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){// Todo auto-generated Catch BlockE. printstacktrace ();}} /*** Start a new database transaction.*/Public static void begintransaction () throws exception {// Wocould be written as a no-op in an EJB container with CMTIf (iscmttransaction ()){Return;}Transaction Tx = (transaction) threadtransaction. Get ();Try {If (Tx = NULL ){Log. debug ("starting new Database Transaction in this thread .");

U P Broadcast RUNNING multicast mtu:1500 metric:1 RX packets:37217 errors:0 dropped:7 overruns:0 frame:0 Tx packets:4541 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7641467 (7.2 MiB) TX bytes:773075 (754.9 KiB) Lo Link encap:local loopback inet addr:127.0.0.1 mask:255.0.0.0 inet6 addr::: 1/128 Scope : Host up loopback RUNNING mtu:65536 metric:1 RX packets:12 errors:0

Label:var database = OpenDatabase ("Student1", "1.0", "Student table", 1024x768 * 1024x768, function () {})this.createtable = function () {Database.transaction (Function (TX) {Tx.executesql ("CREATE table if not exists Stu (ID REAL UNIQUE, name TEXT)",[],function (tx, result) {alert (' Create Stu Table succeeded ');},Function (TX, error) {Alert (' Create Stu Tabl

Whether it is a block device or a network device, the installation and uninstallation of the front-end driver module are completed through xenbus_register_frontend and xenbus_unregister_driver. Netfront_driver is also a xenbus_driver structure. Static struct xenbus_driver netfront_driver = {. Name = "VIF ",. Owner = this_module,. IDS = netfront_ids,. Probe = netfront_probe,. Remove = _ devexit_p (xennet_remove ),. Resume = netfront_resume,. Otherend_changed = backend_changed,}; The front end co

port type [Phyad N] \ [Xcvr internal | exteral] \ [Wol p | u | M | B | A | G | S | D...] \ [Sopass XX: YY: ZZ: AA: BB: CC] \ [Msglvl N] How does one make ethtool settings permanently stored on network devices? Solution 1: The ethtool settings can be saved in the/etc/sysconfig/network-scripts/ifcfg-ethx file to activate the options when the device starts next time. For example, ethtool-s eth0 speed 100 duplex full autoneg off this command sets the eth0 device to full-duplex adaptive, and the spe

A rabbit is at, and its cave is at, 20 m north. A wolf is at, 33 m east of the rabbit: the wolf stared at the rabbit as quickly as the rabbit and asked if the rabbit would be caught before arriving at the hole? Many people on the Internet say they can be caught up, including a similar question, which is 100 yards away from the rabbit and the hole is 60 yards away. So can we? Through computer simulation, you can find the answer without solving the differential equation. To simulate a computer, it

An SQL example that causes a deadlock is provided.Deadlock definition: in a broad sense, it includes the operating system application database. If two Process sessions hold each other's resources, they always wait for the other to release. This situation may cause a deadlock.Misunderstanding: Session blocking is not a deadlock, because one of the sessions can continue to operate.Release: Oracle automatically detects deadlocks and forcibly blocks the release.LEO1 @ LEO1> create table p1 (x int pr

Record a Multicast DNS (mdns) problem-(ifconfig in linux), mdnsifconfig Preface:Recently, the problem of mdns query has been fixed. The problem can be summarized into three parts, which are basic issues: 1. Gateway ifconfig query address 2. encoding of multiple programs occupying one port at the same time 3. mdns protocol and source code Mdns is a protocol used for LAN discovery. For the linux system mounted by the gateway, you must first determine the address used for communication and descri

Notoginsengprintf"%d\n", T1); - return 0; the } + voidDijkstra () { A for(intI=1; iINF; thedis[x]=0; +P.push (Make_pair (0, x)); - while(!P.empty ()) { $PII tp=p.top (); $ P.pop (); - inttx=Tp.second; - if(B[tx])Continue; theb[tx]=1; - for(intI=1; i){Wuyi if(a[tx][i] (!B[i])) { the if(dis[i]>dis[

; import toone.com.cn. bo. user; public class Main {public static void main (String [] args) {// do not write Configuration cfg = new Configuration (); otherwise, Hibernate Dialect must be explicitly s will be reported. The et error message will mislead us. // In fact, we have configured the mysql dialect before. Configuration cfg = new Configuration (). configure (); // For the configure () method, we can introduce its source code for viewing, it will automatically load a default hibernate unde

First, Hibernate's search strategy classification1. Search NowImmediately query the way, call the Get method will only, will immediately go to query the database. Public voidTest2 () {sessionfactory sessionfactory=NULL; Session Session=NULL; Transaction TX=NULL; Try{sessionfactory=hibernateutils.getfactory (); Session=sessionfactory.opensession (); TX=session.begintransaction (); //call the Get method to qu

If you have read VMware's network configuration in detail (a) , now continue to understand;First, use the CMD program under Windows System, ping one by using the ping commandThe network host name or IP address that can be connected:Then ping the same host name on the FEDORA15 system:Should be related to the type of network settings, my network card is the way to set host-only;So in order for the FEDORA15 to be able to ping the host address, let's set the next newThe network card, but does not

WEB SQL allows us to create small databases on the client. It itself is an sqlite embedded databaseFirst, open or create a databasevar db = Window.opendatabase ("TestDB", "1.0", "TestDB", 100000,function () {});This method opens a database, creates a data if the database does not exist, and returns the database example, receiving 5 parametersFirst: Name of databaseSecond One: VersionThird: The name or description of the database displayFourth one: Database sizeFifth: Create a callback (this para

object being protected, the Oracle database lock can be divided into the following categories: DML lock (data locks, lock) to protect the integrity of the data, DDL locks (Dictionary locks, Dictionary locks) to protect the structure of database objects, such as tables, Structure definitions for indexes, internal locks and latches (internal locks and latches), protect the internal structure of the database.The purpose of a DML lock is to ensure data integrity in the case of concurrency. In Oracl

1000 Base-TX. However, 1000 Base-TX is only a rough convention. In the cat5e version, Gigabit Ethernet is called the 1000 Base-T, a ieee standard that has been approved for nearly two years. According to estimates made by institutions that developed the technology, the cost of 1000 Base-TX is basically close, and it is said that the cost of active devices at bot

This article describes how to use JavaScripthtml5 to plot the clock effect. It simulates and displays a clock using the canvas tag and Javascript script of html5, if you are interested, you can refer to the example in this article to describe how JavaScript + html5 canvas draws the clock effect. We will share this with you for your reference. The details are as follows: HTML section: Canvas plotting JavaScript section: Function init () {var canvas = document. getElementById ("canvas

case of concurrency. In Oracle databases, DML locks mainly include TM and TX locks, where TM locks are called table-level locks, and TX locks are called transaction or row-level locks. When Oracle executes DML statements, the system automatically requests a TM-type lock on the table to be operated on. When the TM lock is obtained, the system automatically requests the