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  • Implementing Cluster Continuous Replication, Part 3

    Cluster continuous replication (CCR) uses log shipping and failover to provide a more resilient email system with faster recovery. Once it is installed, a clustered server requires different management routines. These are done either with a GUI tool, The Failover Cluster Management Console, or the Exchange Management Shell. You can use Powershell as well for some tasks. Confused? Not for long, since Brien Posey is once more here to help.

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  • A simple Volume Replication Tool for large data set?

    - by Jin
    I'm looking for a solution to the following: Server A (Site A) - Win 2008 R2 - approx 10TB (15TB max) of data - well over 8 million files Server B (Site B) - Win 2008 R2 I want to assynchronously replicate Server A's volume to a volume on Server B for data redundancy. Something that I can say to my users, "go here for data" when/if Server A goes belly up due to machine problems, disaster, etc. Windows 2008 R2 does have DFS, but microsoft does not apparently support this large of a dataset (or more accurately, more than 8 million files - according to the docs I could find). I also looked at Veritas Volume Replication, but this seems almost too much as I would also require Veritas Volume Manager. There are numerous "back-up" software which makes a 1-1 backup, which would be ok, but since it will be transfering over internet, I'd like something that has compression during transfer like DFS has. Does anyone have any suggestions regarding this?

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  • SQL 2008 publisher -> SQL 2000 subscriber: Is a pull subscription possible for merge replication?

    - by Brian Dunzweiler
    I am trying to synchronize a SQL 2000 SP4 subscriber to a SQL 2008 publisher via a merge pull subscription. When the subscriber tries to run the merge agent, it fails the following error: The process could not connect to Distributor 'OH05DBS002\SAM_SSG_2008'. SQL Server does not exist or access denied. Has anyone had success with this setup? I was able to create and synchronize a push subscription so I know that communication works between the two, at least from 2008-2000. The lack of communication from 2000-2008 also affects the ability to create a linked server on the SQL 2000 subscriber. One other tidbit - I did install the SQL 2008 native client on the the 2000 box but it didn't help either. Before anyone asks, I can't upgrade the subscriber as it still needs to support replication between MS Access 2003. Yeah, I know. :) TIA, Brian

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  • How to recover from failed Mysql schema update, with replication?

    - by OmerGertel
    I have two MySQL servers configured with master-slave replication. Before we deploy a new application version we: 1) STOP SLAVE 2) Take a MySQL dump of the slave. However, if a mistake is done during the deployment of the new schema version (a table is dropped by mistake, for example), having the slave intact doesn't help. Our service is write-intensive, so we can't turn it back up until we have a master working. If we now load the mysql dump back into the master, it will take a long time during which our service remains down. What is the best-practice to recover from such a mistake? How can I setup the system so I can easily promote the slave, turn on our service and only then tend to the broken database? Mainly, I'm worried with re-syncing the slave and the master after changes are done on the slave.

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  • What is causing Error 15165 in my MSSQL Transactional Replication subscription agent?

    - by Ryan
    Microsoft SQL Server 2008 (SP1) Standard running on Windows 2008. Bidirectional transactional replication is set up between two servers. One of the subscription agents just started getting error 15164. The results of sp_helpsubscriptionerrors is: Source: MSSQL_ENG Error: 15165 Text: Could not find object '(null)' or you do not have permission. Command Id: 320 I have made sure that the SQL Server agent login has both Windows and SQL security access. Full access to the directory structure and sysadmin access to the SQL Server. What else can I do to try to troubleshoot/fix this? Thanks!

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  • Is the "One Description Table to rule them all" approch good?

    - by DavRob60
    Long ago, I worked (as a client) with a software which use a centralized table for it's codified element. Here, as far as I remember, how the table look like : Table_Name (PK) Field_Name (PK) Code (PK) Sort_Order Description So, instead of creating a table every time they need a codified field, they where just adding row in this table with the new Table_Name and Field_Name. I'm sometime tempted to use this pattern in some database I design, but I have resisted to this as from now, I think there's something wrong with this, but I cannot put the finger on it. It is just because you land with some of the structure logic within the Data or something else?

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  • 24 Hours of PASS

    - by andyleonard
    I am honored to participate in 24 Hours of PASS starting at 8:00 AM 19 May 2010! My presentation is titled Database Development Patterns and is the second session - starting at 9:00 AM EDT 19 May 2010. It's free, but you have to register to attend - register today! :{> Andy Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!...(read more)

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  • Which method of SQL Server 2005 or 2008 Replication is best for ease of field changes?

    - by Rick
    We need 15 minute warm updates from one SQL Server to another. Log Shipping looks good and appears easy to setup. We are also looking into Transactional Replication. The data only needs to copy one way. We have two main requirements: 1) The destination database needs to be a max 15 minute old copy of the source. It needs to re-try and get up-to-date if a network cable is unplugged for a while. 2) We would really like table (fields added or modified) changes in the source as easy as possible. Thanks in advance for all suggestions.

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  • Where is a postgresql 9.1 database stored in ubuntu 12.04?

    - by celenius
    I installed and created a Postgresql database on ubuntu. I then created the database using the following command: sudo su postgres createdb mydatabase However, I can't figure out where the database was initialized. I would like to be able to edit the hba.conf file and postgresl.conf files. When I view the database using pgadmin I see the following information: CREATE DATABASE mydatabase WITH OWNER = postgres ENCODING = 'UTF8' TABLESPACE = pg_default LC_COLLATE = 'en_US.UTF-8' LC_CTYPE = 'en_US.UTF-8' CONNECTION LIMIT = -1; Any thoughts on how I can find the database cluster location?

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  • Replication Presentation at the Southampton User Group

    - by GavinPayneUK
    Last night I delivered a presentation about SQL Server’s replication services to Mark Pryce-Maher’s user group in Southampton. As those who were there saw this is a massive topic and to deliver anything but a high level overview in 45 minutes does an injustice to the subject.  Therefore, what I gave the Wednesday night audience was a deliberately high level introduction through my slides with an accompanying detailed commentary as well as answering questions as we went along. The great thing...(read more)

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  • Could SQL Server 2008 replication be used with NLB to allow unlimited scaling of reporting servers?

    - by John Keranos
    We are currently using transactional replication in SQL Server 2008 to keep a secondary reporting server synchronized with a primary database server. This has been working weel and keeps some of the load off the primary server. Would it be possible to scale this solution to multiple reporting servers? We're expecting an increased load of read-only queries and it would be nice to be able to add reporting servers as needed. The general idea was the following: Each reporting server would use a "pull" subscription to get the data from the primary database publication. These reporting databases could be a couple of minutes behind the primary server without it being an issue. The reporting servers would be NLB'd together. All read-only queries would be directed to the NLB which should spread the load across the servers.

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  • How to determine if someone is accessing our database remotely?

    - by Vednor
    I own a content publishing website developed using CakePHP(tm) v 2.1.2 and 5.1.63 MySQL. It was developed by a freelance developer who kept remote access to the database which I wasn’t aware of. One day he accessed to the site and overwrote all the data. After the attack, my hosting provider disabled the remote access to our database and changed the password. But somehow he accessed the site database again and overwrote some information. We’ve managed to stop the attack second time by taking the site down immediately. But now we’re suspecting that he’ll attack again. What we could identified that he’s running a query and changing every information from the database in matter of a sec. Is there any possible way to detect the way he’s accessing our database without remote access or knowing our Cpanel password? Or to identify whether he has left something inside the site that granting him access to our database?

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  • Transaction Replication Publisher failover to Mirror

    Transaction Replication Publisher failover/failback to mirror standby with automatic redirection of the subscriber and client application. Does your database ever get out of sync?SQL Connect is a Visual Studio add-in that brings your databases into your solution. It then makes it easy to keep your database in sync, and commit to your existing source control system. Find out more.

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  • Setting up MySQL Replication for High Availability

    <b>PACKT Publishing: </b>"MySQL Replication has been supported in MySQL for a very long time and is an extremely flexible and powerful technology. Depending on the configuration, you can replicate all databases, selected databases, or even selected tables within a database."

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  • Init Replication From Backup

    One of the great features with SQL Replication is the ability to initialize a subscription from backup instead of from a snapshot. The official use for this is to take a database backup and restore it to a subscriber then replicate any additional changes to the backup. New! SQL Monitor 3.0 Red Gate's multi-server performance monitoring and alerting tool gets results from Day One.Simple to install and easy to use – download a free trial today.

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  • Should I never put a transactional replication distributor on a subscriber server?

    - by Stuart Branham
    What factors into choosing a distribution server for transactional replication? In our topology, we've always had the distributor reside on the publishing server. We rarely generate snapshots and performance is good enough, so this is okay for us today. One of our instances is moving to a cluster, so we need to move the distributor off for resilience/symmetry. Right now our two choices are to use a server physically close to the publishers, or our single subscription server. Our publisher is in our main office, and our subscriber is in a colocation facility off-site which our ISP runs. We have a pretty good line to it. The reason we're even considering the latter is to save work and licensing costs.

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  • Oracle Database 12c ?????????????????? (8/1 ????)

    - by OTN-J Master
    Oracle Database 12c???????????????????????????????7?17????????????????????????????????????????????????????????????: ”????”????????????????Oracle Database 12c? ??: ·?????????????? Oracle Database 12c ·???????????????? ·??????????????? ·?????????????????? ·?????????·????????????? ·Oracle Database 12c ??????? ??????????????????????????????????????(??????????????????)?Oracle Database 12c???????????????????????????¦ @IT (ITmedia) ????????????????????5????????!Oracle Database 12c????? ¦ ZDNet Japan ?????????????? ¦?????? ????+IT??????????????????????????????????????????????????????????????????“???????”??????

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  • Database OR Array

    - by rezoner
    What is the exact point of using external database system if I have simple relations (95% querries are dependant on ID). I am storing users and their stats. Why would I use external database if I can have neat constructions like: db.users[32] = something Array of 500K users is not that big effort for RAM Pros are: no problematic asynchronity (instant results) easy export/import dealing with database like with a native object LITERALLY ps. and considerations: Would it be faster or slower to do collection[3] than db.query("select ... I am going to store it as a file/s There is only ONE application/process accessing this data, and the code is executed line by line - please don't elaborate about locking. Please don't answer with database propositions but why to use external DB over native array/object - I have experience in a few databases - that's not the case. What I am building is a client/gateway/server(s) game. Gateway deals with all users data, processing, authenticating, writing statistics e.t.c No other part of software needs to access directly to this data/database.

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  • Publish database between two open database connections (Visual Studio 2005)

    - by danielswe
    I have two data locations, one to a local and one to a remote database. How do I copy the local database schema to the remote? The reason I don't use "Publish to provider" is that I'm not sure that I have all the information necessary to do so. I have the database name, server, username and pass but not "web service address" nor "web service password". I work in Visual Studio 2005. The server is a MSSQL 2005 server. I have tried using the queries but I only get errors doing so.

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  • Is it possible to detect that a database connection is to a copy rather than to the original database?

    - by user149238
    I have an application that needs to know if it is connected to the original database that it was installed with or if the connection is to a copy of that database. Is there any known method to know if the database has been cloned and the application is no longer connected to the original? I am specifically interested in MS SQL Server and Oracle. I was kicking ideas around for a stored procedure but that most likely doesn't have access to the hardware to confirm unique hardware information that would somewhat guarantee that the database is the one that it was originally connected to during installation. I'm trying to prevent/detect cloning of a database so that there is only 1 "true location of truth". Thanks!

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  • Monitoring Active Directory (AD) Replication in Windows Server 2008 R2

    - by Kyle Brandt
    With Active Directory, what is a good way to monitor replication? I have multiple sites and multiple locations, so ideally both replication between sites and within sites would be monitored. I'm not really sure if each DC needs to be monitored, each NTDS connection, or each DC * Each NTDS connection. For the purposes of fitting into a standard alerting methodology, perfmon counters that would allow me to alert if replication was behind X minutes seems like it might be ideal.

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  • Discount Codes Galore

    - by Cassandra Clark
    Saving money is at the top of everyones list right now. With this in mind the Oracle Technology Network team has compiled a list of discounts available at the Oracle Store. We are also introducing an Oracle Technology Network member discount from O'Reilly Media. If you subscribe to any of the Oracle Technology newsletters you also saw special discounts from CRC Press, Packt Publishing and Apress. We are going to do our best to bring you more offers like this every month. Now on to the discounts... Oracle Store offers - all below expiring May 31st 2010. Don't miss out! Expand Your Productivity with Oracle Open Office and Save 15%? Enter OTNOffice at checkout. Buy Now! Drive Business Agility and Performance with Industry-leading Oracle Database Management Packs.  Save 10% when you purchase them at the Oracle Store. Enter OTNDBMP at checkout. Buy Now! 15% Savings on Oracle Virtualization and Unbreakable Linux Support at the Oracle Store Enter code OTNLinuxVM at checkout. Buy Now! 20% Savings on Oracle SQL Developer Data Modeler Use OTNSQL at checkout. Buy Now! O'Reilly Oracle Technology Network Member Offer O'Reilly is generously offering Oracle Technology Network Members 35% off for print books and 40% off of eBooks. Browse Oracle titles at- http://oreilly.com/pub/topic/oracle. Use discount code TECNT at checkout.

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  • DB Schema for ACL involving 3 subdomains

    - by blacktie24
    Hi, I am trying to design a database schema for a web app which has 3 subdomains: a) internal employees b) clients c) contractors. The users will be able to communicate with each other to some degree, and there may be some resources that overlap between them. Any thoughts about this schema? Really appreciate your time and thoughts on this. Cheers! -- -- Table structure for table locations CREATE TABLE IF NOT EXISTS locations ( id bigint(20) NOT NULL, name varchar(250) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1; -- -- Table structure for table privileges CREATE TABLE IF NOT EXISTS privileges ( id int(11) NOT NULL AUTO_INCREMENT, name varchar(255) NOT NULL, resource_id int(11) NOT NULL, PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=10 ; -- -- Table structure for table resources CREATE TABLE IF NOT EXISTS resources ( id int(11) NOT NULL AUTO_INCREMENT, name varchar(255) NOT NULL, user_type enum('internal','client','expert') NOT NULL, PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ; -- -- Table structure for table roles CREATE TABLE IF NOT EXISTS roles ( id int(11) NOT NULL AUTO_INCREMENT, name varchar(255) NOT NULL, type enum('position','department') NOT NULL, parent_id int(11) DEFAULT NULL, user_type enum('internal','client','expert') NOT NULL, PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ; -- -- Table structure for table role_perms CREATE TABLE IF NOT EXISTS role_perms ( id int(11) NOT NULL AUTO_INCREMENT, role_id int(11) NOT NULL, privilege_id int(11) NOT NULL, mode varchar(250) NOT NULL, PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=2 ; -- -- Table structure for table users CREATE TABLE IF NOT EXISTS users ( id int(10) unsigned NOT NULL AUTO_INCREMENT, email varchar(255) NOT NULL, password varchar(255) NOT NULL, salt varchar(255) NOT NULL, type enum('internal','client','expert') NOT NULL, first_name varchar(255) NOT NULL, last_name varchar(255) NOT NULL, location_id int(11) NOT NULL, phone varchar(255) NOT NULL, status enum('active','inactive') NOT NULL DEFAULT 'active', PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ; -- -- Table structure for table user_perms CREATE TABLE IF NOT EXISTS user_perms ( id int(11) NOT NULL AUTO_INCREMENT, user_id int(11) NOT NULL, privilege_id int(11) NOT NULL, mode varchar(250) NOT NULL, PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=2 ; -- -- Table structure for table user_roles CREATE TABLE IF NOT EXISTS user_roles ( id int(11) NOT NULL, user_id int(11) NOT NULL, role_id int(11) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1;

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  • Oracle Database 12 c Training and Certification: What’s in it for Me?

    - by KJones
    Oracle Database 12c has officially launched! Through Oracle University, our expert instructors can introduce you to the features and functions of this new Oracle Database 12c product. Through training courses and certification exam prep seminars, you can build up your database knowledge and apply this knowledge to advance your career. Already an Oracle Database Expert? Why Oracle Database 12c Training is still a Good Idea Oracle is the industry leader for database technology and takes the release of new products very seriously. We continue to listen to customer needs and add features and functionality to address those needs. Oracle Database 12c is no exception. The following areas have been greatly enhanced and should be considered for your additional training or certification: • Database for Cloud Computing • Compression and Information Lifecycle Management (ILM) • Improved Performance & Scalability • Extreme Availability • Security Defense in Depth • Manageability Oracle Certified Database Administrators Reap Career Rewards Becoming an expert user of database technology through Oracle University's certification program widens your skill set to demonstrate your expertise implementing the most advanced database technology available. By doing so, you'll make yourself a more marketable employee and candidate in the job market.  Reasons to Become an Oracle Certified Database Administrator of Oracle Database 12c: • The new Oracle Database 12c certifications emphasize more advanced skills that align with industry standards, resulting in an even more valuable credential for customers and partners. • The Oracle Certified Associate (OCA) for Oracle Database 12c centers upon certification objectives that measure IT professionals' day-to-day skills, along with your ability to manage challenges. • Building upon all of the competencies incorporated into Oracle's Database 12c OCA certification, the Oracle Certified Professional (OCP) for Oracle Database 12c certification includes advanced knowledge and skills required of top-performing database administrators. • The Oracle Certified Master (OCM) for Oracle Database 12c - a very challenging and elite top-level certification - certifies the most highly skilled and experienced database experts. • Oracle offers 12c upgrade paths for existing Oracle Certified Professionals (OCP) and Oracle Certified Masters (OCM). Database 12c Training and Certification: Built with Your Input When creating Oracle Database 12c training courses and certifications, we wanted to know which tasks are most important in a DBA's day-to-day work. Instead of assuming what those tasks might be, we decided to develop a job task analysis survey for DBAs. The response rate from DBAs from around the world was overwhelming! The survey focused on the following key database areas: • DBA Core Essentials • Database Storage • High Availability • Scalability • Networking • Security • Very Large Database Administration • Distributed Databases After conducting this survey, we took this specific feedback and used it to help mold the new Oracle Database 12c training and certification curriculum. The benefit to you? You now have access to Oracle Database 12c courses and certification exams that were created with your specific on-the-job tasks in mind. Explore Oracle Database 12c Training & Certification Today Investing in Oracle Database 12c training courses and certifications will help you develop a great deal of knowledge, experience and expertise. Explore our portfolio of offerings to determine which skills you need as a DBA to get up-to-speed on Oracle Database 12c technology. Questions or comments about the new Oracle Database 12c offerings? Let us know in the comments below. - Diana Gray, Principle Curriculum Product Manager and Raza Siddiqui, Senior Principle Curriculum Product Manager

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  • updating changes from one database to another database in the same server

    - by Pavan Kumar
    I have a copy of client database say 'DBCopy' which already contains modified data. The copy of the client database (DBCopy) is attached to the SQL Server where the Central Database (DBCentral) exists. Then I want to update whatever changes already present in DBCopy to DBCentral. Both DBCopy and DBCentral have same schema. How can i do it programatically using C#.NET maybe with a button click. Can you give me an example code as how to do it?. I am using SQL Server 2005 Standard Edition and VS 2008 SP1. In the actual scenario there are about 7 client database all with same schema as the central database. I am bringing copy of each client database and attach it to Central Server where the central database resides and try to update changes present in each copy of the client database to central database one by one programatically using C# .NET . The clients and the central server are physically seperate machines present in different places. They are not interconnected. I need to only update and insert new data. I am not bothered about deletion of data. Thanks and regards Pavan

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