sql tuning advisor

Some time ago, I had a performance problem with my website, and sometimes the page was very slow to open. It would take more than 10 seconds. I tried a lot of methods, including cache, disable viewstate, and Disable debug mode. The improvements were not obvious. Later, I ran into SQL Server Profiler to check the cause: a slow query dragged down the entire page. Later, the query was optimized, but not many improvements were made. Finally, an index i

First, manually generated SQL Tuning Advisor1. SQL Text Format:DECLAREMy_task_name VARCHAR2 (30);My_sqltext CLOB;BEGINMy_sqltext: = ' SELECT * from dba_segments WHERE owner= ' CLIC ' and segment_type= ' TABLE ';My_task_name: = Dbms_sqltune. Create_tuning_task (Sql_text = My_sqltext,Scope = ' comprehensive ',Time_limit = 60,Task_name = ' Test_sql_tuning_task1 ',De

Tags: file http img Local image HTTPS student engine MSSThe recent project to do thousands of students to face recognition record (currently about 630000 lines) query the last record, it is conceivable that the performance of this piece is a problem. As a shen, get to SQL Server Profiler and Database Engine Tuning Advisor These two jobs are QI.Start to install fo

Original: Database Engine Tuning AdvisorSQL Server provides a tool called Database Engine Tuning Advisor. This tool helps to confirm an optimal set of indexes for a given workload without requiring an in-depth understanding of the database structure or the internal structure of SQL Server. It can also suggest

Label:SQL Server provides a tool called Database Engine Tuning Advisor. This tool helps to confirm an optimal set of indexes for a given workload without requiring an in-depth understanding of the database structure or the internal structure of SQL Server. It can also suggest tuning options for a small subset of proble

Tags: Delete existing image direct Analysis window adjustment based on aggregationSQL Server provides a tool called Database Engine Tuning Advisor. This tool helps to confirm an optimal set of indexes for a given workload without requiring an in-depth understanding of the database structure or the internal structure of SQL Server. It can also suggest

table in my database. Its fields include about rows of data. Here I did not create an index for the info field. Create an SQL statement to simulate the actual query. In this example, we use a simple query statement. Use [zhuyitestdatabase2] -- Remember to add the database with useSelect * from orders where info And saved as a. SQL file (in actual use, a query may be more complex) Start Optimizat

Label:Original: Database Engine Tuning AdvisorDatabase performance is largely dependent on whether the table has a suitable index. However, workloads and data change at any time, and existing indexes may not be entirely appropriate and may require a new index.However, it is very difficult to decide on an index because it can have a negative effect on other queries or other operations because it promotes a query.SQL Server provides the Database Engine

Database performance depends to a large extent on whether there is an appropriate index on the table. But workloads and data change at any time, and existing indexes may not be entirely appropriate, and new indexes may be required. However, it is very difficult to determine the index, because it can be promoted to a query, but it will have a negative effect on other queries or other operations. SQL Server provides the Database Engine

SAA-SQL access advisor (oracle 11.2 and later), saa-sqladvisor I recently used SAA and found that many blogs on the Internet actually have problems using it in subsequent versions after oracle 11.2, Either the version change syntax is changed or incomplete. Take some time to list the use of the new version. **************************************** *1. Introduction**************************************** *

VARCHAR2);ParametersLocation:specifies The directory that would contain the new file,You must use the directory alias as defined by the CREATE directory statement,The Advisor would translate the alias into the actual directory location.Filename:specifies the output file to receive the script commands,The filename can only contain the name and an optional file type of the form.**********************/Connect/as SYSDBACREATE or replace DIRECTORY advisor

Tags: implementation mechanism originally page organizes tables based on free article content index ClustFollowing the book on SQL tuning (SQL tuning or SQL optimization) in the essentials of high-performance SQL

Label:Windows Azure Platform Family of articles Catalog 　　 　　In the previous section, we briefly introduced the Azure Stretch Database Azure SQL Database Stretch Database Overview This section describes how to use SQL Server Upgrade Advisor to evaluate the relevant data tables for a local SQL server 2016 database and

Tags: and fast speaking tuning market buffer way a completely"High-performance SQL Tuning essentials and Case Resolution" a book has been launched, many enthusiastic readers on the contents of the book and some of the specific questions raised questions, because of the numerous readers plus my daily work busy, here on the SQL