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is the same, whether retrieving data from the current local database storage engine or retrieving data from the storage engine of a remote database. If you know a little bit about the internal structure of the database, it's very easy to understand the problem:Friends see the graph above, the query engine (also known as the "relational Engine") accesses the access method through the OLE DB interface provided by the storage engine. Here, the OLE DB provider can access the Remote Storage engine's
history of events that you need to restore a database earlier than the last backup. Log transfers allow things to be fed back to another database (the destination) from one database (source). Keeping the destination database synchronized with the original database allows you to have a standby database and also provides a way to remove query processing from the primary database to the read-only destination server 1, Sp_add_maintenance_plan Add a
=] ' database_name ' Return Value: 0 Success 1 failure Note: sp_add_maintenance_plan_db must be performed on msdb, only members of the sysadmin fixed server role can perform sp_add_maintenance_plan_db 2, Sp_add_maintenance_plan_job Add a maintenance plan to an existing job Syntax: sp_add_maintenance_plan_job [@plan_id =] ' plan_id ', [@job_id =] ' job_id
1.SESSION generally not what you say this way of working, you open a browser, then open a, request the same URL, then one of the landing, the other one will never also login. Session and browser itself this program is linked, generally not through the IP and port to bind (if it is port and IP, browser closed session is not necessarily invalid, there is obviously a security problem, this is because of some problems of TCP protocol, it is easy to be exploited).When the browser and the
script and creates the copied file. The following example runs the script at 5 o'clock in the morning and then turns off Lynx: 0 5 * * * [username] lynx-dump http://localhost/copyfile.php 1>/dev/null 2>1 If you are running a CGI version of PHP, you can skip the Lynx section and refer to the binary file: 0 5 * * * [username] php/path/to/copyfile.php 1>/dev/null 2>1 The above describes the Linux
, the need to pay attention to prevent the purchase of equipment but can not be used. Server maintenance Common sense hardware maintenance 2, equipment uninstall and replacement Uninstall and replace the equipment when the problem is not, it is necessary to note that there are many brands of
use is likely to cause a serious error. Before adding a hard drive, it is necessary to determine whether the server has a spare hard drive bracket, hard drive interface and power connector, and whether the motherboard supports this capacity hard drive. In particular, the need to pay attention to prevent the purchase of equipment but can not be used. Server maintenan
, the need to pay attention to prevent the purchase of equipment but can not be used. server maintenance Common sense hardware maintenance 2, equipment uninstall and replacementUninstall and replace the equipment when the problem is not, it is necessary to note that there are many brands of
Summary of index, foreign key, and field syntax maintenance for mysql, SQL Server, and oracle databases, and SQL Server oracle Summary of index, foreign key, and field syntax maintenance for mysql, SQL Server, and oracle databases 1. MYSQL database 1) Create an index Create
notice that the maintenance plan is not under SQL Server Agent. Navigate to the maintenance plan, managed by. The maintenance plan is not created by default on the database. Right-click the maintenance plan and you see the new Maintenan
adding a hard disk, You need to determine whether the server has sufficient hard disk support, hard disk interface and Power interface, and whether the motherboard supports such a capacity hard disk. Pay special attention to prevent devices from being used. Server routine maintenance knowledge hardware maintenance
next step is to create the plan, the operation of creating the plan is very simple, the interface is very detailed, I will not say much. You can also configure alerts and notifications, but this is rarely used. While it's easy to use the SQL job to perform a backup of SQL scripts, but at least it's time to write the backup script, some people feel uncomfortable, is there a simpler, more lazy way to implement automatic scheduled backup of the database? Yes, that's the "
to recover the database. Log transmission allows transaction logs to be repeatedly fed back to another database from one database (source ). Keep the synchronization between the target database and the original database so that you have a backup database and provide a way to unload the query from the master database to the read-only target server. 1. sp_add_maintenance_plan Add a maintenance plan and retur
been specially designed. Do not forcibly disassemble the chassis. In addition, it must be performed when the power is completely down and the server is well grounded, even for devices that support hot swapping, to prevent damage to the equipment due to static electricity. In addition, dust is also the biggest killer of servers, so it is necessary to regularly remove dust from servers. The dust removal method is the same as that of ordinary PC, especi
A maintenance plan can be used in SQL Server 2005 to automatically back up the database, reducing the workload of the database administrator. Here's how to use it:(1) Start SQL Server Management Studio and select Manage-maintenance plan option in the Object Explorer window.2
the creation steps are completed, the next step is to create a plan. The operation for creating a plan is very simple, and the interface is described in detail. I will not talk about it much. You can also configure alarms and notifications, but this is rarely used. The method of executing SQL scripts in SQL jobs to back up data is simple, but at least the BACKUP script should be written. Some people may feel uncomfortable, but is it easier, what about the lazy method to achieve automatic and ti
being used. Server routine maintenance knowledge hardware maintenance 2. device uninstallation and replacement It is not a problem to uninstall or replace the device. It is important to note that there are many brand server chassis that are specially designed and can be ope
and locate run files for deletion 1.8: Check CPU usage and memory footprint : Multiple inspections per day : Found the CPU for a long time to occupy too high (90%) Check the main reason, see the situation restart the server 2: Database state Check Maintenance 2.1: Check the running results of the daily maintenance
Thousands of web site trap Server to maintain the dilemma A server-hosting company suddenly evaporated in April this year, leaving thousands of of its sites in the company without a "landlord" overnight. The company rented the computer room of Netcom, due to more than 2 million yuan in arrears to the Netcom company costs, after the incident, the company's hosti
process: first, when adding memory, you should select the same manufacturer and model as the original memory! The author has encountered that a root DDR is added because there is no dedicated ECC memory at hand. As a result, the system cannot be restarted due to an error! 2. it is not a big problem to remove servers. The key is to pay attention to the fact that many server chassis are hidden in xuanjicang,
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