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Reconstruction of cache pin and procedure in Oracle Library

performed on another session: sql> Create or replace PROCEDURE pining 2 is 3 BEGIN 4 NULL; 5 end; 6/ This operation will be suspended until the first session is completed, and the library Cache pin competition can be observed in the third session: Sql> Select Sid,event from v$session where username= ' Eygle ' 2/ SID EVENT ---------- ---------------------------------------------------------------- 137

Oracle cross-Library query replicates table data

At present most of the database has the need of distributed query. The following is a simple introduction to configuring cross-Library access in Oracle.For example, there are 2 database servers and 2 databases are installed. Database Server A and B. Now implement the database that accesses B in the a library.The first step is to configure a server-side Tnsnames.ora file (tnsnames.ora Network configuration file), which is stored in the following locati

C + + Primer (Fifth edition) learning Note _1_ Standard Template Library-Quick Start

C + + Primer (Fifth edition) learning Note _1_ Standard Template Library-Quick StartWelcome to read the reference, if there are errors or questions, please leave a message to correct, thank youThe Standard Template Library (STL) provides three types of components: containers, iterators, and algorithms, all of which support generic program design standards.There a

Python Depth Learning Library Theano installation of vomiting blood experience __python

Theano is a Python library that can run fast numerical computations on a CPU or GPU. This is a key base in python depth learning, and you can use it directly to create a deep learning model or a wrapper library that simplifies the program greatly. Pip Install Theano It's an error. Theano relies on NumPy and scipy,nump

Async-http-client Open Source Library Learning notes (i)

), " She-wolf.mp3 ");5. Download binary data using FileasynchttpresponsehandlerFileasynchttpresponsehandler is used to obtain binary data, images, sounds and other files. Asynchttpclient client = new Asynchttpclient (); Client.get ("Https://example.com/file.png", New fileasynchttpresponsEhandler (/* Context * *) {@Override public void onsuccess (int statusCode, header[] headers, File response) { Do something with the file ' response '}});6. Increased authorization authentication for HTTP traffic

Javaweb Learning JSP Common tags, el expression operators, Jstl tag Library (6)

tag library * Use * 2, domain object operation * Set: the var attribute to the Web domain setting value: The name of the property: The value of the property property, the scope property: scoping * Page * Request * session * Application = "GF" value= "Fengjie" scope= "page">= "GF" value= "Fengjie" scope= "Request">= "GF" value= "Fengjie" scope= "Session">= "GF" value= "Fengjie" scope= "Application">= "GF"/> * out: Content output * Value: Specified con

iOS learning: Common third-party libraries (Gdataxmlnode:xml parsing library)

iOS Learning: Common third-party libraries (Gdataxmlnode:xml parsing library)Category: iOS development learning 2013-05-30 09:45 4443 People read reviews (0) favorite reports Iosxmlgdataxmlnode Gdataxmlnode Description Gdataxmlnode is a set of classes provided by Google for XML data processing.This class set encapsulates libxml2--dom processing, reads and wri

Multithreaded Programming Learning Notes-Task Parallel Library (iii)

Take the multithreaded Programming Learning note above--Task Parallel Library (i)Take the multithreaded Programming Learning note above--Task Parallel Library (ii) VI. implementation of cancellation optionsThis example learns how to implement a task-based asynchronous operation to cancel the process, and how to know

Poco C ++ library learning and analysis-memory management (2)

Poco C ++ library learning and analysis-memory management (2) 3. sharedptr Sharedptr is another smart pointer implemented based on reference count in the POCO library. Compared with autoptr, Poco: sharedptr is mainly used to provide reference counting service for classes that do not implement the reference counting function (in other words, this class itself is n

Thrift C_glib Library Serialization Learning

(Constguchar* buf,intsize) {Thrifttransport* Transport = Thrift_transport (G_object_new (Thrift_type_memory_buffer,"buf_size", size, NULL)); Thriftprotocol* protocol = Thrift_protocol (G_object_new (Thrift_type_binary_protocol,"Transport", Transport, NULL)); Thrift_memory_buffer_write (transport, (Gpointer) buf, size, NULL); Test* t =g_object_new (Type_test, NULL); Thrift_struct_read (Thrift_struct (t), Protocol, NULL); G_object_unref (transport); G_object_unref (protocol);returnt;}intMain (

Linux Learning (ii) kernel, system call, library

This blog mainly introduces several common concepts in Linux    kernal: Kernel : We know that the hardware of the computer includes: CPU, memory, external memory, etc.The system needs to use the kernel to unify the resource allocation! The kernel is to abstract the hardware resources of the computer, to provide other software, can be understood as a platform.The kernel provides a way to use it: system call  libraries: Because of the limited functionality of system calls, people encapsulate multi

Private Library Video Learning notes-small fresh BBS system development Technology Induction

I have been learning PHP development, a period of time in the 51cto to see the private library Sun Shenli Teacher's video, downloaded his small fresh BBS system development video learning. Now collect the good use of the inside here.After looking at this video, you should understand the whole Web project development process.Public configuration parameters:Date_de

C + + Standard Template Library (STL) learning

1. What is Standard Template Library STLBefore you have learned the declaration and use of function templates and class templates, the previous template is designed by the programmer himself according to their own needs, from their own to declare the template to the last to useTemplates are done by themselves, and these standard template libraries are not written by ourselves, but by some of the great gods, because they often use common templates duri

Third-party Class library learning notes: Customshapeimageview Custom Shape ImageView

app:svg_raw_resource= "@raw/shape_star_3" Here is the specified picture shape under the Res/raw folder which1Com.meg7.widget.SvgImageView2Android:layout_width="50DP"3android:layout_height="50DP"4Android:src="@drawable/hydrangeas"5App:svg_raw_resource="@raw/shape_star_3"6Android:scaletype="Centercrop"/>Here's the point:The actual development, the most commonly used is the circular picture, then the above several are special graphics, to use the circular imageview how to do?Look at the class

Enterprise Library-Data Access Application Block learning Manual (Latest Version)-Part 3

Enterprise Library. net Framework 3.5-entlib v4.1 is the patterns Practices Group. net Framework 3.5 is used to develop a set of Enterprise libraries. The latest version is v4.1, which includes 9 Application blocks, including data access application blocks and Exception Handling application blocks) validation Application Block is very helpful and practical for enterprise application development. Download information: Http://blog.entlib.com/EntLib/ar

Sqlite learning-compile the sqlite static library for other projects to call

Download the source code of sqlite. The sqlite3.c source code and sqlite3.h are header files. You can compile sqlite as a static library and then use it in other projects. The advantage of this is that you do not need to mix the test program with sqlite source, resulting in slow compilation and inconvenient use.Sqlite Compilation 1. Create a win32 Project in vc ++, set Applicationtype to Static libray in The Wizard tool, set Additional options to null

Oracle 12c Migration Pluggable database to heterogeneous library

Tags: Oracle 12c Pluggable migration1. SOURCE Library:Sql> Show PDBscon_id con_name OPEN MODE RESTRICTED---------- ------------------------------ ---------- ---------- 2 pdb$seed READ only NO 3 PDB READ WRITE NO 4 TEST READ WRITE NO2. Target Library:Sql> Show PDBscon_id con_name OPEN MODE RESTRICTED---------- ------------------------------ ---------- ---------- 2 pdb$seed READ only NO 3 PDB READ WRITE NOSql>Migrate the test of the source

Introduction to mxnet Deep Learning Library

Introduction to mxnet Deep Learning LibraryAbstract: Mxnet is a deep learning library that supports languages such as C + +, Python, R, Scala, Julia, Matlab, and JavaScript; Support command and symbol programming; Can run on CPU,GPU, clusters, servers, desktops or mobile devices. Mxnet is the cxxnet of the next generation, Cxxnet learn from the idea of Caffe, but

Python Learning Note 8: Regular expressions for the logo library

Python has a strong standard library. From now on, start learning some of the common features available in the standard library.First look at the regular expression (regular expressions), whose main function is to search for what you want to find by using a specific pattern (pattern) from a string.For example: To find all the numbers from a string, we can do this:Import restr = "Int2str" m = Re.search ("[0-

[Javaweb Basics] 014.struts2 Tag Library Learning

ajax support;According to the first letter of the label can be summed up the following tags:A: ahref= "" >ActionName= "" >Actionerror/>-----If the action's errors has a value then it shows upActionmessage/>-----If the message of action has a value then it appearsAppend>Autocompleter>B:BeanName= "" >C: checkbox>CheckBoxListlist= "" >ComboBoxlist= "" >Component>D: Date/>-----Get date formatDateTimePicker>Debug>Div>DoubleselectList= "" Doublename= "" doublelist= "" >E: ifTest= "" >ElseIfTest= "" >

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