index hit - DB2 Database

xixi

we are using db2 udb v8.1 on windows, is there any monitor tool
telling the index frequent usage? so i know which index picked up
most?

Nov 12 '05 #1

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2598

Blair Adamache

EXPLAIN.

xixi wrote:

we are using db2 udb v8.1 on windows, is there any monitor tool
telling the index frequent usage? so i know which index picked up
most?

Nov 12 '05 #2

Stefan Kraemer

Blair you are right, but this is really a problem.

If you review application & index design it is very difficult to decide
which indexes are no longer required. DB2 provides not much help on
this, snapshots are not much help and I think event monitors can´t be
used on large systems for this.

Have you got any advise, whitepaper, internal notes, step-by-step
procedures, etc. which could help for this?

Many thanks
Stefan
Blair Adamache schrieb:

EXPLAIN.

xixi wrote:
we are using db2 udb v8.1 on windows, is there any monitor tool
telling the index frequent usage? so i know which index picked up
most?

Nov 12 '05 #3

Blair Adamache

If you run the Index Advisor (comes up under the Design Advisor in v8 I
think) it can tell you which indexes are not required if you have an
accurate picture of your workload.

Stefan Kraemer wrote:

Blair you are right, but this is really a problem.

If you review application & index design it is very difficult to decide
which indexes are no longer required. DB2 provides not much help on
this, snapshots are not much help and I think event monitors can´t be
used on large systems for this.

Have you got any advise, whitepaper, internal notes, step-by-step
procedures, etc. which could help for this?

Many thanks
Stefan
Blair Adamache schrieb:
EXPLAIN.

xixi wrote:
we are using db2 udb v8.1 on windows, is there any monitor tool
telling the index frequent usage? so i know which index picked up
most?

Nov 12 '05 #4

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