How to restore a sql server database backup to an older. Restoring a database backup created on a sql server 2008 r2 to a sql. For instance, if you copy a sql 2000 database to sql server 2008, the new copy is an upgrade to the new internal format but retains a compatibility level of 80 which represents sql 2000 aka sql 8. I am using t sql to backup a 2014 sql database using backup database to disk. Alter database compatibility level transactsql sql. Table 1 shows the major versions of sql server and their default and supported database compatibility levels.
Sql server 2008 and 2005 express database compatibility. Compatibility level vs database version john morehouse. Sql server dba tutorial 36how to change compatibility level of a. You cannot mirror the master, msdb, tempdb, or model databases. Unlike the database file version which get changed when you restore a database backup in a newer version or attach an older database to. Sql server backup time expired microsoft community. Yes, but if he wants to take the 2008 database back to a 2005 database, he cant do it, even if you set the compatibility level to the older version. In this example, the maintenance plan is set up with full backups, differentials, and transaction logs. Upgrade a database from microsoft sql 2008 to microsoft sql 2016. The compatibility level setting is used by sql server to determine how certain new features should be handled. If you previously had an older sql server 2008 database and restored it on this. Default compatibility level 140 for azure sql databases. The reason for this behavior is that by default sql server doesnt allow restoring a database backup to an older version of sql server, regardless of the compatibility level of the database the backup was taken from. For preexisting databases running at lower compatibility levels, the recommended workflow for upgrading the query processor to a higher compatibility level is detailed in the article change the database compatibility mode and use the query store.
In this tip we take a look at one approach to downgrade a sql server database to a lower version of sql server since a simple backup and restore will not work. Restoring a database backup created on a sql server 2008 r2 to a sql server. If you backup a database that has a different compatibility level than the native compatibility level of the sql server instance you are currently using, you will not be able to restore it to an older instance version. Very soon, well be changing the azure sql database default compatibility level for newly created databases to 140. Sql server such as sql server 2008 to sql server 2019 15. A few times in my life, i needed to restore a database on a lower version of sql server than the server where the backup was taken. Manually create a coldspring remote proxy with fw1 transfer files to. What is sql server database compatibility level and how to. How to change the compatibility level of a database sql. We have four different databases on a sql server 2008 not sp2 dont ask me why database server that have an odd problem. Sql server backward compatibility check free service. Im hoping to restore a backup from sql server 2008 into a sql server 2005 instance.
How to migrate a sql server database to a newer version of sql. If i recall correctly, the database in question started off as a sql server 2000 database which is a compatibility of 80 and an internal version of 539. Using transactsql to view the compatibility level of a database. The alignment of sql versions to default compatibility levels are as follows. Take a live 2014 database, and create a backup of that, but in 2012 format. I can install virtual machines but as i was able to install sql server 2012 and sql server 2014 side by side, i just went ahead with that option. In sql server, you can use tsql to check the compatibility level of a database. My database hoster allows to restore sql server databases with a compatibility level of 90 sql server 2005. For example, if we restore a sql server 2005 database backup to sql server 2017, then the compatibility level of the restored database would be set to 100 because that is the minimum sql 2017 level supported.
Understanding sql server compatibility levels this article aims at describing the importance of compatibility levels when it comes to sql server. How to change sql server 2014 database compatibility level in. Even when the compatibility level of the database that needs to be migrated to an older sql server version matches that version, the backup cant be simply restored. The compatibility level can be changed back and forth. Additionally, when restored to the original sql server 2008 db server under a different name, the database still returns sql server 2005 compatibility level 90 for the db version, even though it was backed up on the same server as compatibility level 100. When a database is set to backward compatibility mode, some of the new functionalities may be lost. You must manually correct this data as appropriate. How to check a databases compatibility level in sql. View or change the compatibility level of a database sql.
Microsoft sql server internal database versions and. As mentioned, through the course of the years we have been able to upgrade it to sql server 2008 and currently in the process of getting it moved to sql server. Is there a way to have sql 2008 back up in a format that 2005 will understand. Understanding sql server database compatibility level. Backup database in sql server 2008 compatibility level 90 restore to 2005.
Sql server version database engine version default compatibility level supported compatibility levels. Version version means that any database created on an sql server 2016 is compatible with sql server 2016 through sql server 2008. The following tutorial explains you the backing up and restoration of your ms sql server 2008 database using the microsoft sql server management studio. Create a maintenance backup plan in sql server 2008 r2. On failover cluster instance database mirroring log shipping backup and restore. Compatibility level for sql server database stack overflow. Verify that the sql server agent service is running and set to automatic.
Microsoft sql server database compatibility levels rackspace. Restoring sql database backup to previous data version. Unlike the database file level which gets automatically upgraded when you restore or attach a downlevel database to an instance running a newer version of sql server, and which can never go back to the lower level, the database compatibility level can be changed to any supported level with a simple alter database set compatibility level xxx command. You can however generate scripts from your database for sql server 2005. How to migrate a sql server database to a newer version of. My database is created locally with a compatibility level of 100 sql server 2008. Ideally, there is no way you can restore ms sql server 2012 database to sql server 2008 even if. Sql server azure sql database azure synapse analytics sql dw parallel data warehouse this topic describes how to view or change the compatibility level of a database in sql server 2019 15. View or change the compatibility level of a database sql server. Compatibility level from 2008 to 2019 compatibility level is a database configuration that decides what algorithm sql server will use to execute. There is a limited number of compatibility levels that each version of sql server can support. Instead of impacting the entire server, the feature affects the behavior of selected database that is currently in use. When i restored it on my sql server 2008 r2 i made sure the compatibility level was set to 90.
Microsoft sql server management studio express ssmse which is an free open source graphical management tool which can be used to manage your sql server 2008 express edition. Backing up a sql 2008 db, then restoring, gives a sql 2005. A compatibility level is associated with each database. Troubleshooting sql server backup and restore operations. Every database on a sql server has a compatibility level setting, which will enable some not all of the features of each version. This restriction is there because an older version cannot know about file format changes that were introduced in the newer release. Compatibility level is a database configuration that decides what algorithm sql server will use to execute queries and also support various available features. Alter database compatibility level transactsql sql server. Sql server 2019 supports compatibility level from 2008. Note that this article refers to compatibility level and sql server, but the same methodology applies for moves to 140 for sql server and.
Sql server 2012 backward compatibility for backups with. What features are disabled between compatibility levels in sql server. Note that this article refers to compatibility level and sql server, but the same methodology applies for moves to 150 for sql server and. Msg 30, level 16, state 1, line 1 restore database is terminating abnormally. So, i generated script of my database version 2008 and run in sql server 2005, backup and restore to my database. How to restore sql server 2012 database backup to sql server 2008. Even when the compatibility level of the database that needs to be migrated to. Database mirroring works with any supported database compatibility level. In that case, the database compatibility level changes to the lowest supported version. How do i connect to mssql server 2008 from sql server management studio.
Sql server database compatibility level affects many users think that impact of compatibility feature is on the entire server, but it is not true. Prior to sql server 2014, the database compatibility level of your user databases. Changing the compatibility level of a sql server database. Lets start off with a quick overview of sql server versions and compatibility levels. I would like to merge both of these tasks, into one. The importance of database compatibility level in sql server. View or change the compatibility level of a database. Posted on march 16, 2016 march 16, 2016 by eric cobb have you ever wondered what features may or may not be available when your database is running in a different compatibility level than your sql server version. Either restore the database on a server that supports the backup, or use a backup. In this video you will learn how to change sql server database compatibility using sql server management studio as well as using tsql. Compatibility level 60, 65, and 70 is no longer available in sql server 2008.
For extensive information about backup and restore operations, see the following topics in books online. In sql server, you can use t sql to check the compatibility level of a database. What features are disabled between compatibility levels in. For example, databases that have a compatibility level of 80, can only be installed on sql server 2000 instances up to sql server 2008 instances. A databases physical version is always the same version as the instance version you. Upgrading sql server database compatibility levels. How to change sql server 2014 database compatibility level.
Sql server 2008 100 sql server 2005 90 sql server 2000 80 note. To change the compatibility level, select a different option from the list. Azure sql database compatibility levels all about sql. How to migrate a sql server database to a lower version.
To put it another way, you can have a database running on sql server 2014, but that database still be set to sql server 2008 compatibility and some of the features of 2014 will not be enabled. Microsoft sql server internal database versions and compatibility levels a database created by a more recent version of microsoft sql server cannot be attached or restored to an earlier version. Sql server azure sql database azure synapse analytics sql dw parallel data warehouse sets transact sql and query processing behaviors to be compatible with the specified version of the sql engine. Hopefully, by the time you finish reading, youll understand why you get errors in your applications when you upgrade your database from one version of sql server to another. When upgrading databases from an older version of sql server using either the backup and restore method or detach and attach method the compatibility level does not automatically change and therefore your databases still act as though they are running using an earlier version of sql server. The available options for different database engine versions are listed in the alter database compatibility level transactsql page. One thing impressed me about the latest version of sql server 2019 support to compatibility level from 2008 to 2019. If you restore a full database backup that was taken on an older version of sql server to an. In earlier sql server versions, the level acts as a part in backward end.
Sql server backup compatibility 2008 with 2005 server. Now one day when i opened up my sql server 2014 and went to the properties of the my database, i realized that the dropdown box for compatibility level. This is a list of all sql server compatibility levels. Im with a problem with an database in sql server 2008 with compatibility level 80 scary the compatibility level but my developer erp requires it.
The compatibility level sets some database behaviors to work in accordance with the specified version of sql server. When you restore a database backup taken on an older version of sql, the database compatibility level remains the same as it was on the. Sql server compatibility levels scott matties blog. Upgrading sql server databases and changing compatibility.
I have a database i was given by a client from a sql server 2005. Understanding sql server compatibility levels blog spiria. Unfortunately, the backup files are not backwards compatible. For example, for compatibility levels in sql server 2008 and earlier, the pivot command was supported in the recursive cte.
Upgrade your database compatibility level network world. This way a db could be migrated to a newer version of sql without having issues with the application. Database containing an indexed view cannot be changed to a compatibility level lower than 80. But in sql server 2008 and higher compatibility levels, the pivot command is not supported in the recursive cte. Backup database compatibility level 100, on sql server 2008 server. For example, sql server 2008 can attach a database that was detached from the 2005 version, but not one detached from the 2012 version. One important factor to contemplate during an upgrade and migration effort are your database compatibility levels, which control certain database behaviors to be compatible with a particular version of sql server. Backup database in sql server 2008 compatibility level 90. Therefore, all bulk operations are always fully logged.
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