resource intensive

Querying the most resource-intensive queries from V$sqlareaSelect B.username Username,a.disk_reads reads,A.executions Exec,a.disk_reads/decode (a.executions,0,1,a.executions) Rds_exec_ratio,A.sql_text StatementFrom V$sqlarea A,dba_users bwhere

1. View questionable SQLSelectsubstr (To_char (s.pct,'99.00'),2)||'%'load, S.executions executes, P.sql_text from(Selectaddress, disk_reads, executions, pct, rank () over (order by dis K_reads desc) Ranking from(Selectaddress, disk_reads, executions,

Original: Initial SQL Server performance issue (4/4): List the most resource-consuming sessionsIn the last 3 articles, we discussed a list of different queries that reflect the current state of the server. Initial SQL Server performance

In the last 3 articles, we discussed a list of different queries that reflect the current state of the server. Initial SQL Server performance issues (1/4): Server overview Initial SQL Server performance issues (2/4): List the sessions

For Windows Phone 8 | Windows Phone OS 7.1   The scheduling task and background proxy allow an application to execute code in the background even if it is not running in the foreground. Different types of scheduling tasks are designed for different

Ubuntu PHP takes up a lot of resources ------to solve the idea---------------------- This is the case in itself, so when using PHP, you should pay attention to the problem of process occupancy. ------to solve the idea---------------------- You're

Original http://www.cnblogs.com/BoyceYang/archive/2013/06/15/3138142.html Read navigation 1. Overview 2.RulesLogic Database Design 3.EnableDesign with efficient Indexes 4.EnableEfficient Query Design 5.EnableLow performance analysis with

In order to optimize the performance of Microsoft SQL Server most effectively, you must be clear about where performance will be maximized in terms of changing circumstances and focus on these aspects. Otherwise, you may spend a lot of time and

_____________Transferred from: Beyondvincent's Blog_____________When developing an iOS application, it is critical that your program has good performance. This is also what users expect, if your program runs slow or slow, will incur the user's bad

The interface is the most critical part of the Android app that directly affects the user experience. If the code is not well implemented, the interface is prone to Dayton and causes the application to consume a lot of memory. Division I do this

Summary of Oracle Performance Tuning recommendationsPrinciple One: Note the connection order in the WHERE clause:Oracle uses a bottom-up sequential parsing where clause, according to which the connection between tables must be written before other

The following small series for everyone to bring a Java concurrent programming _ thread pool use Method (detailed). Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it together. One, the

1respective featuresWith regard to threads and processes, the most classic word we had when we were in college was, "the process is the smallest unit of resource allocation and the thread is Minimum unit of CPU Dispatch. Of course, this sentence is

MySQLserverhasgoneaway solution bitsCN.com First, check whether there is a problem with your space provider. if you are a virtual space, perform the following operations first. 1. if you are a VM user, contact the space provider to check whether the

A few days ago in g+ see Google developers site, there is an Android series of articles, share to personal Weibo, weekend idle to learn to write the next, the simple translation of the next, did not expect a out of hand, six articles are all

In the article "architect portrait," I mentioned some of the mistakes I made in system design, think it is quite meaningful, this article to review their own nearly eight years to do some of the system design, to see some of the more big bloody

In Redis, users can have one server replicate (replicate) another server by executing the slaveof command or setting the slaveof option, which we call the replicated server as the primary server (master), The server that replicates the primary

1.Writing format specification1-1. Unification of size text and space1-2, the date format is clear1-3. Use of BIND variables1-4. Use of table aliases1-5. Try to avoid retrieving unnecessary columns when retrieving1-6. The ORDER by column expressly

Oracle Database OptimizationInformation Management DepartmentDirectoryOne, the SELECT query statement to avoid the use of ' * ' ... ..... ..... ..... ..... ..... ..... ................ 2Second, to reduce the number of database visits: ...... ..... ..

Read Catalogue (1) Select the most efficient table name order (valid only in the rule-based optimizer) (2) connection order in the WHERE clause (3) Avoid using ' * ' in the SELECT clause (4) Reduce the number of accesses to the database (