Load list areas

Load list areas are areas that appear formatted as the load list in an IMS control region dump. Global areas are in the common storage area (CSA).

Table 1. Load list areas
Load list name IMS block/work area Pool type
DFSABSxx Abend Diagnostic Area, xx=PST number Global
DFSBFSPP DL/I Buffer Handler Pool Global
DFSBLK0x SCD, x=same as nucleus suffix Global
DFSBWLOG BG Write Log Work Area Local
DFSCBTHD Control block table header that points to the storage pools defined in DFSCBT00 Global1
DFSCBT10 Storage pool headers for the pools defined in DFSCBT00 Global1
DFSDLWxx Retrieve Work Area, xx=PST number Global
DFSDMBRS Resident DMBs Global
DFSDSET OLDS Data Set Entry Table Local
DFSEOVOS OSAM DCB Work Area Global
DFS01FXL Fixlist for OSAM I/O Driver Local
DFSINTRS Resident Intent Lists Global
DFSIPB Initialization Parameter Block Local
DFSISIT Ident Table and ISI Storage Global
DFSLCD Logger LCD Global2
DFSLCDST IMS Monitor Logger LCD Global
DFSLLOG X'06' and X'42' Log Records Local
DFSLOCP Storage Management Local Pool Local
DFSLOGxx Log Work Area, xx=PST number Global
DFSLXBC Link Extension Blocks for MSC CTC Global
DFSLXBM Link Extension Blocks and I/O Buffers for MSC MTM links Global
DFSMFDDH MFS Pool Dynamic Directory Hash Table Local4
DFSMFDDP MFS Pool Dynamic Directory Prime Area Local4
DFSMFDD0 MFS Pool Dynamic Directory Entry Area Local4
DFSMFPDS MFS Pool PDS Directory Indexes Local4
DFSMFSTG MFS Pool Staging Buffers Local4
DFSMTCLB CLB (ECB) for DFSCMTIO Global
DFSMTIOT Monitor TIOT Table Global
DFSMTMH MSC Main Storage-to-Main Storage Queue Header Local3
DFSMTMW MSC Main Storage-to-Main Storage Window Local3
DFSOBFPL OSAM Buffer Pool Global2
DFSOBFWA OSAM Buffer Pool Work Area Local
DFSOLRnn OLDS Read DCB where nn must be numeric Local
DFSOSDEB OS/VS2 Fake OSAM DEB Global
DFSPCWAP Communications Work Pool Local
DFSPDBWP Database Work Pool Global
DFSPDMB DMB Pool Global
DFSPFBP MFS Pool Local
DFSPFWA Prefetch Work Area, ECB and Save Sets Local
DFSPPSBW PSB and PSB Work Pool Global
DFSPQBUF Queue Manager Buffers Local
DFSPSBRS Resident PSBs Global
DFSPSTQE Scheduler Sequence Queue Global
DFSPSTxx SAP Work Area, xx=PST number Global
DFSPTPDB Communications Pool Local
DFSPWKAP Working Storage General Pool Global2
DFSRSTEB Restart ECB and Save Sets Local
DFSRSTWA Restart Work Area Local
DFSSBBUF Sequential buffering: SBUF Local
DFSSBCA1 Sequential buffering: SCAR Global
DFSSBDCB Sequential buffering: SDCB Local
DFSSBDSE Sequential buffering: EDSG Local
DFSSBDSG Sequential buffering: SDSG Local
DFSSBITA Sequential buffering: ITASK storage for overlapped I/O Global
DFSSBPSS Sequential buffering: SBPSS Global
DFSSBPST Sequential buffering: SBPST Local
DFSSBRAN Sequential buffering: SRAN Local
DFSSBSBU Sequential buffering buffers Local
DFSSBSCD Sequential buffering: SBSCD Global
DFSSBWO Sequential buffering: DFSSBWO Local
DFSSLX SCD Latch Extension Global
DFSSSCT Subsystem Control Table Local3
DFSSTAEB STAE Work Area Local
DFSSTPEB Stop Region ECB, Save Sets and Work Area Local
DFSSTPWA Stop Region Message Work Area Local
DFSTRMWK Modify/Terminate Task Save Sets, ECB and Work Area Local
DFSTSAV Temporary Save Sets Local
DFSVRFXL Fixlist for EXCPVR Local
DFSXCWxx Exclusive Control Enqueue/Dequeue Work Area, xx=01-99 Global2
DFSZIBxx ZIB/FAQE Pool, xx=01-99 Global
Notes:
  1. A large number of storage pools are defined in module DFSCBT00. The contents directory element (CDE) name for storage in a given control block table (CBT) pool is #xxxxyyy, where xxxx is the pool name, and yyy is a number from 001 to 999. See Table 1 for a description of the CBT pools.
  2. When you use the local storage option (LSO), all these areas are obtained from local storage. When you use Fast Path and LSO, DFSLCD, DFSDBUFF, and DFSXCWxx remain in global storage. When you select LSO = S, DFSLCD and DFSPWKAP remain in global storage.
  3. IMS constructs these areas at abend time. They consist of copies of the subject areas preceded by one word containing the original address of the area.
  4. IMS builds these areas in extended private storage.