Control block table pools
Modules DFSBCB00, DFSBCB30, and DFSBCB90 support get/release requests for blocks in specific storage pools, referred to as 'CBT' pools.
| CBT pool | Description |
|---|---|
| AHDR | Autologon LU headers |
| ADSC | Fast Path DEDB area data set control block |
| AESL | Fast Path DBRC parameter area |
| AWE | Work-to-do element for task communication |
| BCPT | Checkpoint ID table |
| BQEL | Used when a buffer is altered and released at sync point |
| BXQE | Storage manager queue elements |
| CBLK | LU 6.2 CPI communications driven control block |
| CCB | Conversational control block |
| CLLE | Common latch list element |
| CMWU | Save sets/ECB for ITASKs which do not require a PST |
| CSAG | Callable services anchor block (ECSA storage) |
| CSAL | Callable services anchor block (E-private storage) |
| DBPB | Database purge block |
| DBRC | DBRC work area |
| DDIR | Database directories |
| DDRE | DMB directory extension |
| DESC | LU 6.2 descriptor block |
| DG2W | Dispatcher work area section 2 (global storage) |
| DL2W | Dispatcher work area section 2 (local storage) |
| DPST | Dependent region PST: The following blocks
are associated with the dependent region structure:
|
| D1WA | Dispatcher work area section 1 |
| EPST | Fast Path PST extension |
| EQEL | Recoverable in doubt structure queue elements |
| EZS | External subsystem storage |
| FEIB | Front-end message switch interface block |
| FNCB | Used by Fast Path for global command notifies |
| FPB6 | Fast Path 64-bit buffer manager pool |
| FPCP | Used by Fast Path for local commands |
| FSRB | Fast Path wake up/sleep SRBs |
| GESE | Represents a defined external subsystem |
| GIOB | IOB for batch |
| GOWA | OSAM channel programs for batch |
| GQMW | Global queue manager work area |
| GS24 | Global 24-bit save area |
| GSAV | Global save area |
| IAFP | IMS™ advanced future print block |
| IDT | Block used to keep track of identified regions |
| IEQE | In-flight/in-doubt data buffers |
| IOSB | I/O supervisor block for OSAM |
| IRLM | Dependent region block, if IRLM is used |
| KLSD | LSO=X,Y block for each dependent region |
| LCLL | Local common latch list element (E-private storage) |
| LCRE | Local Recovery element (persists across restart) |
| LG24 | Below the 16MB line dynamic SAP save sets |
| LGND | Block used to hold logon descriptor representations |
| LGWA | Log work area |
| LGWX | Log work area extension (private) |
| LPST | PSTs for IMS internal use in local storage |
| LQB | Local queue block (SPQBs and CNTs) |
| LQMW | Local queue manager work area |
| LS24 | Local 24-bit save area |
| LSAV | Dynamic SAP save sets |
| LUB | LU 6.2 LU block |
| L56X | Fast Path database control log record |
| MSGP | Message buffers in global storage |
| OLRK | OLR database block |
| OSWA | OSAM channel program areas |
| PCIB | MFS Partition CIB |
| PDIR | Program directories |
| PF62 | LU 6.2 message prefix block |
| PST | PSTs for IMS internal use in global storage |
| QAB | LU 6.2 queue anchor block |
| QMBA | Queue manager global buffer area |
| QSAV | Save sets with AWEs |
| RACW | RACF® workarea |
| RCNT | Remote communication name table |
| RCTE | Fast Path routing codes |
| RECA | VTAM® receive any buffers |
| RPST | Restart PST |
| RRE | Represents an active thread to an external subsystem |
| SAP | Save area prefix – Includes fixed and dynamic SAPs |
| SIDX | One for each identified external subsystem |
| SLOG | IMS Monitor parameter area block |
| SMB | Scheduler message blocks |
| SOPB | Sign-on parameter list block |
| SRBC | Common SRBs used for data sharing asynchronous NOTIFYs |
| STAT | Database Control (DBCTL) and Database Resource Adapter (DRA) statistics area |
| STTR | Retrieve trace area |
| SVPG | System service parameter list block (global-ECSA) |
| SVPL | System service parameter list block (local-private) |
| TCBT | TCB table |
| TIB | LU 6.2 transaction instance block |
| TTAB | Trace table (31-bit storage) |
| TT24 | Trace table (24-bit storage) |
| USMU | Security block |
| USRD | Blocks used to represent user control block structure |
| UXIC | User exit instance blocks in common storage |
| UXIP | User exit instance blocks in private storage |
| UXSC | User exit static work area in common storage |
| UXSP | User exit static work area in private storage |
| VRPL | VSAM RPL with two save areas |
| VTCB | VTAM terminal control blocks |
| VWA | Volatile work area |
| XMCI | Cross memory ITASK block |
| XPST | Dependent region PST extension |
| X124 | DL/I pool below the 16MB line for MVS/ESA |