-1
votes
0answers
26 views

Best Mysql Performance Booster for Large Datawarehouse [on hold]

What are the most effective and efficient ways to improve the performance of mySQL DB hosting a large Datawarehouse. Please suggest the best methodologies and performance tweaks that should be there ...
1
vote
0answers
52 views

DB Design: Looking for Performance improvement with a Column used in all SQL Queries

I recently got added to a new ASP .NET Project(A web application) .There were recent performance issues with the application, and I am in a team with their current task to Optimize some slow running ...
0
votes
0answers
12 views

Multiple Trace Files or Replay

I am just wondering how useful the replay functionality of SQL profiler is. The issue I have is that I can capture a workload from production with little overhead, however I would not be able to ...
2
votes
2answers
108 views

Need help performance tuning a query

Basically, here is the design of the table (the part that is necessary): id | dt -------- 1 | 2014-05-13 2 | 1900-01-01 3 | 1900-01-01 4 | 2014-05-12 5 | 1900-01-01 So what I am trying to do ...
1
vote
1answer
94 views

Maintenance plan using external tool to execute query and stored procedures giving off no results

My situation is as follows: I am using a third party tool (VisualCron) to run stored procedures and sql queries on several database servers. The stored procedures are from http://ola.hallengren.com/ ...
0
votes
1answer
101 views

How to optimize query

using SQLite3 and the following query, it seems like there should be a better performing way to write this query? Is there? Select Name, Sum(Case When Used Is ...
0
votes
0answers
19 views

Performance One Row With Total Vs Multiple Rows with Seperate Values?

Not 100% sure how to explain this situation but here it goes: I am building an Inventory Database that all items received are entered into and a label is created for each Container, that is going to ...
1
vote
1answer
82 views

Get maximum number with combination of columns [closed]

I have table with columns like AutoID, Number, Name, City, State, Country. What I wanted is the maximum number entered in the “Number” column with the combination of Name, City, State and Country. ...
2
votes
2answers
174 views

What can be done to further enhance performance of Multiple Join and Aggregate Queries?

I have a typical star schema simulated here, and I am mentioning two queries: first query simply joins the fact table with 2 dimension tables and 1 calendar table, and the second query joins and ...
2
votes
2answers
4k views

Get username and/or IP address responsible for a query

I use the following query to find performance improvements in queries: SELECT TOP 20 SUBSTRING(qt.text, (qs.statement_start_offset/2)+1, ((CASE qs.statement_end_offset WHEN -1 THEN ...
5
votes
1answer
403 views

How does order of index affect performance in SQL Server?

I am wondering how does order of index affect performance (ASC, DESC) ? If it affects, why ? And which order should I choose ?
1
vote
1answer
372 views

Question about Oracle's interpretation of “host cpu utilization” in v$sysmetric view

I am studying the v$sysmetric view from Oracle and trying to understand what is Oracle's interpretation of "Host CPU Utilization" It says in the metric_unit as % busy/(idle + busy), but what is busy? ...