Table 9 4 lists all
AUTOCONFIGURE
command parameters.
Table 9 4 Parameters for the autoconfigure command
Keyword Values
Explanation
mem_percent
1 100
Percentage of memory to
default: 80
dedicate to DB2
workload_type
simple, mixed, complex
Type of workload: simple for
default: mixed
transaction processing,
complex for warehousing
num_stmts
1 1 000 000
Number of statements per unit
default: 10
of work
tpm 1 200
000
Transactions per minute
default: 60
admin_priority performance,
recovery,
both
Optimize for better performance
default: both
or better recovery time
is_populated yes,
no
Is the database populated with
default: yes
data?
num_local_apps 0 5
000
Number of connected local
default: 0
applications
num_remote_apps 0 5
000
Number of connected remote
default: 10
applications
isolation
RR, RS, CS, UR
Isolation levels: Repeatable
default: RR
Read, Read Stability, Cursor
Stability, Uncommitted Read
bp_resizeable yes,
no
Are buffer pools re sizeable?
default: yes
9.5.7 Index Advisor
Well designed indexes are essential to database performance. DB2 UDB comes
with a utility called the Index Advisor, which can recommend indexes for specific
SQL queries.
Index Advisor can be invoked either using the
db2advis
command
or using the Design Advisor wizard from the Command Center or Control Center.
This utility accepts one or more SQL statements and their relative frequency,
known as a workload.
The Index Advisor is good for:
Finding the best indexes for a problem query
314
MySQL to DB2 UDB Conversion Guide
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