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The Introduction of Temp Space for DB2 LUW9.7
? 2013 IBM Corporation
DB2 Temporary Table Space
GuangHong Yu (Marvelyu)
? 2013 IBM Corporation
Agenda
? Products overview
? System Architecture
? Instance Architecture
? Storage models
? Temporary table space
? QA
? 2013 IBM Corporation
Products overview
? 2013 IBM Corporation
Agenda
? Products overview
? System Architecture
? Instance Architecture
? Storage models
? Temporary table space
? QA
? 2013 IBM Corporation
System Architecture
? 2013 IBM Corporation
Agenda
? Products overview
? System Architecture
? Instance Architecture
? Storage models
? Temporary table space
? QA
? 2013 IBM Corporation
Instance Architecture
? 2013 IBM Corporation
Agenda
? Products overview
? System Architecture
? Instance Architecture
? Storage models
? Temporary table space
? QA
? 2013 IBM Corporation
Storage models
? 2013 IBM Corporation
Buffer Pool
? A buffer pool is an area of
memory to cache table and
index data pages
? DB2 default buffer pool :
IBMDEFAULTBP
– Unix : 1000 4KB pages
– Linux / Windows : 250 4KB pages
? Each tablespace must share a
bufferpool
? Bufferpool size must equals to
it’s target Tablespace page
size
DB
Memory
? 2013 IBM Corporation
Agenda
? Products overview
? System Architecture
? Instance Architecture
? Storage models
? Temporary table space
? QA
? 2013 IBM Corporation
Tablespace
? A database object which hold
the actual table / index data
? Page is the basic I/O unit
? Type of space management of
tablespace
– SMS : System Managed Space
– DMS : Database Managed Space
– Auto : Same with DMS but be able
to allocate new space automatically
? 2013 IBM Corporation
Temporary table space
? A temporary table space contains temporary tables. Temporary table
spaces can be system temporary table spaces or user temporary table
spaces.
? System temporary table spaces hold temporary data required by the
datab
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