common maintenance commands for Oracle 10g Dataguard.
Basic common
1. Stop standbySelect process, status from V$managed_standby; --See if the standby is restored in the application logALTER DATABASE recover managed standby database cancel;Shutdown immediate;2. Switch to read-only mode-----switched from Shutdown mode to read-only mode-------Startup Nomount;ALTER DATABASE mount standby database;ALTER DATABASE open read only;-----switched from Application log mode to read-only mode-------ALTER D
This paper illustrates the method of realizing network monitoring by JavaScript. Share to everyone for your reference. The implementation methods are as follows:
The code can monitor whether the network connection and speed of the state.
(function () {var network = function () {var monitor = this;
/** * @param {funcation} speedinterval * * var speedinterval = null;
/** * @param {Function} networkinterval */var networkinterval = null;
/** * @param {Function} renetworkinterval */var renet
in Quickfix.mina.acceptor.AcceptorIoHandler.processMessage, the code is as follows: Java code qfsession.setheartbeatinterval (heartbeatinterval);
Qfsession.setheartbeatinterval (HeartbeatInterval);
So when writing a customized initiator, remember to fix this bug, and after the client receives a response from the server-side logon message, remove the value from the Heartbtint field and set it to the Fixsession heartbeatinterval. Settings can refer to the above code.
6) Check state islogouttimed
install Pymysql1.1.1 How to connect to a database1, you can link a MySQL database by using the Connect to database keyword in the Databaselibrary library, here to link the native MySQL library as an example Database user name: root Database Password: root MySQL Database port: 3306 Database name: World Connect to Database pymysql world root localhost 3306 Execution Result: 2. You can also connect to the MySQL database by using the Connect to database using the Custom params keyword Connect t
() // www.elivn.com
{
Status ("starting ...");
Rdpclient. Connect ();
}
Disconnect a remote connection
Public void disconnect (){Status ("disconnecting ...");Rdpclient. disconnectedtext = "disconnected ";
If (rdpclient. connected! = 0){Rdpclient. Disconnect ();}}
Reconnect to a remote objectDuring the connection, you must specify the server, user name, and passw
calling the Connect function of the Qobject object, so that when the emitter emits the signal, the receiver's slot function is calledIn general, use two types of formats:1, qmetaobject::connection qobject::connect (const QOBJECT * sender, const char * signal, const QOBJECT * Receiver,const CH Ar * method, Qt::connectiontype type = qt::autoconnection) [Static] Qlabel *label = new Qlabel; Qscrollbar *scrollbar = new Qscrollbar; Qobject::connect (ScrollBar, SIGNAL (valuechanged (int)), la
evidence.
(2), immediately restore the modified page through backup.
(3), under the Windows system, through the network monitoring software or "netstat-an" command to view the current network connection situation, if you find an abnormal network connection, you should immediately disconnect from its connection. Then check the log files of system processes, services, and analysis systems and services to see what else the system attacker has done in th
other information.
The following table lists the common opcode and responsecode, please refer to the Irobex 1.2 documentation for more details.
OpCode
Opcode (W/high bit set)
Defined
Significance
0x80 *
Connect
Connection
0X81 *
Disconnect
Disconnect
0x02 (0x82)
Put
Send an Object
0X03 (0x83)
Get
Get an Object
0x04 (0x84)
Reserved
Retained by
0X85 *
SetPath
Set path
0xFF *
Abort
Cancel the
What is the difference between the three commands of connect reset, disconnect current, and quit in DB2? Or which one can really disconnect after connecting to the DB2? Connect reset literally means "connection reset";Disconnect current literally means "disconnecting the connection";All of the above two commands can disconnec
signal is discarded.A. setvalue (80 );After this statement is executed, the valuechanged signal of object A will be sent, and the signal is connected by a slot (setvalue of object B), So B. setvalue (INT) is executed immediately and the parameter is 80, so B. the value () is 80.You can use the disconnect () function to remove signals and slots that have established connections. Bool qobject: disconnect (co
Solving the problem of automatic disconnection of mapped network drives
The mapped network drive is automatically disconnected for a period of time due to the default time-out period for the Server service's automatic disconnect feature, and we can change the disconnect time in the following ways.
First, use Registry Editor to increase the default time-out period.
1. Locate and click the following regist
') let server = require('http').Server(app) let io = require('socket.io')(server)app.listen(3000)
Koa
let app = require('koa')() let server = require('http').Server(app.callback())let io = require('socket.io')(server)app.listen(3000)
Listener connection status
When the connection between the server and the client is successful, the server will listen to the connection and connect events (connection is synonymous with connect), and the client will listen to the connect event, when the connection
Tutorial description:In this experiment, two Cisco 2600 vrouters and one Cisco 3600 vro are used to implement Voip for Division 1 and Division 2 of the blue school. The two Divisions use Cisco's 2620 as the terminal device, and the Headquarters uses Cisco's 3640 router as the center networking device. The specific structure of the connection between the leased lines is as follows:Branch 1)Cisco 2600 Voip configurationCurrent onfiguration!Version 12.0:Service timestamps debug uptimeService timest
the heartbeat mechanism and not receiving the PINGRESP message from the gateway many times in a row. Because the client's connection and heartbeat are not synchronized with other client state properties, this can cause a problem, and if a large number of clients flood and connect to a gateway at the same time, the gateway may be washed out without warning. This requires the gateway to have the bulk of the connection processing power, concurrency feature enhancement.Client disconnection ProcessA
Microsoft. Net Remoting Series II
1. Activation of remote objects
There are three activation methods in Remoting. The general implementation is through the static method of the RemotingServices class. The procedure is to register the remote object to the channel. Since Remoting does not provide the corresponding Unregister method to deregister remote objects, if you need to register/deregister a specified object, Microsoft recommends using Marshal (usually translated as grouping) and
client connection/disconnect), the Socket_select function returns and continues to execute.$write is listening for client write data, incoming NULL is not concerned about whether there is a write change.$except is the element in the $sockets to be excluded, and incoming null is "listening" all.The last parameter is the timeout timeIf 0: End immediatelyIf ngt;1: Then ends after n seconds, and returns in advance if a connection has a new dynamicIf null
In the process of DB2 development, one of the most important tasks throughout the development process is the maintenance of the database, which is necessary to maintain a large information system; Leave a simple maintenance manual for a rainy year; The following parts of the maintenance order are collected to treat our maintenance engineers and project managers.
* update:2006-06-14
* Memo: Please use "DB2" for detailed command
1. Close DB2
Db2stop
Http://hi.baidu.com/wader2006/blog/item/78406b60b51f8b47ebf8f8f0.html
DB2 Common Command Set----DB2 maintenance 2007-09-09 10:10 in the DB2 development process, the whole development process also has a very important part of the work is the maintenance of the database, for the maintenance of a huge information system is very necessary; Leave a simple maintenance manual for a rainy night. Some of the maintenance commands collected below are used to treat our maintenance engineers and project mana
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