This discussion assumes a database Recovery Model of “Full,” which is the normal recommendation for production databases. This setting allows the backup of the transaction log so that you can recover up to the point of failure by restoring log backups in order. This setting is usually reserved for test or read-only databases.
The SQL Server 2014 Resource Governor can limit the physical I/Os issued for user threads in a given resource pool. If your most recent partitions become fragmented due to activity it’s no longer necessary to rebuild indexes on the entire table. Microsoft SQL Server has evolved over the years as a scalable, robust database management system and is now competing in the VLDB (Very Large Database) space with Oracle and IBM. The market share for the product continues to grow, based on total cost of ownership and ease of use. This white paper outlines some of the important fundamentals of Microsoft SQL Server 2008 that every DBA should know.
SQL Server 2014 Cloud Computing Enhancements
The SQL Server 2014 Columnstore Index must use all the columns in the table and can’t be combined with other indexes. In SQL 2012, if your primary drops offline or the cluster loses quorum, the readable replica databases drop offline. (This is hilarious because it’s right when you really want to be able to query the secondaries.) No way to control it – it’s totally automatic. In SQL 14, the secondaries remain online and readable when the primaries aren’t available. However, keep in mind that typical AlwaysOn AG connections go through the AG listener name, and then fetch the list of readable replicas from the primary. This just means that in order to keep your report queries online, you can’t use the AG listener – you have to connect directly to the replica’s server name.
- Isuppose that the first thing that comes to mind when someone talks about blockchainis Bitcoin and cryptocurrencies.
- In this tip I will guide you through the new features that makeSQL Server 2014 so outstanding.
- Thereare 5 edition levels and each of the levels are geared towards different sized companies/applications.
- Encountering issues when trying to shrink the log file in SQL Server can lead to bloated database files, reduced storage efficiency, and potential performance degradation.
- Humor aside, this makes sense for people who host their servers in VM providers with very fast Internet connections that don’t pay for bandwidth – specifically, people hosting SQL Server in Windows Azure VMs.
The setting MAX_OUTSTANDING_IO_PER_VOLUME which is available through ALTER RESOURCE GOVERNOR will set the maximum number of IO operations per disk volume. But just to name a few of the improvements, the new SQL Server 2014 edition brings to the table sql server 2014 new features for dba new encryption mechanisms for your backups, managed backups to Azure, and the ability to backup to URL straight from SSMS. In terms of enhancements brought to these features, we have a detailed article that already covers these areas, here.
SQL Server Managed Backup to Windows Azure
I know you have been waiting for the next release of SQL Server. On June 25th Microsoft released the first community technical preview (CTP1) for the next version of SQL Server. When you first hear about it, SQL Server’s In-Memory OLTP sounds like a new feature that’s hard to implement, requires a lot of schema changes, and takes planning and downtime. Here Brent Ozar tells you how it’s simply not true, and you can do it in just 3 steps.
You can find more detailed information about this feature, here. In-Memory OLTP or online-transaction processing is a database engine that is memory-optimized specifically for OLTP operations and is part of SQL Server’s engine. We publish insightful articles about new products, best practices and trends; readers help each other out on various database questions and problems. Database management systems (DBMS) and database security processes are also key areas of focus at DatabaseJournal.com.
Where to Download CTP1 and Find Additional Resources
There have also been some changes in terms of security permissions for SQL Server 2014. The new estimator has incorporated algorithms and assumptions which work with modern OLTP and data warehouse workloads. Just as the title says, you are able to deploy a SQL Server database to a Virtual Machine that resides in Azure. You can find more information and guidelines about this, here. This engine has been designed to deliver increased concurrency and it has a brand new mechanism to control and eliminate delays due to locking with an optimistic concurrency control mechanism. The most talked about and most awaited feature of SQL Server 2014 is most undoubtedly the new In-Memory OLTP engine, internally called Hekaton.
In previous versions of SQL Server the easy way to fix IO issues was to add memory. This was easy and effective but not always practical and often expensive. The Buffer pool extension allows us to extend the buffer pool to storage (you’ll want this to be ssd since we’re trying to speed things up). Because ssd has much better IO performance than normal disk we get the benefits of a very large buffer pool without adding more memory.
This feature is designed to help offload the small random I/Os that SQL Server has traditionally done to mechanical disks, to Solid State Drives. This feature is currently targeted for only being available to those that purchase Enterprise 64 bit version of SQL Server 2014. With this new release of SQL Server 2014 there are a number of new features that Microsoft has included. Below I have outlined a number of those items I think are noteworthy. By no means is this an exhaustive list of the new features that Microsoft has included in this release. Murilo Miranda continues his series by explaining how such an index is unlike a conventional index.
- If you really need to scale out your reads, SQL 14 gives you up to 8 secondaries (up from 4).
- This type of inline specification of CLUSTERED and NONCLUSTERED indexes is now available for tables that are disk-based.
- However, Windows Server clusters have a type of drive volume called Clustered Shared Volumes with much more flexibility.