Oracle 11g Dataguard Snapshot standby database functionality, which places the standby in open read/write state and simulates the test in the main library of the production environment. When the standby snapshot standby task completes, you can switch back to the physical repository role. In the state of snapshot standby database, the repository can accept the log from the main library, but it cannot apply the change to the repository.
This article uses Oracle 11g Dataguard
= 4022, listener_ip = All) for S Ervice_broker (message_forwarding = ENABLED, message_forward_size = ten, authentication = CERTIFICATE [Broker_private_249_cer], encryption = DISABLED) The third step is to create login and user Create login Broker_243_login with password= ' qsmc+12345 '; Create user Broker_243_user for login broker_243_login;Generating mapping relationshipsFourth step: Copy the public key backed up by the other party to its own server side, and bind create certificate broker_pub
Agents you should have seen in computer science, such as intelligent agents, multi-agent environments, and so on. All two have the meaning of "replace the principal side operation", but there are some differences.
Agent Although agents, but have their own environment to adapt to the way, the principal only issued instructions, how to complete the instructions by the agent to determine their own, so the agent is also known as Agent identity of the main body;
A: Runtime introduction: Also the interview must answer the partTwo: The message mechanism of runtime#import "ViewController.h"#import#import "Person.h"/* Summary: 1:runtime: The header file must be imported */@interfaceViewcontroller ()@end@implementationViewcontroller/** * 1:objc_getclass ("person") means to get the class object, Sel_registername ("alloc") mea
After checking a lot of information, only the code in one status is triggered for notification broker, but for a function improvement, I need a method for obtaining multiple call statuses (outbound call, incoming call, and call ......) Because the program needs to be triggered proactively, registrynotifyapp is used as the active broker. After checking msdn, it finds that there is no excessive explanation on
Transmission protocol and Security control
WebSphere Message Broker (for short message broker) is an enterprise-class consolidated middleware and service bus that provides extensive connectivity, including MQ, HTTP, FTP, Web services, CICS Dozens of different transmission modes and protocols. In terms of security, each protocol has its own user identity information transmission and processing methods.
Bef
Introduction
IBM WebSphere Message Broker V8 (hereinafter referred to as message Broker) is IBM's key product in the Enterprise Service Bus (Enterprise service buses, ESB) domain, which uses a bus structure to interconnect all application systems Together, the application system is plugged into the bus as a service, or the bus is packaged into a service.
A key feature of message
With the event proxy, you can bind the event handler to the parent element, avoiding the addition of the event handler to multiple child elements. To optimize performance.Event bubbles and target elements are used by the events agent. The target element of any element is the first element. The first thing to notice here is the difference between the target of the event and the currenttarget .Target: Represents the element that triggered the event. currenttarget: The element that represents the e
Due to the current ESB projects are added dynamic configuration, to a demand, through the configuration file or database configuration, on a message flow definition dynamically specify multiple output nodes.Here's a simple little example.A simple message flow is defined first, and the MQ input node is to the MQ output node.1.MQ input Node Specify queue name: xml.inThe 2.Compute compute node specifies the output queue xml.out, WA. OutSET outputlocalenvironment.destination.mq.destinationdata[1].qu
For example, there are more than 1000 Li on the top of the click event, if you traverse the words can be very inefficient to use the event agent, the UL bound event to improve efficiency"UID"> "Li1">1"Li2">2"Li3">3"Li4">4"li5">5"Li6">6"Li7">7"Li8">8"Li9">9"li10">Ten... ..JS code about this.var uid = document.getElementById ("UID"); Uid.onclick = function (e) {e = e | | Window.event;var target = e.target | | e.srcele Ment;if (target.tagName.toLowerCase () = = = ' Li ') {alert (target.innerhtml);}
[helloworldinitiatorqueue]GoUse helloworlddbGoSet nocount onDeclare @ conversationhandle uniqueidentifierBegin transaction-- Start the hello World Service conversationBegin dialog @ conversationhandleFrom Service [helloworldresponseservice]To service 'helloworldrequestservice'On contract [helloworldcontract]With encryption = OFF, lifetime = 600;-- Send a messageSend on conversation @ conversationhandleMessage Type [helloworldrequest] (N 'Hello World ')CommitUse helloworlddbGo-- Check the target
The plane puts the registration information in the tower, sends the data to the tower, and reports some information about the other aircraft.varFeiji =function(name) { This. Name =name;} Feiji.prototype.send=function(msg,to) {Console.log ( This. name+ "Send Message"); Tatai.sned (msg,to);}; Feiji.prototype.jieshou=function(msg) {Console.log ( This. name+ "[Received]" +msg);}varTatai ={all:{}, Zhuce:function(f) { This. all[f.name]=F; }, Sned:function(msg,to) { This. All[to.name].jieshou (msg); }}
("User1 exe!");
}
}
public class User2 extends User {
Public User2 (mediator mediator) {
Super (mediator);
}
@Override
public void work () {
System.out.println ("User2 exe!");
}
}
Test class:
public class Test {
public static void Main (string[] args) {
Mediator Mediator = new Mymediator ();
Mediator.createmediator ();
Mediator.workall ();
}
}
Output:User1 exe!User2 exe!Reprinted fr
Ora-16525: the Data Guard broker is not yet available addressing DGMGRL> disable configuration; ORA-16525: the Data Guard broker is not yet availableConfiguration details cannot be determined by DGMGRLcat drcposdb1.log [SQL] 17:26:08. 181 01001000 1992740965 Operation CTL_ENABLE continuing with warning, status = ORA-16572 17:26:33. 949 Fore policying DMON of db close 17:26:49. 94 8 DMON: Data Guard
Event Notification is integrated into Service Broker. It can capture SQL events asynchronously in the SQL Server instance and route event messages to a specific queue. With minimal system overhead, you can track events that occur in SQL Server instances, for example, user logon, stored procedure compilation, permission modification, and object processing, such as Create/Alter/Drop events for databases, assemblies, roles, or tables ).
Unlike creating y
This demonstrates asynchronous messaging based on Service Broker between different databases in the same SQL Server, where stored procedure serves as the service program. HELLOWORLDDB is the target database, and DOTNETFUN2 is the database that sent the message.
Also, assume that the base object type of server broker has been created, such as MessageType (Xmlmessage), Contract (Xmlcontract), Queue (Sendingq
[OracleDataGuard] use the Broker-role conversion Switchover in the DataGuard environment. 1. Environment Introduction: DataGuard environment: Primary database: oracle10.2.
[Oracle transaction uard] Using Broker-role conversion in the transaction uard environment Switchover I. Environment Introduction Data Guard environment: Primary database: oracle10.2.
[Oracle trusted uard] switch Switchover using the
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