at t renew plan

Tags: style color get C strong fileAutotrace is an sql*plus feature that automatically tracks the generation of an execution plan for SQL statements and provides statistics about the processing of the statement. Sql*plus Autotrace can be used instead of SQL Trace, the benefit of autotrace is that you do not have to format the trace file, and it automatically displays the execution plan for the SQL statement

The following execution plan is printed out. Many friends still don't know. In fact, there are only three statements: Explain plan for the SQL statement you want to view; commit; select * from table (dbms_xplan.display ); ----- Split line ---------------------------------- First, let us know a principle,When you look at the execution plan, start from the first l

Create a power plan what to choose To create a power plan is a timing function, such as how long we do not use the computer automatically into the screen saver or longer without the system automatically sleep state. How do I create a power plan? (Win8.1) 1. Click the "Start" option, as shown below.2. Select the "Control Panel" option to open the entry details

2. Table join(Table join) So far, we have been dealing with a single table. Let's look at the connections in the query. The following query gets the employee information and connects firstname and lastname, so that the returned information is more friendly. SELECT e.[Title], a.[City], c.[LastName] + ', ' + c.[FirstName] AS EmployeeNameFROM [HumanResources].[Employee] eJOIN [HumanResources].[EmployeeAddress] ed ON e.[EmployeeID] = ed.[EmployeeID]JOIN [Person].[Address] a ON [ed].[Ad

Create your own oracle interpretation plan and oracle interpretation plan 1. Explain the plan When an explain plan is used to generate an expected execution plan for a query, the output includes the following: Each table accessed by SQL; Method for accessing each table; The

Cost Calculation Method in execution plan, execution plan cost Concept: Blevel: Binary Height = index height-1 Clustering_factor: Cluster factor, number of blocks in the table to be scanned after index scan, clustering_factor Index scan calculation formula:Cost = Blevel +Ceil (leaf_blocks * Valid tive index selecti.pdf) + Ceil (clustering_factor * Valid tive table selecti.pdf) The test is performed unde

comprehensive evaluation of their own web site content sources and planning, whether industry development, whether it is in line with the principles of search engine optimization, user experience. Second, the new station site content planning strategy For the new station content planning strategy, Nanning SEO small series to share with you, as a new station, we can locate or plan their own new site content planning strategy. 1, we have to conduct

raw service object.Mservice =NewMessenger (service); Mcallbacktext.settext ("Attached."); //we want to monitor the service for as long as We are//connected to it. Try{Message msg= Message.obtain (NULL, messengerservice.msg_register_client); Msg.replyto=Mmessenger; Mservice.send (msg); //Give It some value as an example.msg = Message.obtain (NULL, Messengerservice.msg_set_value, This. Hashcode (), 0); Mservice.send (msg); } Cat

App->activity->custom Dialog Example using Activity to implement a custom dialog boxThe class customdialogactivity itself is nothing special. The key point is its definition in Androidmanifest.xml: android:label=" @string/activity_custom_dialog " Android:theme = "@style/theme.customdialog"> Customdialogactivity uses a custom Customdialog style (Theme). Android apps can use a custom interface style (Theme), Theme as a set of related style definitio

, LocalService.class), mconnection, context.bind_auto_create); Misbound=true; }Call Unbindservice If you need to break the binding to the service. void Dounbindservice () { if (misbound) { // Detach Our existing Connection. Unbindservice (mconnection); false ; } }If you are familiar with socket programming, Client-bound "Bound" Service methods are very similar to using socket communication."Sail

" Android:textcolor= "#ffffffff"/>Icon1″android:layout_width="Wrap_content" Android:layout_height="Wrap_content" Android:layout_marginright= "10dip"/>Use default values where applicable describes the method of using default sounds, vibrations, or both:int default = notification.default_sound; // Notification.default_sound // notification.default_vibrate // Notification.default_all = defaults;Note: The same notification id:r.layout.status_bar_notifications is used in the example, so each call to

/values/attrs.xml for the //Toggleprefattrs.TypedArray A =obtainstyledattributes (r.styleable.toggleprefattrs); Checkboxpreference Childcheckboxpref=NewCheckboxpreference ( This); Childcheckboxpref.settitle (r.string.title_child_preference); Childcheckboxpref.setsummary (r.string.summary_child_preference); Childcheckboxpref.setlayoutresource (A.getresourceid (r.styleable.toggleprefattrs_android_preferencelayoutch ILD,0)); Prefattrscat.addpreference (CHILDCHECKBOXPREF);

shared between multiple//activities, you must is careful about when you read or write//it in order to keep from stepping on yourself.Sharedpreferences preferences = Getsharedpreferences ("Redirectdata", 0); Mtextpref= Preferences.getstring ("text",NULL); if(Mtextpref! =NULL) {TextView text=(TextView) Findviewbyid (R.id.text); Text.settext (MTEXTPREF); return true; } return false; }Other uses are startactivityforresult. This example does not have any new knowledge, but involves

to Home screen launches Launchershortcuts Activity, and the ACTION of the requested intent is set to Intent.action_create_ SHORTCUT, so you can use Intent.ACTION_CREATE_SHORTCUT.equals (ACTION) in OnCreate to determine whether the request is from Add to Home screen or user selection app-> Launcher shorts. If it is from add to Home Screen,launcher Shortcuts Create a shortcut setupshortcut for this activity, and then exit.ADD to Home screen emits intent (run Startactivityforresult), which is expe

The code for this example is very simple: Intents Public voidongetmusic (view view) {Intent Intent=NewIntent (intent.action_get_content); Intent.settype ("audio/*"); StartActivity (Intent.createchooser (Intent,"Select Music")); } Public voidongetimage (view view) {Intent Intent=NewIntent (intent.action_get_content); Intent.settype ("Image/*"); StartActivity (Intent.createchooser (Intent,"Select Image")); } Public voidongetstream (view view) {Intent Intent=NewIntent (intent.action_get

: layout_height= "Wrap_content" android:layout_weight= "1" android:background= "@drawable/green" Android:textappearance= "? Android:attr/textappearancemedium" android:text= "@string/initial_te XT " Android:freezestext=" true "> TextView android:layout_width= "Match_parent" android:layout_height= "Wrap_content"Android:layout_weight= "0" android:paddingtop= "8dip" android:paddingbottom= "4dip"android:textappearance= "? Android:attr/textappearancemedium"Android:text= "@string/no_saves_s

Linux learning plan and linux plan I have been using Linux for a long time. I have used Debian and CentOS, but I have never systematically studied it. Now I have time, and I need it at work, so I want to learn it with my heart. I. Teaching Materials 1. It focuses on "laruence Linux" and systematically learns basic Linux knowledge. 2. carefully read and practice all the content in Linux system management