Oracle Performance Analysis 1: Enabling SQL tracking and obtaining trace files
When there is an issue with Oracle query efficiency, we often need to understand the problem so that we can provide a solution to the problem. Oracle provides the trace information for SQL Execution, including the text information of SQL statements, execution statistics, waiting during processing, and information generated during the parsing phase (such as generating an exe
Directory
Tracking architecture
Tracking configuration Files
SQL Tracking Service
Query trace Data
Custom Tracking Service
One of the most powerful features of Windows Workflow Foundation is tracing. It enables you to monitor events, activity properties, and custom data in your workflow. In this column, I'll exam
The following articles mainly describe Oracle tracking events, including the specific content of an Oracle tracking event, and Oracle tracking event 2: Detailed description of Oracle tracking events. The following describes the specific content of the article.
1. Oracle tracking
Http://www.oschina.net/project/tag/122/bugtracker
Project management and Defect tracking tool Redmine
Redmine is an open-source, web-based project management and defect tracking tool. It uses calendars and Gantt charts to support project and progress visualization. It also supports multiple project management. Redmine is a free and open source software solution that provides integrated project
, bb_file), read the image sequence by frame, and perform algorithm processing. Processframe consists of four modules (processed sequentially): Tracking module, detection module, integrated module and learning module;
6.1, Tracking module: track (IMG1, Img2, Points1, points2);The track function completes the tracking prediction of the feature point of the previo
Oracle SQL tracking method:
1. SQL _trace
Enable tracking: Alter session set SQL _trace = true;
Mark the trace file: Alter session set tracefile_identifier = 'look _ for_me ';
Stop tracking: Alter session set SQL _trace = false;
You can use the tkprof tool to generate the last generated trace file.
2. tracking code 1
This article uses Java processes to illustrate 1. View the CPU usage of the Java process and its threads First use PS-EF to find the Java process ID # ps-ef|grep Java Then use the top-p PID command to view the CPU used by the process, for example: [[Email protected] ~]# top-p 23386top-11:10:52 up 124 days, 19:18, 2 users, Load average:0.00, 0.00, 0.00Tasks:1 Total, 0 running, 1 sleeping, 0 stopped, 0 zombieCpu (s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%stmem:16294180k Tota
the process of understanding process scheduling and process switching during the time-tracking analysis process20135111 Li Guangji Original works reproduced please specify the source + "Linux kernel analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000I. Experimental requirements :1, the topic self-proposed, the content revolves on the process scheduling time and the process switch carries on;
2, can combine the key code, experime
Many times before, Conntrack as a link tracking mechanism, if it is extensible, then it will be a very exciting thing, when you read the n multi-document code, you find that it is indeed extensible, but not excited, because you may find:1. It can register an account extension, but the counting mechanism is primitive;2. I want to add a new extension, but have to recompile the kernel;What to do? I used to be angry to accuse the people who had realized i
Many friends who have played flying shooters are impressed by the ability to track missiles, which are often invincible, but the enemy's missiles may be a nightmare for the player. In fact, the implementation of the missile tracking method is not complicated, only need some simple plane analytic geometry knowledge can be done.The algorithm analysis assumes that the rotational angular velocity of the missile is Omega and the motion speed is v. Shows th
The startup, shutdown, and error tracking of the Tomcat service under Linux, after remote connection to the server, typically starts the shutdown of the Tomcat service in several ways:1). Start the Tomcat serviceGo to the Bin directory under the Tomcat home directory and execute the following command:./startup.sh2). Turn off the Tomcat serviceGo to the Bin directory under the Tomcat home directory and execute the following command:./shutdown.shThere i
); In the beginning:Through the above analysis, the whole high and low end memory is how to determine the basic is clear, here to summarize:In the ARM architecture, the high-low segment memory is automatically configured by kernel boot parameters ([email protected] and vmalloc=size), and there is no high-end memory in the normal arm system without special configuration. Unless your system has large RAM or Vmalloc configuration, high-end memory is likely to occur.Above is my high-low-end memory l
argc, char **argv){printf (debugfmt "This is main\n", Debugargs);Funca ();printf (debugfmt "This is main\n", Debugargs);FUNCB ();printf (debugfmt "This is main\n", Debugargs);return 0;}[Email protected]:~/cpropram/2# gcc-wall funca.c FUNCB.C main.c[Email protected]:~/cpropram/2#./a.outMAIN.C (4)-mainthis is mainFUNCA.C (4)-funca this is functionMAIN.C (6)-mainthis is mainFUNCB.C (4)-FUNCB this is functionMAIN.C (8)-mainthis is main[Email protected]:~/cpropram/2#This is the simple implementation
The design functions are as follows:whichvoid int int low);In the parameter list, the first entry is the grayscale image to be traced, and the second is the output image.The third high is the detection threshold, and the fourth low is the tracking threshold value.voidGratingdetect (Mat graysrc, Mat graydst,intHighintLow ) { intRowNum =graysrc.rows; intColnum =Graysrc.cols; for(inti =0; i ) {Uchar* D_data = graydst.ptr(i); Uchar* S_data = graysrc.p
When using GDB for debugging, GDB can only track one process.
You can set the GDB debugging tool to track the parent or child processes by using directives before the fork function call.
By default, GDB tracks the parent process.
The Set follow-fork-mode Child command sets GDB to track the subprocess after fork.
The set Follow-fork-mode parent setting tracks the parental process.
Note: Be sure to set before the fork function call.
Program test:
#include
#include
#include
int main (void)
Algorithm I see some of the methods of tracking bombs, are to use the conversion of the limit, but also consider the bullet and the aircraft in a certain direction to make some adjustments in a parallel, personally think a bit annoying.And I'm using the direction vector to calculate the tracking bomb, no matter how the coordinate system changes, the relevant calculation is only one, the speed in the directi
Strategy
Trace flag
An overview
Trace flags are used to temporarily set specific characteristics of the server or to turn off specific behavior
Two categories
1. Bol record of the tracking mark
Describe
260 print version information about the extended stored procedure dynamic-link library (DLL).
For more information about __GetXpVersion (), see Creating extended stored procedures.
1204 returns the type of lock that participates in the deadlock a
objectstatemanager– Object state Manager
We already know how to add, update, and delete entity records, and we will change database records. The Entity Framework tracks changes through the object context-controlled Objectstatemanager objects, Objectstatemanager tracks all changes to the entity objects, when the SaveChanges () method is invoked , execute the appropriate T-SQL script.
Objectstatemanager is more advanced than the DataContext Change tracking
The realization of vehicle detection and tracking based on OpenCV
Http://www.cnblogs.com/yanneu/p/6251892.html
Recently, the teacher assigned a job, is to do a video-based vehicle detection and tracking, with about two weeks of time to do a simple, the effect is not ideal, but can not suppress some of their own knowledge to write down, here to put some blog on the network to organize a share to everyone, h
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