1
vote
0answers
25 views

Optimization suggestions for db2 materialized view

I have a view for db2 9.7 which has consolidated o/p from few tables. The view is built and it is working fine I want optimization suggestions on the view SQL CREATE VIEW XYZZ AS SELECT ...
0
votes
1answer
44 views

The materialized view is already optimal and cannot be tuned any further

I have tried DBMS_ADVISOR.TUNE_MVIEW to verify some materialized views created locally. One of the result returns an error: Error report: ORA-13600: error encountered in Advisor QSM-03116: The ...
10
votes
1answer
330 views

Resolving deadlock from 2 tables only related through indexed view

I have a situation where I'm getting deadlocks, and I think I've narrowed down the culprits, but I'm not quite sure what I can do to fix it. This is on a production environment running SQL Server ...
1
vote
0answers
33 views

Monoblock, Multiblock queries?

What exactly mean the terms monoblock / multiblock queries in data warehouses when talking about materialized views? Does a monoblock query just use one data source (a normal table) while a multiblock ...
1
vote
2answers
2k views

Materialized View - Oracle

I have materialized view for which i want to alter its refresh time: REFRESH FORCE START WITH SYSDATE NEXT SYSDATE +1 DISABLE QUERY REWRITE I want to know few things in this. What does NEXT ...
2
votes
2answers
2k views

WITH using INDEX hint in Oracle

I have a fairly complicated query. I have written two different query to accomplish my goal. First one is using WITH, other one is using global temporary tables. First One: WITH A ( KNO .. ) , ...
6
votes
2answers
950 views

Using totals on aggregates to improve performance

I have two tables: details and totals of these details. Details (Slow solution): select OrderId = r.OrderId , TotalQty = SUM(r.Quantity) , ...