bytes sent via SQL * Net to client430 bytes encoded ed via SQL * Net from client2 SQL * Net roundtrips to/from client2 sorts (memory)0 sorts (disk)6 rows processed
When a table is connected, only two tables can be connected first, and then the connected result is used as a row source to connect to the remaining tables. In the preceding example, the connection sequence is B and A, and then C:B Col3 = 10 col3 = 5
If there is no execution plan, analyze
Analyzes the timeout mechanism of php scripts and analyzes php scripts. Analyze the timeout mechanism of php scripts. When php scripts are developed, max_input_time and max_execution_time are often set to control the timeout of scripts. However, it never analyzes the timeout mechanism of php scripts and analyzes php scripts.
During php Development, max_input_time and max_execution_time are often set to control the script timeout. But I have never tho
Analyze the Ioc container by looking at unused code, and inject dependencies. Analyze the Ioc container by looking at unused code, and inject dependencies ...., ioc is not used. *** The IOC container is understood by producing super module. the interface of super module analyzes the Ioc container by looking at the code that is not used, and relies on injection ...., ioc is not used
/*** Understand the IOC
Security comparison: Sessions are stored on the server, and the client does not know the information. cookies are stored on the client, and the server can know the information. Cookie is not very secure. others can analyze the cookies stored locally and perform cookie spoofing. considering the security, session should be used for security comparison: Session is saved on the server side, the client does not know the information. the cookie is saved on
Use Oracle SQL * Plus to analyze SQL
I. Analyze and execute SQL statements
SQL> set autotrace on; Description: Enables automatic analysis statistics and displays the running results of SQL statements.
SQL> set autotrace traceonly; Note: Enable Automatic Analysis Statistics without displaying the running results of SQL statements. Then you can run the test SQL statement to see the analysis statistics. Genera
To analyze the performance of the SQL statements captured by SQL Profiler, you need to find the statements with high execution frequency and long time.
The tables generated by SQL Profiler are as follows:
Create table [dbo]. [LijiDownload] ([RowNumber] [int] IDENTITY (0, 1) not null,[EventClass] [int] NULL,[TextData] [ntext] COLLATE SQL _Latin1_General_CP1_CI_AS NULL,[ApplicationName] [nvarchar] (128) COLLATE SQL _Latin1_General_CP1_CI_AS NULL,[NTUse
Analyze memory ing process in Linux x86-32 ModePreface
The virtual memory mechanism has become an indispensable part of modern operating systems. It not only provides an independent address space for each program to ensure security, it can also improve the memory usage efficiency through swap with the disk memory. As an important part of the code on Linux, virtual memory management is very large. This is not to find out the Linux source code-level mem
Use the tcpdump command to analyze traceroute in DepthTraceroute: indicates the routing commands used to analyze IP packets in Network diagnosis. Preschool knowledge: There is a TTL field in the IP package. This is the maximum number of jumps. Each time a router passes through, the value is-1 and the value is 0, the packet will be discarded by the router and the ICMP-Timeout packet will be returned to the R
Use the Hive regular parser RegexSerDe to analyze nginx logs and regexserdenginx
1. Environment:
Hadoop-2.6.0 apache-hive-1.2.0-bin
2. Use Hive to analyze nginx logs. The website access logs are as follows:
Cat/home/hadoop/hivetestdata/nginx.txt
192.168.1.128--[09/Jan/2015: 12: 38: 08 + 0800] "GET/avatar/helloworld.png HTTP/1.1" 200 1521 "http://write.blog.csdn.net/postlist" "Mozilla/5.0 (Windows NT 6.1;
Mysql uses profiling to analyze the causes of slow SQL statements.
CleverCode colleagues recently recommended a mysql SQL statement analysis tool profiling, and found that this tool is very good, it can accurately analyze the specific time spent on SQL statements during the Query Process. CleverCode will be summarized here and shared with you.
[Do not repost the original works of CleverCode in the csdn blo
Use the R language to analyze the relationship between the playing sequence and rankings of "I am a singer" and "I am a singer"
Last week, "I am a singer" ended with a quarrel. This season is my most important season. All kinds of discussions on the Internet, especially those who say they don't want to see anyone. In fact, they simply listen to their songs, I think that even those who are not optimistic about it can surprise you and be touched. I used
Introduction: This is to analyze HTML and save the result to an array. Let's take a look at the annotations. :) On the details page, we will introduce PHP, related knowledge, skills, experience, and some PHP source code.
Class = 'pingjiaf' frameborder = '0' src = 'HTTP: // biancheng.dnbc?info/pingjia.php? Id = 323742 'rolling = 'no'>
/*
* Parsehtml. php
* Author: Carlos Costa jordao
* Email: carlosjordao@yahoo.com*
* My notation of vari
more intolerable is the inefficiency of work. ben Si, I finally began to pay attention to this issue and recently began to read
As mentioned in the book, the reason for inefficiency lies in avoiding difficulties and hovering around simple things. generally, people do not know themselves and claim that they only like to do creative things. Those things (in fact they are not certain) are really not interested.
Although I have never been familiar with almost all the inspirational books, I have fo
show who allocated memory in the interval.
Call Tree View
Provides a text-based, chronological, hierarchical view of your application's execution. Use this view:-See what types are allocated and their size.-See which assemblies are loaded as result of method CILS.-Analyze the use of finalizers, including the number of finalizers executed.-Identify methods whereCloseOrDisposeHas not been implemented or called, thereby causing a bottleneck.
Use shell commands to analyze statistics logs and shell commands to collect statistics logs
When you need to collect user log information and analyze user behavior, you can use shell to conveniently retrieve a lot of data and place it in excel for statistics.
For example, for access with the address loadCustomProcess included in the statistics log, sort by access time consumption:Grep "loadCustomProcess"/ho
How to analyze the HTTP or TCP packets captured by the packet capture tool during the test
Http://www.docin.com/p-101479451.htmlC/S communication interface testing often causes many problems due to incorrect request structure or packet sending errors. Usually, you need to use the packet capture tool to capture the sent packets, after further analysis, we can easily see the existing errors. Based on my own summary and experience, I have organized a sim
Use GoAccess to analyze Nginx logs and sed/awk manual analysis practices, goaccessng.pdf
Preface
Websites using Nginx may encounter access traffic exceptions, friendship detection, program bugs, and other sudden situations. At this time, everyone's response must be the first time to analyze logs, then I found that there are dozens of gigabytes of logs, and whether the information needs to be searched by ti
Analyzing the mtml structure and layout of an existing web page, css reference and tracking is a tedious task. Even a comprehensive and bulky dw is insufficient, even the author of the web page is dizzy. Today, we use a feature "Developer tool" provided by ie8 to analyze an existing webpage. It is very consistent with the way humans think about solving complex problems: top-down, module division, and layer-by-layer decomposition.
What are the tools us
Drill down into C # memory management to analyze the difference between value types reference types, boxing unboxing, stacks of several concept combinations-c# beginners are often asked a few questions, value type and reference type, boxing and unpacking, stack, the concept of a combination of the different, read this article should be able to dispel doubts.As the saying goes, the idea of programming is a literary program ape, with experience progra
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