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Use Yum to install the software with the following error:[Email protected] ~]# yum-y install mariadbLoaded plugins:langpacks, Product-id, Subscription-managerThis system isn't registered to Red Hat Subscription Management. You can use the Subscription-manager to register.No Package mariadb available.Error:nothing to do[Email protected] ~]#Workaround:Use the rpm c
This figure is displayed when you create a release:
The warning content is as follows:
The publisher login name cannot be set for an updatable subscription. You may need to use sp_link_publication. Set it directly on the subscriber computer.
Other information:
An exception occurred when executing a Transact-SQL statement or batch processing. (Microsoft. sqlserver. connectioninfo)
MSDTC on the server 'houyajun' is unavailable.
The databa
Apply for Red Hat Enterprise Linux developer subscriptionGuideRegistered members of the developer program can now get a free set of Red Hat Enterprise Linux licenses. The RHEL Development Kit will provide programmers with a stable development platform for building Enterprise applications. Red Hat developers and subscription members can also get a set of Red Hat JBoss middleware copies for free. Of course, this is only (limited) for development and
Initialize subscription:
1. Use the page to create a release item on the Publishing Server. Check "create snapshot now and make the snapshot available to initialize the subscription ". That is, @ immediate_sync = n'true'2. Use the interface to modify the "allow initialization from backup file" of the release item to true. That is, @ allow_initialize_from_backup = n'true'
3. All the databases in the previo
'] [spid= ' + convert ( varchar 10 @ @SPID ) + n " ] ' RAISERROR(@RE,1,@billNumber) -- thrownOpen 2 Sqlquerysrees windows and set the connection parameters:First window: Open 1 connections, execute 500 times per connection;Second window: Open 1 connections, execute 500 times per connection;The deadlock trace is turned on in the database:-- turn on deadlock trackingDBCC Traceon (1222,-1)DBCC Tracestatus"Execute Test"Fast execution of the first, Second Sqlquerysrees window (click "GO")W
Label:1. The 2 SQL Servers that subscribe to the publication are best to be version consistent and cannot appear similar to the following:Sql2008 r2[Release]-sql2008[subscription];Sql2008 r2[Release]-sql2012[subscription]2. Subscription release theoretically must subscribe to the publication database in the same LAN, but also can penetrate the LAN to try to achie
distribute data to different locations and distributed to remote or mobile users. Replication consists of publishers, distributors, and subscription servers:
Publisher: The source server for the data, maintains the source data, determines what data will be distributed, detects which data has been modified, and submits that information to the Distributor.
Distributor: The Distributor is responsible for transferring data from the Publis
The first part is quoted in: Click to open1: Brief IntroductionPub-sub mode is not generally processed by the system's key data. The Publisher does not care if the Subscriber receives the published message, nor does the subscriber know if he or she has received all the messages from the publisher. You also don't know when subscribers start receiving messages. Similar to broadcasting, radio. So logically, it's not reliable. This can be solved by combining with the request response model.Figure 1:
This blog post mainly introduces the implementation of the simple chat room from the following two parts:1. Introduction to Redis Publish subscription mode2.java Code Implementation Subscription Publishing mode
One, Redis Publish subscription modeRedis subscriptions are divided into subscription channels and
How to calculate the period-over-period ratio of an SQL statement! The number of resumes in this month minus the number of resumes in the previous month () [number of resumes in this month]-[number of resumes in the previous month] = [number of resumes in the previous month
MySQL statistics for the past 12 months (including this month), mysql this month1. Problems
We need to collect statistics for the past 12 months. For example, we need to collect statistics from. In the past 12 months, if there is no data for this month, the statistical value is 0.
Raw data tables, for example, are stored in minutes. That is to say, we need to count the total number of body_infared records g
"Number of resumes in the month"-"resumes last month" = "Number of years" ()
How is the SQL statement written?
SELECT date_format (m_adddate, '%m ') as Month,count (m_id) as Zong,date_format (m_adddate, '%Y ') as year from Job_myreceive where Date_format (m_adddate, '%Y ') =2011 GROUP by Date_format (m_adddate, '%m ');
Reply to discussion (solution)
There
Label:I. Configuring distribution 1. Configure the Distributor, note: To configure the publication and subscription, connect to SQL Server must be logged in with the name 2. Configure distribution 3. Select the distribution server 4. Select the snapshot folder 5. Set the Read and write permissions for this folder to everyone 6. Select the distribution database path 7. Configure distribution 8. Configure distribution 9. Configure Distribution C
A few days ago, I participated in a learning and exchange group of agile individuals organized by Zhou jingen. Some people in the group discussed Google Reader's usage skills. More people do not know what Google Reader is. I wrote a blog here to share my skills in using Google Reader and the technology subscription source provided by instructor Zhou jingen. Some of the resources in this article come from the Internet.
1. Google Reader
Google Re
introduction of messenger
The concept of messenger comes from the mvvm foundation project.Source codeLater, we found that the Messenger is a good mechanism, and we designed our own messenger based on the actual situation.
As the name suggests, as a behavior transmitter here, messenger is responsible for receiving behavior subscriptions in advance and executing these behaviors as needed, that is, publishing.
Figure 4. Messenger class diagram
From the class diagram, we can see that mess
Message subscription and delivery are designed on the "platform-Application of plug-ins in Software Architecture Design
1.First, describe what is "Platform-Plug-in software design.
As the name implies, "platform-plug-in" is to first establish a platform to provide underlying basic services. Based on this platform, in subsequent development, the platform is directly inserted as a plug-in, this design is flexible and scalable.
For example, our comp
Python implements the redis subscription and publishing function, pythonredis
Redis is a key-value storage system. Similar to Memcached, Memcached supports more storage value types, including string, list, set, and zset) and hash (hash type ). The subscription and publishing system can also be implemented. Let's take a look at how to use redis and python to subscribe and publish,
Import redisclass RedisSubs
Original: SQL Server initializes the subscription with a backupWhen you create a transactional replication, if the publication database is large, the snapshot initialization is used for a long time, and if a problem occurs, it may be reinitialized. Using Backup initialization can save a lot of time, but the database cannot be accessed during the creation of a publication subscription. Use Backup instead of
object is as follows:Emitter.on (name, f)// Specify listener function F for event nameEmitter.once (name, f)// is similar to the on method, but the listener function F is a one-time, automatic removal after useEmitter.listeners (name)// returns an array whose members are event name all listener functionsEmitter.removelistener (name, f)// Remove event name 's listener function fEmitter.removealllisteners (name)// remove all listener functions for event nameAlso, the release emit method of an
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