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What happens to tempdb when SQL server restarts?
The behavior described in the problem statement is SQL Server’s behavior by design. To elaborate, the tempdb size will reset itself to the last manually configured size when the SQL Server service is restarted. The tempdb database will increase in size due to auto-growth, but this last size is not retained after a SQL Server service restart.
Is there a reason to put tempdb on different disks?
For TempDb page latch contention, there is absolutely no reason to put the tempdb files on different disks or on SSD. Latch contention is entirely in memory. There is no IO involved. >What would be the blackout plan for splitting the tempdb into multiple files?
Can you have more than one log file in tempdb?
Tempdb installs with just one data file and one log file by default. This part of our SQL Server sp_Blitz script checks to see if you’ve increased that number for tempdb data files. (One log file is just fine.)
What kind of operations can be done in tempdb?
Query operations like joins and aggregations happen there. Online index rebuilds and INSTEAD OF triggers are also done in tempdb. Table spools and ORDER BY too. (It’s a busy place — you get the idea.) Tempdb installs with just one data file and one log file by default.
How big can a tempdb file be after restart?
After restart the tempdb file has defaulted to the size it was last modified to. In this case you need to shrink the tempdb data files. Attachments: Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.
Can you change the recovery mode of tempdb?
You cannot change the RECOVERY mode of TempDb. It will always be SIMPLE. TempDb is always ONLINE, you cannot make it OFFLINE. TempDb will always works on MULTI_USER mode. TempDb does not support ENCRYPTION. TempDb will not allow deleting primary data file or logging file.
Is it possible to create a table in tempdb?
You can create tables in TempDb like you do in other databases and it does perform faster in TempDb because most of the internal operation doesn’t generate log in TempDb as rollback is not required. The real issue with TempDb is missing “D” from ACID property which indicates
How big is the transaction log in tempdb?
My initial tempdb configuration is two data files with 8 MB each and the transaction log file is 8 MB. This tempdb configuration is the result after an installation of SQL Server 2016. This configuration is treated as the last configured size unless the tempdb size is manually altered from SSMS or a T-SQL command.
How is the size of the tempdb reset?
The space is clearly accounted for when looking at the free space on C:\\ (which is why I’m worried!). The tempdb size is reset to the last configured size (that is, to the default size, or the last size that was set by using alter database) after each restart.
Is it safe to shrink tempdb database in SQL Server?
In SQL Server 2005 and later versions, shrinking the tempdb database is no different than shrinking a user database except for the fact that tempdb resets to its configured size after each restart of the instance of SQL Server. It is safe to run shrink in tempdb while tempdb activity is ongoing.