• DR/HA,  SQL party

    SQL server Disaster Recovery and High availability HADR basic

    June 14, 2011

    SQL server Disaster Recovery Options This month’s TSQL Tuesday party is being hosted by Allen Kinsel (Blog | Twitter) and the topic this month is disaster recovery. It’s a DBA Topic/Job. What is disaster recovery DR and HA high availability HA? Both are best option for the business to minimize their data loss and downtime. The SQL server has a number of native options. It is depends upon your recovery time objective RTO and recovery point objective RPO. That is how much data can you afford to lose? How long can you wait? How much money do you ready to spend? If you have answers for these questions then, you can…

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  • Backup/Restore,  Basics for freshers,  Internals

    SQL server Recovery Models and Backup types

    June 7, 2011

    In this post I am going to explain the importance of recovery models and backup types. Why I am writing this post ? Because, when I was teaching about the topic to my PHP friend .He got doubts on bulk logged recovery model and differential backups. I have given some examples and cleared his doubts. I am going to share this with you guys too. I hope this will help for Freshers and DBA managers. Recovery models and backup types are important to plan the recovery point objective (RPO) and recovery time objective (RTO). We can’t differentiate the recovery models and backup types. Simply, it’s a mixture. Let’s see the discussion. Manager: We need minimum data…

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  • DBA

    Restoring a database from higher version to lower version SQL server

    May 28, 2011

    Restoring a database from higher version to lower version SQL server How to downgrade a database from higher version to lower version? There is no direct way to do this like Backup/Restore. You can use an alternative ways. The alternative ways are,   1. Generate Script 2. Import/Export 3. Transaction replication You may use the alternative ways. It depends upon your environment. Restore errors A backup has taken from higher version (SQL 2008/2005) BACKUP DATABASE dba_test TO DISK='E:\mu\dba_2008.bak' Restore the backup to lower version (SQL 2005/2000)   RESTORE FILELISTONLY FROM DISK ='E:\mu\dba_2008.bak'   Restore error from SQL server 2005 to SQL server 2000 Server: Msg 3205, Level 16, State 2, Line 1 Too many backup…

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  • SQL party

    Meme Monday: I Got 99 SQL Problems And the Disk Ain’t One

    May 4, 2011

      Meme Monday: I Got 99 SQL Problems and the Disk Ain’t One I am a bit late to this party. I have seen this post from Grant’s blog now only. Thanks to Thomas LaRock such a great topic. Here is mine:   1. Too many indexes on a table Developers didn’t check their codes and an execution plan too. They just go and create the indexes (Duplicate indexes too).   2. Improper memory setting Improper min, max memory setting especially for 64-bit servers.   3. Improperly configured transaction log Whenever I got a new server, I have seen log backups are failing because, there is no current database backup. BACKUP LOG cannot be…

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