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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Chapter 3. The coupling facility 63
3.6 Best practices for the coupling facility
Here is a summary of our recommendations for best practices for the coupling
facility:
Use CFSizer to size the GBPs.
Start with 64000 for lock structure size.
Start with 64000 for SCA structure size.
Implement Auto Alter for the GBPs as long as enough storage exists in the
CFs for the GBPs to be correctly sized.
Make sure one CF can take over the workload in both CFs in terms of CF
storage.
Ensure that all DB2 structures rebuild into another CF upon any failure.
Duplex the GBPs specifying DUPLEX (ENABLED). Because
GBP-dependency occurs only at the time data is shared, the ALLOWED
parameter requires operator intervention.
Guard against double failure ...
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