2014-06-25 BaoxinjianI. Summary
SQL Trace is an Oracle-provided means for SQL tracing and is a powerful auxiliary diagnostic tool. SQL Trace is a very common method in the diagnosis and resolution of daily database problems.In general, a single trace can be divided into the following steps:1. Define the range of targets that need to be tracked and enable th
This little exercise is a quick way to rebuild a control file after all the lost control files.1. Back up the control files to the traceSQL>alterdatabasebackup to Trace; Database altered.2.trace text is placed under the User_dump_dest pathSql>Show parameterDump; NAME TYPE VALUE------------------------------------ ----------- ------------------------------background_core_dump string Partialbackground_dump_de
Cross-Site trace (XST) Cross-Site tracking ***
vulnerability description XST *** is a method for collecting user information using server debugging trace ***, because the TRACE method causes the server to return the content sent by the client as is (cookie, HTTP authentication information, etc) *** embed malicious code into a Web file on a controll
Many ASP. NET programmers may still use the Response. Write method in the background to view the value of a variable. In fact, Microsoft provides a good debugging tool, Trace. axd. Its function is mainly to configure ASP. NET code tracking service to control how to collect, store, and display tracing results.
Key options:
1. The default value of localOnly is false. This is easy to understand. If it is true, only
[Translated from mos] enabling dblink's oracle net trace/tracing and mosdblink
Enable dblink's oracle net trace/tracing -- Method for tracking dblink.
Reference Original:DBLINK: How to Enable Oracle Net Tracing for Database links (Doc ID 746917.1)
Applicable:Oracle Net Services-Version 9.2.0.1.0 to 11.2.0.3 [Release 9.2 to 11.2]Information in this document applies to any platform.* ** Checked for relevance
In fact, this article mainly describes how to use trace at two application levels:
GenerallySet a breakpoint for tracking, Or bothManually generate variable output debugging bugThis will not only waste time, but alsoSometimes you forget to delete your own variables.
. NET provides the trace class,This problem can be effectively solved.
tracing debugging tracking: 1. page-level tracking: the
How to call the stack trace and androidstack for Android programs?
You can find out the call stack trace of a program to know who called this interface, and quickly learn the call process of the program, which is very practical. However, it should be noted that it cannot be used in the official code but can only be used for debugging. This is a very resource-consuming situation and causes log flooding.
The
Kuregaku Shandong Normal University"Linux kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000First, the experimental process1. Open GdB and set breakpoints2. Trace to the Do_fork place3. Trace to the Copy_process breakpoint.4. Trace to Ret_from_fork child process creation complete.Second, the code part of the analysisThe system call code
General Mobile Browser, will automatically record our browsing history, which will take up space, I found 360 browser, you can set up no trace Oh! Then how to set it?
haha ~ ~ below let small make up to everyone to talk about it, I hope to help you Oh!
First download and install a unified Android assistant on our Android phone, and then search, download, install, uninstall, and easily manage your Android phone with this Android Market software.
Ste
Set up Tutorials
The simpler way is to go to the "browse record" in the UC browser settings, and then just tick the "clear Browse record" option. or click "Empty" in "Bookmark/collection-> history" to achieve the effect.
Open the UC Browser, and when you visit the page, click the page toggle button below. Then click "No Trace" in the pop-up interface, which opens this function.
Okay, so we'll open the UC browser's no
Copy Code code as follows:
'//----input string and end current page (debug), function can also be named debug----//
Function Trace (s)
On Error Resume Next
Response.Write (S vbCrLf)
Response.End ()
End Function
%>
The following is a modified version of the upgrade, still in the test ...
Copy Code code as follows:
'//----input string and end current page (debug)----//
Function
GDB stack trace and assembly debuggingAnalysis processGcc-g 32-bit assembly on a 64-bit machine using the example.c-o example-m32 Directive error: fatal errorYou need to download the installation library fileCommand: sudo apt-get install libc6-dev-i386Then one more operation will produce the Assembly? Open the GdB debugger with the gdb gdb1 directive? Use the break main directive to set a breakpoint at the main function, and remember to run the code w
extract important information from a slow query log as easy to read and to sort by a specific sorting method.This approach is somewhat similar to having a tkprof in Oracle to format the trace file of Oracle.For the previous slow query log we use Mysqldumpslow to extract the following:suse11b:~ # mysqldumpslow-s At,al/var/lib/mysql/suse11b-slow.logReading mysql slow query log from/var/lib/mysql/suse11b-slow.logCount:4 time=16.87s (67s) lock=0.00s (0s)
SQL Trace AnalysisSELECT * Into sampleFrom tn_trace_gettable (' c:\sample\a.trc ', default)where Eventcalss in (10, 12)--10:rpc:completed is sent when a remote procedure call (RPC) is completed. Typically, some stored procedure calls.--12:sql:batchcompleted occurs when a Transact-SQL batch is completed.(1), to find out which application on the client server sent the statement from the overall database caused by the "read" up to:Select DatabaseId, Host
Use of Trace macros
The trace macro is like the printf function we used in the C language before, so that the program outputs some debugging information during the running process, so that we can understand some of the program status. The difference is that the trace macro outputs only in the debugging status, and the printf function used previously has output i
preparation phase, SQL is formatted with the corresponding function JOIN::p repare For example * is expanded join_opt Imization:sql optimization phase corresponding function Join::optimize nbsp , NB Sp , NB Sp , NB Sp , NB Sp join_execution:sql execution phase corresponding function: JOI N::exec
As you can see, even a very simple SQL will print a lengthy query plan. Of course you can also
We all know that Oracle SQL Trace and 10046 event are common tools used to diagnose Oracle database performance. However, when the level is over 1, 10046 events are generally called extended SQL trace. It is mainly used to diagnose the performance problems of a single SQL, stored procedure, or session. It has the following advantages:
You can get the actual execution plan for SQL Execution.
You can obtain t
Reprinted from: Http://blog.csdn.net/oujunli/article/details/9102101#replyFor people engaged in Android development, encountering ANR (application not responding) is a more common problem. In general, if there is a ANR occurrence, the system will generate trace files in the/data/anr/directory, by analyzing the trace file, you can locate the cause of the ANR. There are many reasons for the ANR, such as high
Trace Chinese Characters in Unicode (_ crtdbgreport: string too long or IO error) In a unicode project, if it is in debug mode.
When a trace Unicode string is returned, the following message is displayed: _ crtdbgreport: string too long or IO error.
There are two ways to solve this problem
Method 1: replace trace directly with outputdebugstring
Descript
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.