Modifies the files and filegroups associated with the database. Adds or removes files and filegroups from a database, and changes the attributes of a database or its files and filegroups. SQL Managed Instance. To display the current filegroups and which filegroup is the current default, use the sys. The file cannot be removed unless it is empty. If SIZE is specified, the new size must be larger than the current file size. For example:. Do not specify the operating-system file name.
For more information, see Move Database Files. FILENAME can be modified online; however, the change does not take effect until after the container is physically relocated and the server is shutdown and then restarted. The name must be unique within the database and comply with the rules for identifiers. The name can be a character or Unicode constant, a regular identifier, or a delimited identifier. The file must reside on the server on which SQL Server is installed.
Data files should not be put on compressed file systems unless the files are read-only secondary files, or if the database is read-only. Log files should never be put on compressed file systems. Only one file can be put on each raw partition. The path up to the last folder must exist, and the last folder must not exist. For more information on memory-optimized filegroups, see The Memory Optimized Filegroup. When size is not supplied for the primary file, the SQL Server uses the size of the primary file in the model database.
When a secondary data file or log file is specified but size is not specified for the file, the Database Engine makes the file 1 MB. The default is MB.
Specify a whole number and do not include a decimal. To specify a fraction of a megabyte, convert the value to kilobytes by multiplying the number by For example, specify KB instead of 1. During the recent Comprehensive Database Performance Health Check , we had to restore a database on a server. Let us see how we changed logical database file name in a few quick steps. SQL Server database files have two different names — 1 logical file name and 2 physical file name.
You can see both the names of the files for your database when you run the following command. Now let us see a simple script which can change the logical file name. Please make sure that you select the appropriate database context for your script when you want to change the logical name.
Once you run the above script, you can once again run the command to check the logical filename and you will find the name of the file is not changed. Step 1: First we will create a database named "Manvendra" with three data files 1 primary and 2 secondary data files in one filegroup and one log file by running the below T-SQL code. You can change the name of database, file path, file names, size and file growth according to your needs.
Step 2: Now we will check the physical database file names by running the below T-SQL code to validate the database creation. You can check this information using SQL Server Management Studio by launching the database properties window as shown in the below screenshot. Our next step is to rename the physical database file names. If you try to rename these files while your database is online, you will get the below error.
If there are any critical transactions running then it's recommended to let them complete first then go ahead with this step. Check and validate the database status before moving ahead with renaming of the physical files.
Once you do that you will see info like the image below. The picture below shows we have renamed all associated database files and added the suffix "Renamed" to easily identify the files. Step 5: Once the physical database files have been renamed, the next step is to update the system catalog where the older file name is present.
Once the above command is executed successfully, the database will be online for normal operations. Step 7: The final step of this tip is to validate the logical and physical file name changes which we worked on in this tip. We will run same command which we ran in step 2 to get the physical database file names of the target database. You can see the physical database file names have been changed for each file of this database.
You can compare these names with the screen shot in step 2. We can also validate this change through Management Studio by launching the Database Property window of the database. Choose the "Files" tab on the left side pane of this window as shown in the below screenshot. After an infurating day, this was the one blessing. Thank you. This does not show up as it did in R2.
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