October 2011
Intermediate to advanced
510 pages
18h 48m
English
book
IBM IMS Version 12 Technical Overview
by Paolo Bruni, Isabelle Bruneel, Angie Greenhaw, Dougie Lawson, Jorge Alberto Luz Ribeiro, Egide Van Aershot
Content preview from IBM IMS Version 12 Technical Overview
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Chapter 2. System enhancements 63
LCLP The QBUF and MFBP storage pools are included. If the DL/I address
space is used, the DPSB, DLDP, and DBWP storage pools are also
included.
MFBP Message format buffer pool.
PSBW PSB work pool.
QBUF Message queue buffer pool.
WKPL General working pool.
2.8.3 Buffer pools allocation with IMS 12
In IMS 12, the storage for certain database pools is now obtained in 31-bit virtual storage
backed by 64-bit real storage. If you page fix any of these pools and have 64-bit real storage
on your processor, you might see a reduction in the use of 31-bit fixed real frames.
The 31-bit virtual storage for the following database ...
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