October 2006
Intermediate to advanced
160 pages
4h 9m
English
book
DB2 for z/OS: Data Sharing in a Nutshell
by Paolo Bruni, Mark Anders, KyengDong Park, Mark Rader, Judy Ruby-Brown
Content preview from DB2 for z/OS: Data Sharing in a Nutshell
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46 Data Sharing in a Nutshell
Note that the size in a CFRM policy is in 1 KB blocks, whereas the size for BPs is
in page size blocks.
3.1.2 Sizing the lock structure
The DB2 lock structure (defined as group name_LOCK1) consists of two parts:
The lock table, which is composed of lock table entries (LTEs), where global
locks reside after going through an internal hashing algorithm
The modify lock list, also known as record list entries (RLEs), where update
type locks are kept
The size of the lock table is always an even power of two bytes wide.
The sizing of the lock structure could be accomplished with CFSizer, but there is
an easier way, based on our experience with many DB2 users over the years.
The size of the lock structure is small relativ ...
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