The amount depends on the number of buffers and strings and the control interval size defined for the temporary storage data set.
TSICDATA Storage for TS interval control elements.
TSMBR Storage for temporary storage browse blocks.
TSMDB Storage for temporary storage model blocks.
TSQAB Storage for TS queue anchor blocks.
TSQOB Storage for TS queue ownership blocks.
TSQUB Storage for TS queue update blocks.
TSTSS Storage for TS section descriptors.
TSTSX Storage for TS auxiliary item descriptors.
TSW Storage for TS wait queue elements.
UE_EPBPL The subpool for the user exit program block (EPB).
USIDTBL Storage for the attach security userid table entries (LUITs). See ISC/IRC attach time entry statistics for more information.
WBGENRAL The general subpool for CICS web support.
WBOUTBND Storage for outbound HTTP buffers.
WBPATHN1 Storage for path node elements used for URI map storage for short path names.
WBPATHN2 Storage for path node elements used for URI map storage for long path names.
WBPATHUR Storage used for URI map storage for URI path names.
WBRQB Storage for web request objects.
WBS Storage for inbound web session blocks used for the IPIC protocol.
WBURIMAP Storage for URI mapping elements.
WBURIXT1 Storage for URI mapping element extensions (short).
WBURIXT2 Storage for URI mapping element extensions (long).
WBWRBR Storage for web request browse blocks.
WBVHOST Storage for URI virtual host elements.
WEB_STA Web state-related storage.
WEBELEM Storage for web output element lists.
WEBHTML Storage for web HTML buffers.
WEBINB Storage for web domain storage for incoming data.
WEB327B Web domain 3270 buffer storage.
W2ATOMSE Storage for Web 2.0 atom service elements.
W2ATOMX1 Storage for Web 2.0 atom service extensions.
W2ATOMX2 Storage for Web 2.0 atom service extensions.
W2GENRAL The general-purpose subpool for the Web 2.0 domain.
XMGENRAL The general-purpose subpool for the transaction manager.
XMTCLASS Storage for the transaction manager tranclass definition.
XMTRANSN Storage for transaction manager transactions; one for every transaction in the system.
XMTXDINS The transaction manager transaction definition.
XMTXDSTA The transaction manager transaction definition.
XMTXDTPN The transaction manager transaction definition TPNAME storage.
ZC2RPL Storage for the duplicate RPLs for active tasks. Each active task associated with a z/OS® Communications Server terminal requires 304 bytes.
ZCBIMG Storage for BIND images.
ZCBMSEXT Storage for the BMS extensions for terminals. Subpool storage requirements are 48 bytes for each terminal, surrogate, ISC session, and console.
ZCBUF Storage for the non-LU 6.2 buffer list.
ZCCCE Storage for the console control elements. Each console requires 48 bytes.
ZCGENERL The general-purpose subpool for terminal control.
ZCLUCBUF Storage for the LU 6.2 SEND and RECEIVE buffer list.
ZCLUCEXT Storage for the LU 6.2 extensions. The storage requirement is 224 bytes for each LU 6.2 session.
ZCNIBD Storage for the NIB descriptors. Each terminal, surrogate, ISC session, and system definition requires 96 bytes of storage.
ZCNIBISC Storage for the expanded NIB and response during OPNDST and CLSDST for ISC. Each concurrent logon and logoff requires 448 bytes of storage. The maximum number of concurrent requests is limited by the number of sessions. The storage can be tuned by reducing the number of sessions.
ZCNIBTRM Storage for the expanded NIB during OPNDST and CLSDST for terminals. Each concurrent logon and logoff requires 192 bytes of storage. The maximum number of concurrent requests is limited by the number of terminals. The storage can be tuned by reducing the number of terminals.
ZCRAIA Storage for the RECEIVE ANY I/O areas.
ZCRPL Storage for the RPLs for active tasks. Each active task associated with a z/OS Communications Server terminal requires 152 bytes.
ZCSETB Storage for application control buffers above 16 MB but below 2 GB.
ZCSKEL Storage for the remote terminal entries. Each remote terminal definition requires 32 bytes of storage.
ZCSNEX Storage for the TCTTE sign-on extensions. The storage requirement is 48 bytes for each terminal, surrogate, session, and console.
ZCTCME Storage for the mode entries. Each mode entry requires 128 bytes of storage.
ZCTCSE Storage for the system entries. Each system entry requires 192 bytes of storage.
ZCTCTTEL Storage for the large terminal entries. 504 bytes of storage are required for every terminal, surrogate model, and ISC session defined.
ZCTCTTEM Storage for the medium terminal entries. 400® bytes of storage are required for every IRC batch terminal.
ZCTCTTES Storage for the small terminal entries. 368 bytes of storage are required for every MRO session and console.
ZCTPEXT The TPE extension.
ZCTREST The terminal control transaction restart subpool.
ZCTCTUA Storage for the TCTTE user area. It can be located in one of the following DSAs: SDSA, ECDSA, CDSA, or ESDSA. Its location is controlled by the system initialization parameter, TCTUALOC=ANY|BELOW and the system initialization parameter, TCTUAKEY=CICS|USER. The maximum size can be specified in USERAREALEN operand of the terminal definition. For more information about the terminal definition, see TERMINAL resources.